ROCK 5B Debug Party Invitation

#436

You might get more power savings by CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y (spent a lot of time on this half a decade ago when still contributing to Armbian, ofc the distro then needs to switch back to schedutil or ondemand in a later stage e.g. by configuring cpufrequtils or some radxa-tune-hardware service).

Speaking of schedutil vs. ondemand and I/O performance the choice is rather obvious: https://github.com/radxa/kernel/commit/55f540ce97a3d19330abea8a0afc0052ab2644ef#commitcomment-79484235

I/O performance sucks without either performance or ondemand combined with io_is_busy (and to be honest: Radxaā€™s (lack of) feedback sucks too).

My older script code rotting unmaintained in some Armbian service wonā€™t do it any more (and they wonā€™t change anything about it since not giving a sh*t about low-level optimisations).

Yeah, but once you send out review samples IMHO you shouldā€™ve fixed the performance issues. Both.

Currently the only other RK3588(S) vendor affected by trashed memory performance is Firefly. All the others have not discovered/enabled the dmc device-tree node so far.

#437

@willy, @tkaiser, @icecream95

The following experiment was performed to test the effect of the ā€œperformanceā€ governor in GPU and npu with the latest radxa kernel settings (ondemand without tkaiserā€™s tweaks) :

the board is idle (no GPU and npu activities):

root@rock5b:/sys# cat ./devices/platform/fdab0000.npu/devfreq/fdab0000.npu/available_frequencies
300000000 400000000 500000000 600000000 700000000 800000000 900000000 1000000000
root@rock5b:/sys# cat ./devices/platform/fdab0000.npu/devfreq/fdab0000.npu/cur_freq
1000000000
root@rock5b:/sys# cat ./devices/platform/fb000000.gpu/devfreq/fb000000.gpu/available_frequencies
1000000000 900000000 800000000 700000000 600000000 500000000 400000000 300000000
root@rock5b:/sys# cat ./devices/platform/fb000000.gpu/devfreq/fb000000.gpu/cur_freq
300000000
cat ./devices/platform/fb000000.gpu/devfreq/fb000000.gpu/governor 
simple_ondemand

Running kmscube, glmark2-es-drm and the sdl2-cam (camera + npu +sdl) did not change cur_freq for gpu and npu.

Next:

root@rock5b:/home/rock# cat /sys/devices/platform/fb000000.gpu/devfreq/fb000000.gpu/governor 
simple_ondemand
root@rock5b:/home/rock# cat /sys/devices/platform/fb000000.gpu/devfreq/fb000000.gpu/cur_freq 
300000000
root@rock5b:/home/rock# echo performance > /sys/devices/platform/fb000000.gpu/devfreq/fb000000.gpu/governor 
root@rock5b:/home/rock# cat /sys/devices/platform/fb000000.gpu/devfreq/fb000000.gpu/cur_freq 
1000000000
root@rock5b:/home/rock# cat /sys/devices/platform/fdab0000.npu/devfreq/fdab0000.npu/governor 
userspace
root@rock5b:/home/rock# echo performance > /sys/devices/platform/fdab0000.npu/devfreq/fdab0000.npu/governor 
root@rock5b:/home/rock# cat /sys/devices/platform/fdab0000.npu/devfreq/fdab0000.npu/governor 
performance
root@rock5b:/home/rock# cat /sys/devices/platform/fdab0000.npu/devfreq/fdab0000.npu/cur_freq 
1000000000

Got a ~10% boost with sdl2-cam demo and i have the feeling that npu became much more responsive.
glmark2-es-drm and testgles2 are capped at 60 fps and kmscube does not report fps. What would be the best way to measure gpu with a possible gain?

I will test with ā€œperformanceā€ governor and see what i get.

Applied:

echo 1 > /sys/devices/system/cpu/cpu4/cpufreq/ondemand/io_is_busy
echo 25 > /sys/devices/system/cpu/cpu4/cpufreq/ondemand/up_threshold
echo 10 > /sys/devices/system/cpu/cpu4/cpufreq/ondemand/sampling_down_factor
echo 200000 > /sys/devices/system/cpu/cpu4/cpufreq/ondemand/sampling_rate
echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/io_is_busy
echo 25 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
echo 10 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_down_factor
echo 200000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate

Got ~20% boost overall.
From 15 FPS to 18 FPS, again, that depends on object being detected, before i had 20 fps peaks, now 24 fps. I think the bottleneck is on opencv.

fps
fps.jpg1920Ɨ1221 1.19 MB

performance governor:

cat /sys/devices/system/cpu/cpu?/cpufreq/scaling_governor
performance
performance
performance
performance
performance
performance
performance
performance

24 fps:

24fps
24fps.jpg1920Ɨ864 823 KB

1 Like
#438

Please keep in mind that weā€™ve 3 cpufreq policies on RK3588: 0, 4 and 6. And please also keep in mind that cpufreq is just one piece of the puzzle if the task is bottlenecked by CPU cores (maybe opencv). The scheduler and maybe also IRQ processing is another piece.

So I would suggest to switch to performance for all those tests [1] and then try to pin the CPU relevant stuff to the A76 cores either by prefixing calls with taskset -c 4-7 or using cgroups.

Also interesting how /proc/interrupts looks like prior and after such tests since if thereā€™s an awful lot of IRQs and those remain on cpu0 this is another area of optimisation.

[1] Not just cpufreq governor but all of them. IMO it makes more sense to optimize for performance now and for powersavings later once max performance is known:

/sys/devices/platform/dmc/devfreq/dmc/governor
/sys/devices/platform/fb000000.gpu/devfreq/fb000000.gpu/governor
/sys/devices/platform/fdab0000.npu/devfreq/fdab0000.npu/governor
/sys/devices/system/cpu/cpufreq/policy0/scaling_governor
/sys/devices/system/cpu/cpufreq/policy4/scaling_governor
/sys/devices/system/cpu/cpufreq/policy6/scaling_governor
#439

BTW: Thereā€™s also debugfs to check frequencies:

root@rock-5b:~# cat /sys/kernel/debug/clk/clk_summary | grep scmi_clk_
 scmi_clk_npu                         0        3        0   200000000          0     0  50000
 scmi_clk_gpu                         0        2        0   200000000          0     0  50000
 scmi_clk_ddr                         0        0        0   528000000          0     0  50000
 scmi_clk_cpub23                      0        0        0   408000000          0     0  50000
 scmi_clk_cpub01                      0        0        0   408000000          0     0  50000
 scmi_clk_dsu                         0        0        0           0          0     0  50000
 scmi_clk_cpul                        0        0        0   408000000          0     0  50000

