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drm/amd/display: Clear water mark change request bit before programing.

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Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yongqiang Sun 2017-08-03 15:46:10 -04:00 committed by Alex Deucher
parent 3e9ad6164b
commit cbb4d72e29
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
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@ -320,6 +320,9 @@ static void program_watermarks(
*/
uint32_t prog_wm_value;
REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
/* Repeat for water mark set A, B, C and D. */
/* clock state A */
prog_wm_value = convert_and_clamp(watermarks->a.urgent_ns,
@ -518,8 +521,7 @@ static void program_watermarks(
REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,