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drm/amd/display: Send DTBCLK disable message on first commit

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BugLink: https://bugs.launchpad.net/bugs/2065400

[ Upstream commit f341055b10bd8be55c3c995dff5f770b236b8ca9 ]

[Why]
Previous patch to allow DTBCLK disable didn't address boot case. Driver
thinks DTBCLK is disabled by default, so we don't send disable message to
PMFW. DTBCLK is then enabled at idle desktop on boot, burning power.

[How]
Set dtbclk_en to true on boot so that disable message is sent during first
commit.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Taimur Hassan <syed.hassan@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Taimur Hassan
2024-01-16 18:10:54 -05:00
committed by Stefan Bader
parent 5cc8e14faf
commit e1657d9960
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
+1
View File
@@ -415,6 +415,7 @@ void dcn35_init_clocks(struct clk_mgr *clk_mgr)
memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks));
// Assumption is that boot state always supports pstate
clk_mgr->clks.dtbclk_en = true;
clk_mgr->clks.ref_dtbclk_khz = ref_dtbclk; // restore ref_dtbclk
clk_mgr->clks.p_state_change_support = true;
clk_mgr->clks.prev_p_state_change_support = true;