Now switch DRAM and CPU cores to performance:

root@rock-5b:~# echo performance >/sys/devices/platform/dmc/devfreq/dmc/governor 
root@rock-5b:~# echo performance >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
root@rock-5b:~# echo performance >/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
root@rock-5b:~# echo performance >/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor

And confirm:

root@rock-5b:~# cat /sys/kernel/debug/clk/clk_summary | grep scmi_clk_
 scmi_clk_npu                         0        3        0   200000000          0     0  50000
 scmi_clk_gpu                         0        2        0   200000000          0     0  50000
 scmi_clk_ddr                         0        0        0  2112000000          0     0  50000
 scmi_clk_cpub23                      0        0        0  2400000000          0     0  50000
 scmi_clk_cpub01                      0        0        0  2400000000          0     0  50000
 scmi_clk_dsu                         0        0        0           0          0     0  50000
 scmi_clk_cpul                        0        0        0  1800000000          0     0  50000

For whatever reasons these clocks match the following cpufreq policies:

  • 0-3 --> cpul
  • 4-5 --> cpub01
  • 6-7 --> cpub23

For q&d monitoring while running experiments:

#!/bin/bash
renice 19 $BASHPID >/dev/null 2>&1
i=0
printf "%7s %7s %7s %7s %7s %7s %7s\n" $(sed 's/cpul/cpua/' </sys/kernel/debug/clk/clk_summary | sort | awk -F" " '/scmi_clk_/ {print $1}' | sed -e 's/scmi_clk_//' -e 's/000000//' -e 's/cpub01/cpu4-5/' -e 's/cpub23/cpu6-7/' -e 's/cpua/cpu0-3/' | tr "\n" " " | tr '[:lower:]' '[:upper:]')
while true ; do
	printf "%7s %7s %7s %7s %7s %7s %7s\n" $(sed 's/cpul/cpua/' </sys/kernel/debug/clk/clk_summary | sort | awk -F" " '/scmi_clk_/ {print $5}' | sed -e 's/000000//' | tr "\n" " ")
	sleep 5
	((i++))
	if [ $i -eq 24 ]; then
		i=0
		printf "\n%7s %7s %7s %7s %7s %7s %7s\n" $(sed 's/cpul/cpua/' </sys/kernel/debug/clk/clk_summary | sort | awk -F" " '/scmi_clk_/ {print $1}' | sed -e 's/scmi_clk_//' -e 's/000000//' -e 's/cpub01/cpu4-5/' -e 's/cpub23/cpu6-7/' -e 's/cpua/cpu0-3/' | tr "\n" " " | tr '[:lower:]' '[:upper:]')
	fi
done

Looks like this then:

root@rock-5b:/home/tk# check-rk3588-clocks
 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800     600    1200     528       0     200     200
    600     816    1200     528     396     200     200
    816    1008     408     528       0     200     200
    600     816    1416    1068     594     200     200
^C
#440

From the Cortex-M7 datasheet:

m7-freq
m7-freq.png923Ɨ132 22.7 KB

If it can do a gigahertz even at 28nm, then at 8nm it shouldnā€™t even be a challenge.

Iā€™ve also benchmarked the command-stream interpreter (which is seperate from the MCU), and when using the instructions for loading and storing 64 bytes at a time (similar to AArch32 LDM/STM, but adjusted to work with the 96 available 32-bit registers) it can memcpy at about 310 MB/s. Probably the MCU is faster, but it uses a separate address space so mapping memory is harder.

1 Like
#441

Well, situation with RK3588 and its much more capable memory controller seems to differ :frowning:

Using sbc-benchā€™s -g switch to do consumption measurements with this device: Power monitoring on socket 2 of powerbox-1 (Netio 4KF, FW v3.2.0, XML API v2.4, 233.43V @ 49.98Hz).

Weā€™re talking about ~1740 mW when clocking the LPDDR4 in idle with 528 MHz vs. ~2420 mW when at 2112 MHz. A whopping 680 mW difference at least on my board with 16GB RAM.

All CPU cores and dmc governor set to powersave (only the mW value at the bottom counts since averaged from a few measurements before):

System health while idling for 4 minutes:

Time       big.LITTLE   load %cpu %sys %usr %nice %io %irq   Temp     mW
11:57:45:  408/ 408MHz  0.89   7%   0%   6%   0%   0%   0%  37.9Ā°C     20
11:58:15:  408/ 408MHz  0.54   0%   0%   0%   0%   0%   0%  37.9Ā°C   1740
11:58:45:  408/ 408MHz  0.33   0%   0%   0%   0%   0%   0%  37.0Ā°C   1740
11:59:15:  408/ 408MHz  0.20   0%   0%   0%   0%   0%   0%  37.0Ā°C   1750
11:59:45:  408/ 408MHz  0.12   1%   0%   0%   0%   0%   0%  37.0Ā°C   1740
12:00:15:  408/ 408MHz  0.14   1%   0%   0%   0%   0%   0%  36.1Ā°C   1750
12:00:46:  408/ 408MHz  0.08   0%   0%   0%   0%   0%   0%  37.0Ā°C   1740
12:01:16:  408/ 408MHz  0.05   0%   0%   0%   0%   0%   0%  37.0Ā°C   1740

Now only dmc governor set to performance:

System health while idling for 4 minutes:

Time       big.LITTLE   load %cpu %sys %usr %nice %io %irq   Temp     mW
12:07:21:  408/ 408MHz  1.02  12%   0%  11%   0%   0%   0%  40.7Ā°C     20
12:07:51:  408/ 408MHz  0.62   0%   0%   0%   0%   0%   0%  39.8Ā°C   2550
12:08:21:  408/ 408MHz  0.37   0%   0%   0%   0%   0%   0%  39.8Ā°C   2480
12:08:51:  408/ 408MHz  0.29   0%   0%   0%   0%   0%   0%  39.8Ā°C   2460
12:09:21:  408/ 408MHz  0.17   0%   0%   0%   0%   0%   0%  39.8Ā°C   2450
12:09:51:  408/ 408MHz  0.10   0%   0%   0%   0%   0%   0%  39.8Ā°C   2440
12:10:22:  408/ 408MHz  0.06   0%   0%   0%   0%   0%   0%  39.8Ā°C   2430
12:10:52:  408/ 408MHz  0.18   0%   0%   0%   0%   0%   0%  39.8Ā°C   2420

Quick check with dmc_ondemand results in numbers slightly above powersave:

System health while idling for 4 minutes:

