When updating from arm-trusted-firmware-v2.4-stm32mp-r1 to arm-trusted-firmware-v2.4-stm32mp-r2 I get PANIC on UART

[cfilipescu]

I didn't change anything in the device tree just compiled the arm-trusted-firmware-v2.4-stm32mp-r2 instead of arm-trusted-firmware-v2.4-stm32mp-r1 and I get the following on UART:

PANIC at PC : 0x2ffcfd2b

What is different between the two versions?

[GHers.1]

Hello Bernard,

We are using Dunfell V3.1.

According to the thread above, the patch directs to drivers/regulator/regulator_core.c in project arm-trusted-firmware-v2.4-stm32mp-r1 (or r2).

However, in our project, we have this path: 

./arm-trusted-firmware-2.4/drivers/st/regulator/stm32mp_regulator.c

Is this the right path for the file in the patch?

Please advise.

thanks,

Gil

[Bernard PUEL]

Hello Gil,

the proposed patch is in the core part of the regulator (then not specific to stm32 device) so should be no issue to apply it on your release.

Please see the architecture from wiki V3 documentation: https://wiki.st.com/stm32mpu-ecosystem-v3/wiki/Regulator_overview