[PATCH 14/33] drm/amd/display: Allow PHY state update between same states

brichang Brian.Chang at amd.com
Fri Aug 26 22:50:34 UTC 2022


From: Taimur Hassan <Syed.Hassan at amd.com>

[Why & How]
In some cases, there are calls to transition from TX_ON to TX_ON, such as
when using MST or during resolution change. This is expected, so allow HW
programming to continue.

Reviewed-by: Alvin Lee <Alvin.Lee2 at amd.com>
Acked-by: Brian Chang <Brian.Chang at amd.com>
Signed-off-by: Taimur Hassan <Syed.Hassan at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index b7556111ee44..63648e2056a0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -1224,9 +1224,6 @@ void dcn32_update_phy_state(struct dc_state *state, struct pipe_ctx *pipe_ctx,
 {
 	enum phy_state current_state = pipe_ctx->stream->link->phy_state;
 
-	if (current_state == target_state)
-		return;
-
 	if (target_state == TX_OFF_SYMCLK_OFF) {
 		core_link_disable_stream(pipe_ctx);
 		pipe_ctx->stream->link->phy_state = TX_OFF_SYMCLK_OFF;
-- 
2.25.1



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