Time       big.LITTLE   load %cpu %sys %usr %nice %io %irq   Temp     mW
12:17:08:  408/ 408MHz  1.03  15%   0%  14%   0%   0%   0%  38.8Ā°C     10
12:17:38:  408/ 408MHz  0.62   0%   0%   0%   0%   0%   0%  37.9Ā°C   1760
12:18:08:  408/ 408MHz  0.38   0%   0%   0%   0%   0%   0%  37.9Ā°C   1800
12:18:38:  408/ 408MHz  0.23   0%   0%   0%   0%   0%   0%  37.9Ā°C   1770
12:19:08:  408/ 408MHz  0.20   0%   0%   0%   0%   0%   0%  37.9Ā°C   1760
12:19:39:  408/ 408MHz  0.12   0%   0%   0%   0%   0%   0%  37.0Ā°C   1760
12:20:09:  408/ 408MHz  0.07   0%   0%   0%   0%   0%   0%  37.0Ā°C   1740
12:20:39:  408/ 408MHz  0.04   0%   0%   0%   0%   0%   0%  37.0Ā°C   1740

Edit: corrected values above from 700mW difference to 680mW. And tried to confirm with another PSU (this time 15W RPi USB-C power brick, before some 24W USB PD charger):

  • powersave / 528 MHz: 35.2Ā°C, idle consumption: 1280mW
  • performance / 2112 MHz: 37.9Ā°C, idle consumption: 1910mW

A 630mW difference this time (the measurements include all losses by PSU and cable between PSU and board and those PSUs might differ in low load situations).

#442

The only thing i did not change was the dmc/governor .
No visible improvement with (maybe 0.5 fps spikes):

Previous:

root@rock5b:/home/rock# cat /sys/kernel/debug/clk/clk_summary | grep scmi_clk_
 scmi_clk_npu                         0        3        0   200000000          0     0  50000
 scmi_clk_gpu                         0        2        0   200000000          0     0  50000
 scmi_clk_ddr                         0        0        0   528000000          0     0  50000
 scmi_clk_cpub23                      0        0        0   408000000          0     0  50000
 scmi_clk_cpub01                      0        0        0   408000000          0     0  50000
 scmi_clk_dsu                         0        0        0           0          0     0  50000
 scmi_clk_cpul                        0        0        0  1416000000          0     0  50000

performance:

echo performance >/sys/devices/platform/dmc/devfreq/dmc/governor 
echo performance >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance >/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
echo performance >/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor

checking again:

root@rock5b:/home/rock# cat /sys/kernel/debug/clk/clk_summary | grep scmi_clk_
 scmi_clk_npu                         0        3        0   200000000          0     0  50000
 scmi_clk_gpu                         0        2        0   200000000          0     0  50000
 scmi_clk_ddr                         0        0        0  2112000000          0     0  50000
 scmi_clk_cpub23                      0        0        0  2256000000          0     0  50000
 scmi_clk_cpub01                      0        0        0  2256000000          0     0  50000
 scmi_clk_dsu                         0        0        0           0          0     0  50000
 scmi_clk_cpul                        0        0        0  1800000000          0     0  50000

and monitoring while running the demo:

root@rock5b:/home/rock# ./mon.sh 
 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800    2256    2256    2112       0     200     200
   1800    2256    2256    2112       0     200     200
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000

 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000

 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000

 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     300    1000
   1800    2256    2256    2112       0     200    1000

Update: forgot gpu and npu (1 fps improvement)

root@rock5b:/home/rock# ./mon.sh 
 CPU0-3  CPU4-5  CPU6-7     DDR     DSU     GPU     NPU
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
   1800    2256    2256    2112       0    1000    1000
#443

So adjusting the cpufreq settings brought the biggest gain. Still interested in SMP/IRQ affinityā€¦ do both interrupts and tasks end up on big cores? Can you please post /proc/interrupts contents after such a test run and check with htop/atop where the tasks run and whether there are CPU bottlenecks present?

#444

This may be a naive question, but what kernel are you using to have access to the dmc governor settings ? I pulled the latest one from yesterday on the radxa github repo and am still not seeing the entry under /sys. Did you change any config ? I would have liked to test here to take measurements as well. The debug/clk entries say Iā€™m at 2112 MHz for the DDR, and idling around 1.6W (mesured at the USB plug).

#445

check:
https://github.com/radxa/kernel/commit/4ce9a743b253c0c344686085213de1c4059b9d59
CONFIG_ARM_ROCKCHIP_DMC_DEVFREQ=y

#446

Thanks! So Iā€™m having the right option:

$ zgrep DMC_DEVFREQ /proc/config.gz 
CONFIG_ARM_ROCKCHIP_DMC_DEVFREQ=y

I checked the DTB and found the matching dmc node:

$ dtc -I dtb -O dts < /boot/dtbs/5.10.66-21-rockchip-gbbe5dbfb385d/rockchip/rk3588-rock-5b.dtb
        dmc {
                compatible = "rockchip,rk3588-dmc";
                interrupts = <0x00 0x49 0x04>;
                interrupt-names = "complete";
                devfreq-events = <0x37>;
                clocks = <0x0e 0x04>;
                clock-names = "dmc_clk";
                operating-points-v2 = <0x38>;
                upthreshold = <0x28>;
                downdifferential = <0x14>;
                system-status-level = <0x01 0x04 0x08 0x08 0x02 0x01 0x10 0x04 0x10000 0x04 0x1000 0x08 0x4000 0x08 0x2000 0x08 0xc00 0x08>;
                auto-freq-en = <0x01>;
                status = "okay";
                center-supply = <0x39>;
                mem-supply = <0x3a>;
                phandle = <0x1d8>;
        };

One possibility could be that Iā€™m running on rock5b-v1.1.dtb instead, as it doesnā€™t have this entry, but Iā€™m seeing regulator-name ā€œvcc3v3_pcie2x1l2ā€ which isnā€™t in that one, so Iā€™m still digging.

