I have a problem on the SPI flash of 6 rockpi on 36

#1

Hello,

I have a problem with the SPI flash.
I tested on 36 rockpi 4C, on 30 I had no problem the SPI is flashing (so my procedure is ok), but the 6 others do not work.

Here are my steps:

  • installation of a jumper for the CLK of the spinnaker.
  • usbA OTG connection
  • card ignition (via usb-c)
  • I take off the jumper
  • rk ld> OK spi found ( rkdeveloptool ld DevNo=1 Vid=0x2207,Pid=0x330c,LocationID=1401 Maskrom)
  • bootload rk> OK (sudo rkdeveloptool db /Users/aaa/Desktop/rockpi/spi/out/u-boot/spi/rk3399_loader_spinor_v1.20.126.bin > Downloading bootloader succeeded.)
  • rk wl 0 …> OK (sudo rkdeveloptool wl 0 /Users/aaa/Desktop/rockpi/spi/out/u-boot/spi/uboot-trust-spi.img > Write LBA from file (100%))
  • rk rd> Reset ok (sudo rkdeveloptool rd > Reset Device OK.)

if I leave plugged in I have my uboot which launches on the screen! awesome. but if I cut the power supply to the card and the restart the spinnaker u-boot does not start.

Namely that this same u-boot and loader works very well on the other 30 RockPi 4C

do you have an idea to solve this problem? thank you.

#2

Hi, Rocket

The steps is right. Did you forget to take off the jumper? It’s very important to take it off before writing.

How about accessing SPI flash from Linux /dev/mtd* on the 6 units. Do you see /dev/mtd?

#3

Hello, For the jumper was removed after starting the card 2 to 4 seconds later.

I will burn an emmc to see if I can flash it from linux.

The behavior is still very strange as if the SPI behave like a RAM (remove when the rockpi stops)

tks