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MBeli.1
Visitor II
March 30, 2022
Question

STM32MP157AAC3T DSI drm driver not probed

  • March 30, 2022
  • 1 reply
  • 933 views

I have custom board based on STM32MP157AAC3T CPU. I'm building image using yocto and board boots fine. Compared to devkit I'm using other panel .I've added driver + dts changes but I figured out that DSI drm driver is not probed. I checked dts on running system (status = "okay") also driver is compiled to kernel:

zcat /proc/config.gz | grep DRM_STM

CONFIG_DRM_STM=y

CONFIG_DRM_STM_DSI=y

I've enabled drm debug and see only other driver loaded:

[  2.010826] [drm:drm_core_init] Initialized

[  3.337453] [drm:stm_drm_platform_probe] stm_drm_platform_probe

[  3.337794] [drm:stm_drm_platform_probe] drv_load

[  3.337931] [drm:ltdc_load] 

[  3.773021] [drm:stm_drm_platform_probe] stm_drm_platform_probe

[  3.773259] [drm:stm_drm_platform_probe] drv_load

[  3.773415] [drm:ltdc_load] 

[  4.038804] [drm:stm_drm_platform_probe] stm_drm_platform_probe

[  4.039058] [drm:stm_drm_platform_probe] drv_load

[  4.039192] [drm:ltdc_load] 

Any ideas what can be cause of that? Many thanks for ideas.

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    1 reply

    M
    MBeli.1Author
    Visitor II
    April 8, 2022

    It was no issue just driver is not printing anything in console in case it it probed properly.

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