Edit: hereā€™s what Iā€™m seeing there:

$ ll /sys/devices/platform/dmc
ls: cannot access '/sys/devices/platform/dmc': No such file or directory
$ sudo find /sys -name '*dmc*
'
/sys/bus/platform/drivers/rockchip-dmc
/sys/firmware/devicetree/base/dmc
/sys/firmware/devicetree/base/__symbols__/dmc
/sys/firmware/devicetree/base/__symbols__/dmc_opp_table
/sys/firmware/devicetree/base/dmc-opp-table

$ ll /sys/bus/platform/drivers/rockchip-dmc
total 0
drwxr-xr-x   2 root root    0 Sep  4 17:58 .
drwxr-xr-x 180 root root    0 Sep  4 17:58 ..
--w-------   1 root root 4096 Sep  4 18:10 bind
--w-------   1 root root 4096 Sep  4 18:10 uevent
--w-------   1 root root 4096 Sep  4 18:10 unbind

But I do see the opp:

$ ll /sys/firmware/devicetree/base/dmc-opp-table
total 0
drwxr-xr-x   6 root root  0 Sep  4 17:58 .
drwxr-xr-x 373 root root  0 Sep  4 17:58 ..
-r--r--r--   1 root root 20 Sep  4 18:12 compatible
-r--r--r--   1 root root 14 Sep  4 18:12 name
-r--r--r--   1 root root  8 Sep  4 18:12 nvmem-cell-names
-r--r--r--   1 root root  4 Sep  4 18:12 nvmem-cells
drwxr-xr-x   2 root root  0 Sep  4 17:58 opp-1068000000
drwxr-xr-x   2 root root  0 Sep  4 17:58 opp-1560000000
drwxr-xr-x   2 root root  0 Sep  4 17:58 opp-2750000000
drwxr-xr-x   2 root root  0 Sep  4 17:58 opp-528000000
-r--r--r--   1 root root  4 Sep  4 18:12 phandle
-r--r--r--   1 root root 48 Sep  4 18:12 rockchip,leakage-voltage-sel
-r--r--r--   1 root root  4 Sep  4 18:12 rockchip,low-temp
-r--r--r--   1 root root  4 Sep  4 18:12 rockchip,low-temp-min-volt
-r--r--r--   1 root root  4 Sep  4 18:12 rockchip,temp-hysteresis
#447

/proc/interrupts and top while running:

