drm/komeda - At init write GCU control block to handle already on DPU

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If something has already set up the DPU before the komeda driver comes
up, it will fail to init because it was just writing to the SRST bit in
the GCU control register and ignoring others. This resulted in TBU
bringup stalling and init failing. By writing completely we also  set the
mode back to 0 (inactive) too and thus TBU bringup works.

Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220606114714.175499-2-carsten.haitzler@foss.arm.com

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Carsten Haitzler 2022-06-06 12:47:13 +01:00 • committed by Liviu Dudau

parent 000a2f0498

commit a8ff2cd916

1 changed files with 1 additions and 2 deletions

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drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c

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