Hi all
i have CM3 in original carrier board and another CM3 in my custom carrier board , both of them have same flash image and i did not install any thing on it just flash it and see dmesg , i access to it over OTG USB , the CM3 in original IO board , have cpu temperature between 32-36c which really good , the CM3 which have same image in my custom boards is the CPU temp reaching to 52-56c
I note some thing ,
in original board io ,
root@radxa-cm3-io:~# dmesg | grep "pvtm-volt-sel"
[ 8.756014] cpu cpu0: pvtm-volt-sel=0
[ 8.876817] rockchip,bus bus-npu: pvtm-volt-sel=0
[ 8.921567] mpp_rkvenc fdf40000.rkvenc: pvtm-volt-sel=0
[ 8.924069] mpp_rkvdec2 fdf80200.rkvdec: pvtm-volt-sel=0
[ 8.925968] rockchip-dmc dmc: pvtm-volt-sel=0
[ 8.938642] RKNPU fde40000.npu: pvtm-volt-sel=0
[ 11.897094] mali fde60000.gpu: pvtm-volt-sel=0
root@radxa-cm3-io:~#
And my custom board
root@radxa-cm3-io:~# dmesg | grep "pvtm-volt-sel"
[ 9.584493] cpu cpu0: pvtm-volt-sel=1
[ 9.705817] rockchip,bus bus-npu: pvtm-volt-sel=1
[ 9.768289] mpp_rkvenc fdf40000.rkvenc: pvtm-volt-sel=1
[ 9.770588] mpp_rkvdec2 fdf80200.rkvdec: pvtm-volt-sel=1
[ 9.772480] rockchip-dmc dmc: pvtm-volt-sel=1
[ 9.783495] RKNPU fde40000.npu: pvtm-volt-sel=1
[ 16.516357] mali fde60000.gpu: pvtm-volt-sel=1
root@radxa-cm3-io:~#
Why in my custom board the PVTM set to 1 ?? !!
any help will highly apricated as this issue stop my project , i upload schematic for carrier board and dmesg for both originalcm3.zip (321.5 KB) carrier board and custom one … dmesgdmesg.zip (43.5 KB)