top
top.png768Ɨ754 69.9 KB 

CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7       
 13:      30521      13066      10028       9245      11691       8999      13868       2998     GICv3  26 Level     arch_timer
 14:     260790      69239      10867      19868     140050       2317       1490        613     GICv3 321 Level     rk_timer
 15:          0          0          0          0          0          0          0          0     GICv3  23 Level     arm-pmu
 16:         23          0          0          0          0          0          0          0     GICv3 105 Level     dmc
 17:      11253          0          0          0          0          0          0          0     GICv3 126 Level     fb000000.gpu
 18:          1          0          0          0          0          0          0          0     GICv3 125 Level     fb000000.gpu
 19:      25112          0          0          0          0          0          0          0     GICv3 124 Level     fb000000.gpu
 20:        232          0          0          0          0          0          0          0     GICv3 247 Level     ehci_hcd:usb1
 21:          0          0          0          0          0          0          0          0     GICv3 248 Level     ohci_hcd:usb3
 22:       5319          0          0          0          0          0          0          0     GICv3 250 Level     ehci_hcd:usb2
 23:          0          0          0          0          0          0          0          0     GICv3 251 Level     ohci_hcd:usb4
 24:          0          0          0          0          0          0          0          0     GICv3 425 Level     rockchip_usb2phy
 25:          2          0          0          0          0          0          0          0     GICv3 423 Level     rockchip_usb2phy
 26:          2          0          0          0          0          0          0          0     GICv3 424 Level     rockchip_usb2phy
 27:      13858          0          0          0          0          0          0          0     GICv3 349 Level     fd880000.i2c
 28:       8172          0          0          0          0          0          0          0     GICv3 142 Level     fdab9000.iommu, fdab0000.npu
 29:          0          0          0          0          0          0          0          0     GICv3 143 Level     fdab9000.iommu, fdab0000.npu
 30:          0          0          0          0          0          0          0          0     GICv3 144 Level     fdab9000.iommu, fdab0000.npu
 31:          0          0          0          0          0          0          0          0     GICv3 151 Level     fdb50400.vdpu
 32:          0          0          0          0          0          0          0          0     GICv3 150 Level     fdb50800.iommu
 33:       5449          0          0          0          0          0          0          0     GICv3 146 Level     fdb60f00.iommu, rga3_core0
 34:          0          0          0          0          0          0          0          0     GICv3 147 Level     fdb70f00.iommu, rga3_core1
 35:          0          0          0          0          0          0          0          0     GICv3 148 Level     rga2
 36:          0          0          0          0          0          0          0          0     GICv3 161 Level     fdb90000.jpegd
 37:          0          0          0          0          0          0          0          0     GICv3 162 Level     fdb90480.iommu
 38:          0          0          0          0          0          0          0          0     GICv3 154 Level     fdba0000.jpege-core
 39:          0          0          0          0          0          0          0          0     GICv3 153 Level     fdba0800.iommu
 40:          0          0          0          0          0          0          0          0     GICv3 156 Level     fdba4000.jpege-core
 41:          0          0          0          0          0          0          0          0     GICv3 155 Level     fdba4800.iommu
 42:          0          0          0          0          0          0          0          0     GICv3 158 Level     fdba8000.jpege-core
 43:          0          0          0          0          0          0          0          0     GICv3 157 Level     fdba8800.iommu
 44:          0          0          0          0          0          0          0          0     GICv3 160 Level     fdbac000.jpege-core
 45:          0          0          0          0          0          0          0          0     GICv3 159 Level     fdbac800.iommu
 46:          0          0          0          0          0          0          0          0     GICv3 149 Level     fdbb0800.iommu, fdbb0000.iep
 47:          0          0          0          0          0          0          0          0     GICv3 133 Level     fdbd0000.rkvenc-core
 48:          0          0          0          0          0          0          0          0     GICv3 131 Level     fdbdf000.iommu
 49:          0          0          0          0          0          0          0          0     GICv3 132 Level     fdbdf000.iommu
 50:          0          0          0          0          0          0          0          0     GICv3 136 Level     fdbe0000.rkvenc-core
 51:          0          0          0          0          0          0          0          0     GICv3 134 Level     fdbef000.iommu
 52:          0          0          0          0          0          0          0          0     GICv3 135 Level     fdbef000.iommu
 53:          0          0          0          0          0          0          0          0     GICv3 127 Level     fdc38100.rkvdec-core
 54:          0          0          0          0          0          0          0          0     GICv3 128 Level     fdc38700.iommu
 55:          0          0          0          0          0          0          0          0     GICv3 129 Level     fdc48100.rkvdec-core
 56:          0          0          0          0          0          0          0          0     GICv3 130 Level     fdc48700.iommu
 57:       8199          0          0          0          0          0          0          0     GICv3 163 Level     rkisp_hw
 58:       4102          0          0          0          0          0          0          0     GICv3 165 Level     rkisp_hw
 59:          0          0          0          0          0          0          0          0     GICv3 166 Level     rkisp_hw
 60:          0          0          0          0          0          0          0          0     GICv3 164 Level     fdcb7f00.iommu
 61:          2          0          0          0          0          0          0          0     GICv3 187 Level     rkcifhw
 62:          0          0          0          0          0          0          0          0     GICv3 145 Level     fdce0800.iommu
 63:          0          0          0          0          0          0          0          0     GICv3 179 Level     rockchip-mipi-csi2
 64:          0          0          0          0          0          0          0          0     GICv3 180 Level     rockchip-mipi-csi2
 65:       9667          0          0          0          0          0          0          0     GICv3 188 Level     fdd97e00.iommu, fdd90000.vop
 67:          0          0          0          0          0          0          0          0     GICv3 201 Level     fde80000.hdmi
 68:          0          0          0          0          0          0          0          0     GICv3 202 Level     dw-hdmi-qp-cec
 69:          0          0          0          0          0          0          0          0     GICv3 203 Level     fde80000.hdmi
 70:        771          0          0          0          0          0          0          0     GICv3 204 Level     fde80000.hdmi
 71:          1          0          0          0          0          0          0          0     GICv3 392 Level     dw-hdmi-qp-hpd
 72:          0          0          0          0          0          0          0          0     GICv3 285 Level     pcie-sys
 77:      14515          0          0          0          0          0          0          0     GICv3 235 Level     dw-mci
 78:          8          0          0          0          0          0          0          0     GICv3 237 Level     mmc1
 81:         10          0          0          0          0          0          0          0     GICv3 118 Level     fea10000.dma-controller
 82:          0          0          0          0          0          0          0          0     GICv3 119 Level     fea10000.dma-controller
 83:          0          0          0          0          0          0          0          0     GICv3 120 Level     fea30000.dma-controller
 84:          0          0          0          0          0          0          0          0     GICv3 121 Level     fea30000.dma-controller
 85:         73          0          0          0          0          0          0          0     GICv3 350 Level     fea90000.i2c
 86:        759          0          0          0          0          0          0          0     GICv3 352 Level     feab0000.i2c
 87:        195          0          0          0          0          0          0          0     GICv3 353 Level     feac0000.i2c
 88:      19920          0          0          0          0          0          0          0     GICv3 360 Level     feb20000.spi
