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drm/amd/display: Program CW5 for tracebuffer for dcn20

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[Why]
On dcn21 this is programmed for tracebuffer support but isn't being
programmed on dcn20.

DMCUB execution hits an undefined address 65000000 on tracebuffer
access.

[How]
Program CW5.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas 2019-11-07 15:47:46 -05:00 committed by Alex Deucher
parent a494211851
commit c1825b5777
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
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@ -99,6 +99,13 @@ void dmub_dcn20_setup_windows(struct dmub_srv *dmub,
REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0, DMCUB_REGION4_TOP_ADDRESS,
cw4->region.top - cw4->region.base - 1, DMCUB_REGION4_ENABLE,
1);
REG_WRITE(DMCUB_REGION3_CW5_OFFSET, cw5->offset.u.low_part);
REG_WRITE(DMCUB_REGION3_CW5_OFFSET_HIGH, cw5->offset.u.high_part);
REG_WRITE(DMCUB_REGION3_CW5_BASE_ADDRESS, cw5->region.base);
REG_SET_2(DMCUB_REGION3_CW5_TOP_ADDRESS, 0,
DMCUB_REGION3_CW5_TOP_ADDRESS, cw5->region.top,
DMCUB_REGION3_CW5_ENABLE, 1);
}
void dmub_dcn20_setup_mailbox(struct dmub_srv *dmub,