drm/amd/display: Poll for GPUVM context ready (v2)

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[Why]
Hardware docs state that we must wait until the GPUVM context is ready
after programming it.

[How]
Poll until the valid bit of PAGE_TABLE_BASE_ADDR_LO32 is set to 1 after
programming it.

v2: fix include for udelay (Alex)

Signed-off-by: Julian Parkin <julian.parkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Julian Parkin 2019-06-13 12:49:37 -04:00 • committed by Alex Deucher

parent dd5d9348da

commit ca6f188cdf

1 changed files with 37 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c

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