 89:          0          0          0          0          0          0          0          0     GICv3 429 Level     rockchip_thermal
 90:          0          0          0          0          0          0          0          0     GICv3 430 Level     fec10000.saradc
 91:        128          0          0          0          0          0          0          0     GICv3 355 Level     fec80000.i2c
 92:        442          0          0          0          0          0          0          0     GICv3 356 Level     fec90000.i2c
 93:         10          0          0          0          0          0          0          0     GICv3 122 Level     fed10000.dma-controller
 94:          0          0          0          0          0          0          0          0     GICv3 123 Level     fed10000.dma-controller
100:          0          0          0          0          0          0          0          0     GICv3 426 Level     rockchip_usb2phy
103:          0          0          0          0          0          0          0          0     GICv3 205 Level     fdea0000.hdmi
104:          0          0          0          0          0          0          0          0     GICv3 206 Level     dw-hdmi-qp-cec
105:          0          0          0          0          0          0          0          0     GICv3 207 Level     fdea0000.hdmi
106:       1799          0          0          0          0          0          0          0     GICv3 208 Level     fdea0000.hdmi
107:          1          0          0          0          0          0          0          0     GICv3 393 Level     dw-hdmi-qp-hpd
108:          0          0          0          0          0          0          0          0     GICv3 209 Level     rk_hdmirx_cec
109:          0          0          0          0          2          0          0          0     GICv3 468 Level     rk_hdmirx-hdmi
110:          0          0          0          0          0          0          0          0     GICv3 211 Level     rk_hdmirx-dma
121:          0          0          0          0          0          0          0          0     GICv3 455 Edge      debug-signal
122:          0          0          0          0          0          0          0          0     GICv3 365 Level     debug
123:          0          0          0          0          0          0          0          0     GICv3 140 Level     av1d-master
124:          0          0          0          0          0          0          0          0     GICv3 139 Level     irq_cache
126:          0          0          0          0          0          0          0          0  rockchip_gpio_irq   7 Level     rk806
127:          0          0          0          0          0          0          0          0     rk806   0 Edge      rk805_pwrkey_fall
128:          0          0          0          0          0          0          0          0     rk806   1 Edge      rk805_pwrkey_rise
129:          0          0          0          0          0          0          0          0     rk806   7 Level     rk806_vb_low
131:          0          0          0          0          0          0          0          0     GICv3 254 Level     xhci-hcd:usb5
132:          0          0          0          0          0          0          0          0     GICv3 253 Level     xhci-hcd:usb7
133:          8          0          0          0          0          0          0          0  rockchip_gpio_irq  12 Level     fsc_interrupt_int_n
134:          0          0          0          0          0          0          0          0  rockchip_gpio_irq   8 Level     hym8563
135:          0          0          0          0          0          0          0          0  rockchip_gpio_irq  22 Edge      rk_hdmirx-5v
136:          0          0          0          0          0          0          0          0  rockchip_gpio_irq  29 Level     headset_input
146:          0          0          0          0          0          0          0          0   ITS-MSI 570425352 Edge      PCIe PME
147:          0       8489          0          0          0          0          0          0   ITS-MSI 570949632 Edge      enP4p65s0-0
148:          0          0          0          0          0          0          0          0   ITS-MSI 570949633 Edge      enP4p65s0-1
149:          0          0          0          0          0          0          0          0   ITS-MSI 570949634 Edge      enP4p65s0-2
150:          0          0          0          0          0          0          0          0   ITS-MSI 570949635 Edge      enP4p65s0-3
151:          0          0          0          0          0          0          0          0   ITS-MSI 570949636 Edge      enP4p65s0-4
152:          0          0          0          0          0          0          0          0   ITS-MSI 570949637 Edge      enP4p65s0-5
153:          0          0          0          0          0          0          0          0   ITS-MSI 570949638 Edge      enP4p65s0-6
154:          0          0          0          0          0          0          0          0   ITS-MSI 570949639 Edge      enP4p65s0-7
155:          0          0          0          0          0          0          0          0   ITS-MSI 570949640 Edge      enP4p65s0-8
156:          0          0          0          0          0          0          0          0   ITS-MSI 570949641 Edge      enP4p65s0-9
157:          0          0          0          0          0          0          0          0   ITS-MSI 570949642 Edge      enP4p65s0-10
158:          0          0          0          0          0          0          0          0   ITS-MSI 570949643 Edge      enP4p65s0-11
159:          0          0          0          0          0          0          0          0   ITS-MSI 570949644 Edge      enP4p65s0-12
160:          0          0          0          0          0          0          0          0   ITS-MSI 570949645 Edge      enP4p65s0-13
161:          0          0          0          0          0          0          0          0   ITS-MSI 570949646 Edge      enP4p65s0-14
162:          0          0          0          0          0          0          0          0   ITS-MSI 570949647 Edge      enP4p65s0-15
163:          0       5204          0          0          0          0          0          0   ITS-MSI 570949648 Edge      enP4p65s0-16
164:          0          0          0          0          0          0          0          0   ITS-MSI 570949649 Edge      enP4p65s0-17
165:          0          0          0       2816          0          0          0          0   ITS-MSI 570949650 Edge      enP4p65s0-18
166:          0          0          0          0          0          0          0          0   ITS-MSI 570949651 Edge      enP4p65s0-19
167:          0          0          0          0          0          0          0          0   ITS-MSI 570949652 Edge      enP4p65s0-20
168:          0          0          0          0          0          0          1          0   ITS-MSI 570949653 Edge      enP4p65s0-21
169:          0          0          0          0          0          0          0          0   ITS-MSI 570949654 Edge      enP4p65s0-22
170:          0          0          0          0          0          0          0          0   ITS-MSI 570949655 Edge      enP4p65s0-23
171:          0          0          0          0          0          0          0          0   ITS-MSI 570949656 Edge      enP4p65s0-24
172:          0          0          0          0          0          0          0          0   ITS-MSI 570949657 Edge      enP4p65s0-25
173:          0          0          0          0          0          0          0          0   ITS-MSI 570949658 Edge      enP4p65s0-26
174:          0          0          0          0          0          0          0          0   ITS-MSI 570949659 Edge      enP4p65s0-27
175:          0          0          0          0          0          0          0          0   ITS-MSI 570949660 Edge      enP4p65s0-28
176:          0          0          0          0          0          0          0          0   ITS-MSI 570949661 Edge      enP4p65s0-29
177:          0          0          0          0          0          0          0          0   ITS-MSI 570949662 Edge      enP4p65s0-30
178:          0          0          0          0          0          0          0          0   ITS-MSI 570949663 Edge      enP4p65s0-31
IPI0:     23874      32924      35537      30001       3000       3622        848       1528       Rescheduling interrupts
IPI1:     67590       9725       6223       7860      27526      17384      24073      22052       Function call interrupts
IPI2:         0          0          0          0          0          0          0          0       CPU stop interrupts
IPI3:         0          0          0          0          0          0          0          0       CPU stop (for crash dump) interrupts
IPI4:     14154      22057      11678      10418       8117       2917       4299       1336       Timer broadcast interrupts
IPI5:    237063      18620       6360       2514     183085       1552       2639        737       IRQ work interrupts
IPI6:         0          0          0          0          0          0          0          0       CPU wake-up interrupts
Err:          0
#448

