6.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Taimur Hassan syed.hassan@amd.com
[ 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 --- drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c index 9cbab880c6233..f07629694ec5e 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c @@ -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;