What am I missing that is resulting in "firmware:scmi not ready"

[CErik.2]

Hello!

I upgraded Linux kernel from 5.4 to 5.15 (ST linux-5.15-stm32mp-r2). Simply added new options to kernel config and kept mostly the same DT. I get the error below in the boot log which renders the whole system unusable.

Based on the boot log below what would you think I am missing? If it is impossible to know without a .config and/or DT I will try to add those.

[   3.254882] platform 50000000.rcc: Linked as a consumer to firmware:scmi

[   3.261800] rcc@50000000 Dropping the fwnode link to scmi

[   3.267423] bus: 'platform': __driver_probe_device: matched device 50000000.rcc with driver stm32mp1_rcc

[   3.277231] platform 50000000.rcc: error -EPROBE_DEFER: supplier firmware:scmi not ready

[   3.285613] platform 50000000.rcc: Added to deferred list

[   3.291297] device: '50001000.pwr': device_add

Thanks in advance!

[Olivier GALLIEN · Accepted solution]

Hi @Community member​ ,

Moving from 5.4 to 5.15 means for DV2.x to DV4.x which is a major step.

You can't do it without also get the corresponding BSP ( TF-A, U-Boot, OP-TEE) versions.

TF-A v2.6-stm32mp-r2

U-Boot v2021.10-stm32mp-r2

OP-TEE 3.16.0-stm32mp-r2

See release note :

STM32 MPU ecosystem release note - v4.1.0 - stm32mpu

SCMI is one of the major change putting dependencies between kernel and BSP :

SCMI overview - stm32mpu

Olivier

[CErik.2]

Thank you for your quick response! From your answer I realize that I have some reading to do.