after:

CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7       
 13:      30735      13200      10154       9328      12100       9302      13892       3034     GICv3  26 Level     arch_timer
 14:     260990      69552      10913      19904     140050       2317       1490        613     GICv3 321 Level     rk_timer
 15:          0          0          0          0          0          0          0          0     GICv3  23 Level     arm-pmu
 16:         23          0          0          0          0          0          0          0     GICv3 105 Level     dmc
 17:      11398          0          0          0          0          0          0          0     GICv3 126 Level     fb000000.gpu
 18:          1          0          0          0          0          0          0          0     GICv3 125 Level     fb000000.gpu
 19:      25453          0          0          0          0          0          0          0     GICv3 124 Level     fb000000.gpu
 20:        234          0          0          0          0          0          0          0     GICv3 247 Level     ehci_hcd:usb1
 21:          0          0          0          0          0          0          0          0     GICv3 248 Level     ohci_hcd:usb3
 22:       5319          0          0          0          0          0          0          0     GICv3 250 Level     ehci_hcd:usb2
 23:          0          0          0          0          0          0          0          0     GICv3 251 Level     ohci_hcd:usb4
 24:          0          0          0          0          0          0          0          0     GICv3 425 Level     rockchip_usb2phy
 25:          2          0          0          0          0          0          0          0     GICv3 423 Level     rockchip_usb2phy
 26:          2          0          0          0          0          0          0          0     GICv3 424 Level     rockchip_usb2phy
 27:      13858          0          0          0          0          0          0          0     GICv3 349 Level     fd880000.i2c
 28:       8337          0          0          0          0          0          0          0     GICv3 142 Level     fdab9000.iommu, fdab0000.npu
 29:          0          0          0          0          0          0          0          0     GICv3 143 Level     fdab9000.iommu, fdab0000.npu
 30:          0          0          0          0          0          0          0          0     GICv3 144 Level     fdab9000.iommu, fdab0000.npu
 31:          0          0          0          0          0          0          0          0     GICv3 151 Level     fdb50400.vdpu
 32:          0          0          0          0          0          0          0          0     GICv3 150 Level     fdb50800.iommu
 33:       5558          0          0          0          0          0          0          0     GICv3 146 Level     fdb60f00.iommu, rga3_core0
 34:          0          0          0          0          0          0          0          0     GICv3 147 Level     fdb70f00.iommu, rga3_core1
 35:          0          0          0          0          0          0          0          0     GICv3 148 Level     rga2
 36:          0          0          0          0          0          0          0          0     GICv3 161 Level     fdb90000.jpegd
 37:          0          0          0          0          0          0          0          0     GICv3 162 Level     fdb90480.iommu
 38:          0          0          0          0          0          0          0          0     GICv3 154 Level     fdba0000.jpege-core
 39:          0          0          0          0          0          0          0          0     GICv3 153 Level     fdba0800.iommu
 40:          0          0          0          0          0          0          0          0     GICv3 156 Level     fdba4000.jpege-core
 41:          0          0          0          0          0          0          0          0     GICv3 155 Level     fdba4800.iommu
 42:          0          0          0          0          0          0          0          0     GICv3 158 Level     fdba8000.jpege-core
 43:          0          0          0          0          0          0          0          0     GICv3 157 Level     fdba8800.iommu
 44:          0          0          0          0          0          0          0          0     GICv3 160 Level     fdbac000.jpege-core
 45:          0          0          0          0          0          0          0          0     GICv3 159 Level     fdbac800.iommu
 46:          0          0          0          0          0          0          0          0     GICv3 149 Level     fdbb0800.iommu, fdbb0000.iep
 47:          0          0          0          0          0          0          0          0     GICv3 133 Level     fdbd0000.rkvenc-core
 48:          0          0          0          0          0          0          0          0     GICv3 131 Level     fdbdf000.iommu
 49:          0          0          0          0          0          0          0          0     GICv3 132 Level     fdbdf000.iommu
 50:          0          0          0          0          0          0          0          0     GICv3 136 Level     fdbe0000.rkvenc-core
 51:          0          0          0          0          0          0          0          0     GICv3 134 Level     fdbef000.iommu
 52:          0          0          0          0          0          0          0          0     GICv3 135 Level     fdbef000.iommu
 53:          0          0          0          0          0          0          0          0     GICv3 127 Level     fdc38100.rkvdec-core
 54:          0          0          0          0          0          0          0          0     GICv3 128 Level     fdc38700.iommu
 55:          0          0          0          0          0          0          0          0     GICv3 129 Level     fdc48100.rkvdec-core
 56:          0          0          0          0          0          0          0          0     GICv3 130 Level     fdc48700.iommu
 57:       8332          0          0          0          0          0          0          0     GICv3 163 Level     rkisp_hw
 58:       4169          0          0          0          0          0          0          0     GICv3 165 Level     rkisp_hw
 59:          0          0          0          0          0          0          0          0     GICv3 166 Level     rkisp_hw
 60:          0          0          0          0          0          0          0          0     GICv3 164 Level     fdcb7f00.iommu
 61:          3          0          0          0          0          0          0          0     GICv3 187 Level     rkcifhw
 62:          0          0          0          0          0          0          0          0     GICv3 145 Level     fdce0800.iommu
 63:          0          0          0          0          0          0          0          0     GICv3 179 Level     rockchip-mipi-csi2
 64:          0          0          0          0          0          0          0          0     GICv3 180 Level     rockchip-mipi-csi2
 65:      10088          0          0          0          0          0          0          0     GICv3 188 Level     fdd97e00.iommu, fdd90000.vop
 67:          0          0          0          0          0          0          0          0     GICv3 201 Level     fde80000.hdmi
 68:          0          0          0          0          0          0          0          0     GICv3 202 Level     dw-hdmi-qp-cec
 69:          0          0          0          0          0          0          0          0     GICv3 203 Level     fde80000.hdmi
 70:        771          0          0          0          0          0          0          0     GICv3 204 Level     fde80000.hdmi
 71:          1          0          0          0          0          0          0          0     GICv3 392 Level     dw-hdmi-qp-hpd
 72:          0          0          0          0          0          0          0          0     GICv3 285 Level     pcie-sys
 77:      14521          0          0          0          0          0          0          0     GICv3 235 Level     dw-mci
 78:          8          0          0          0          0          0          0          0     GICv3 237 Level     mmc1
 81:         10          0          0          0          0          0          0          0     GICv3 118 Level     fea10000.dma-controller
 82:          0          0          0          0          0          0          0          0     GICv3 119 Level     fea10000.dma-controller
 83:          0          0          0          0          0          0          0          0     GICv3 120 Level     fea30000.dma-controller
 84:          0          0          0          0          0          0          0          0     GICv3 121 Level     fea30000.dma-controller
 85:         73          0          0          0          0          0          0          0     GICv3 350 Level     fea90000.i2c
 86:        760          0          0          0          0          0          0          0     GICv3 352 Level     feab0000.i2c
 87:        195          0          0          0          0          0          0          0     GICv3 353 Level     feac0000.i2c
 88:      19923          0          0          0          0          0          0          0     GICv3 360 Level     feb20000.spi
 89:          0          0          0          0          0          0          0          0     GICv3 429 Level     rockchip_thermal
 90:          0          0          0          0          0          0          0          0     GICv3 430 Level     fec10000.saradc
 91:        128          0          0          0          0          0          0          0     GICv3 355 Level     fec80000.i2c
 92:        442          0          0          0          0          0          0          0     GICv3 356 Level     fec90000.i2c
 93:         10          0          0          0          0          0          0          0     GICv3 122 Level     fed10000.dma-controller
 94:          0          0          0          0          0          0          0          0     GICv3 123 Level     fed10000.dma-controller
100:          0          0          0          0          0          0          0          0     GICv3 426 Level     rockchip_usb2phy
103:          0          0          0          0          0          0          0          0     GICv3 205 Level     fdea0000.hdmi
104:          0          0          0          0          0          0          0          0     GICv3 206 Level     dw-hdmi-qp-cec
105:          0          0          0          0          0          0          0          0     GICv3 207 Level     fdea0000.hdmi
106:       1799          0          0          0          0          0          0          0     GICv3 208 Level     fdea0000.hdmi
107:          1          0          0          0          0          0          0          0     GICv3 393 Level     dw-hdmi-qp-hpd
108:          0          0          0          0          0          0          0          0     GICv3 209 Level     rk_hdmirx_cec
109:          0          0          0          0          2          0          0          0     GICv3 468 Level     rk_hdmirx-hdmi
110:          0          0          0          0          0          0          0          0     GICv3 211 Level     rk_hdmirx-dma
121:          0          0          0          0          0          0          0          0     GICv3 455 Edge      debug-signal
122:          0          0          0          0          0          0          0          0     GICv3 365 Level     debug
123:          0          0          0          0          0          0          0          0     GICv3 140 Level     av1d-master
124:          0          0          0          0          0          0          0          0     GICv3 139 Level     irq_cache
126:          0          0          0          0          0          0          0          0  rockchip_gpio_irq   7 Level     rk806
127:          0          0          0          0          0          0          0          0     rk806   0 Edge      rk805_pwrkey_fall
128:          0          0          0          0          0          0          0          0     rk806   1 Edge      rk805_pwrkey_rise
129:          0          0          0          0          0          0          0          0     rk806   7 Level     rk806_vb_low
131:          0          0          0          0          0          0          0          0     GICv3 254 Level     xhci-hcd:usb5
132:          0          0          0          0          0          0          0          0     GICv3 253 Level     xhci-hcd:usb7
133:          8          0          0          0          0          0          0          0  rockchip_gpio_irq  12 Level     fsc_interrupt_int_n
134:          0          0          0          0          0          0          0          0  rockchip_gpio_irq   8 Level     hym8563
135:          0          0          0          0          0          0          0          0  rockchip_gpio_irq  22 Edge      rk_hdmirx-5v
136:          0          0          0          0          0          0          0          0  rockchip_gpio_irq  29 Level     headset_input
146:          0          0          0          0          0          0          0          0   ITS-MSI 570425352 Edge      PCIe PME
147:          0       8518          0          0          0          0          0          0   ITS-MSI 570949632 Edge      enP4p65s0-0
148:          0          0          0          0          0          0          0          0   ITS-MSI 570949633 Edge      enP4p65s0-1
149:          0          0          0          0          0          0          0          0   ITS-MSI 570949634 Edge      enP4p65s0-2
150:          0          0          0          0          0          0          0          0   ITS-MSI 570949635 Edge      enP4p65s0-3
151:          0          0          0          0          0          0          0          0   ITS-MSI 570949636 Edge      enP4p65s0-4
152:          0          0          0          0          0          0          0          0   ITS-MSI 570949637 Edge      enP4p65s0-5
153:          0          0          0          0          0          0          0          0   ITS-MSI 570949638 Edge      enP4p65s0-6
154:          0          0          0          0          0          0          0          0   ITS-MSI 570949639 Edge      enP4p65s0-7
155:          0          0          0          0          0          0          0          0   ITS-MSI 570949640 Edge      enP4p65s0-8
156:          0          0          0          0          0          0          0          0   ITS-MSI 570949641 Edge      enP4p65s0-9
157:          0          0          0          0          0          0          0          0   ITS-MSI 570949642 Edge      enP4p65s0-10
158:          0          0          0          0          0          0          0          0   ITS-MSI 570949643 Edge      enP4p65s0-11
159:          0          0          0          0          0          0          0          0   ITS-MSI 570949644 Edge      enP4p65s0-12
160:          0          0          0          0          0          0          0          0   ITS-MSI 570949645 Edge      enP4p65s0-13
161:          0          0          0          0          0          0          0          0   ITS-MSI 570949646 Edge      enP4p65s0-14
162:          0          0          0          0          0          0          0          0   ITS-MSI 570949647 Edge      enP4p65s0-15
163:          0       5220          0          0          0          0          0          0   ITS-MSI 570949648 Edge      enP4p65s0-16
164:          0          0          0          0          0          0          0          0   ITS-MSI 570949649 Edge      enP4p65s0-17
165:          0          0          0       2821          0          0          0          0   ITS-MSI 570949650 Edge      enP4p65s0-18
166:          0          0          0          0          0          0          0          0   ITS-MSI 570949651 Edge      enP4p65s0-19
167:          0          0          0          0          0          0          0          0   ITS-MSI 570949652 Edge      enP4p65s0-20
168:          0          0          0          0          0          0          1          0   ITS-MSI 570949653 Edge      enP4p65s0-21
169:          0          0          0          0          0          0          0          0   ITS-MSI 570949654 Edge      enP4p65s0-22
170:          0          0          0          0          0          0          0          0   ITS-MSI 570949655 Edge      enP4p65s0-23
171:          0          0          0          0          0          0          0          0   ITS-MSI 570949656 Edge      enP4p65s0-24
172:          0          0          0          0          0          0          0          0   ITS-MSI 570949657 Edge      enP4p65s0-25
173:          0          0          0          0          0          0          0          0   ITS-MSI 570949658 Edge      enP4p65s0-26
174:          0          0          0          0          0          0          0          0   ITS-MSI 570949659 Edge      enP4p65s0-27
175:          0          0          0          0          0          0          0          0   ITS-MSI 570949660 Edge      enP4p65s0-28
176:          0          0          0          0          0          0          0          0   ITS-MSI 570949661 Edge      enP4p65s0-29
177:          0          0          0          0          0          0          0          0   ITS-MSI 570949662 Edge      enP4p65s0-30
178:          0          0          0          0          0          0          0          0   ITS-MSI 570949663 Edge      enP4p65s0-31
IPI0:     23906      33229      35910      30217       3075       3687        848       1528       Rescheduling interrupts
IPI1:     67788       9815       6365       7950      27906      17672      24079      22236       Function call interrupts
IPI2:         0          0          0          0          0          0          0          0       CPU stop interrupts
IPI3:         0          0          0          0          0          0          0          0       CPU stop (for crash dump) interrupts
IPI4:     14184      22103      11706      10451       8117       2917       4299       1336       Timer broadcast interrupts
IPI5:    237063      18620       6360       2514     183085       1552       2639        737       IRQ work interrupts
IPI6:         0          0          0          0          0          0          0          0       CPU wake-up interrupts
Err:          0
#449

Update:

I stopped the 3A engine and started again, now i have:

top2
top2.png768Ɨ754 69.3 KB

Running without 3A

top3
top3.png768Ɨ754 68.6 KB

ouch, and missed this:

#450

In this situation it seems one CPU core is maxing out with ksoftirqd while otherwise /proc/interrupts shows no IRQ bottleneck. Would still be interesting to verify with htop and atop whether there are bottlenecks (tasks/interrupts maxing out a little core) when running your tests. Since if thatā€™s the case itā€™s time for IRQ affinity and SMP affinity moving that stuff over to the big cores.

#451

atop
atop.png744Ɨ567 58.6 KB

htop:

htop
htop.png688Ɨ890 133 KB

#452

Finally, i now understand RkRgaBlit (2D engine) only works passing dma bufs.
I was able to capture frames and render them with drm-fb. 1920x1080, 1.3% CPU.

drm-fb
drm-fb.png744Ɨ567 90.6 KB

#453

Anyone wants to try Python on a GPU?

Patched kernel no longer required:

$ ./repl
Use CTRL-D to quit

MicroPython v1.19.1-298-gc616721b1 on 2022-09-08; Mali CSF with Arm Cortex-M7
Type "help()" for more information.
>>> def fib(i):
...     if i <= 2:
...         return 1
...     else:
...         return fib(i - 1) + fib(i - 2)
...
>>> fib(20)
6765

Not much works yet, but soon I should have the environment usable enough to write all of the firmware code in Python. Imagine the fun youā€™ll be able to have once you can mess about with GPU jobs and implement all the wallhacks you want, invisible to software!

(More seriously, it would be nice to have help with writing the firmware code.)

3 Likes
#454

Nice
btw what is the status of panfrost on RK3588 ?
Is it working already?

#455

Itā€™s been working for a whileā€¦ just not well enough that youā€™d actually want to use it.

Iā€™m still trying to fully work out how the command stream interacts with the firmware, so that new GPU jobs can start as soon as the old one finishes, rather than the current implementation which just waits for an amount of time and hopes thatā€™s enough.