This is a note to let you know that I've just added the patch titled
drm/amd/display: Remove hw w/a toggle if on DP2/HPO
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-remove-hw-w-a-toggle-if-on-dp2-hpo.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4b0e7a7713864a6096ee1d19bb7133757fe7a820
Author: Ausef Yousof <Ausef.Yousof@xxxxxxx>
Date: Thu Oct 24 14:06:39 2024 -0400
drm/amd/display: Remove hw w/a toggle if on DP2/HPO
[ Upstream commit b4c804628485af2b46f0d24a87190735cac37d61 ]
[why&how]
Applying a hw w/a only relevant to DIG FIFO causing corruption
using HPO, do not apply the w/a if on DP2/HPO
Reviewed-by: Charlene Liu <charlene.liu@xxxxxxx>
Signed-off-by: Ausef Yousof <Ausef.Yousof@xxxxxxx>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 7d68006137a97..3bd0d46c17010 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
@@ -132,6 +132,8 @@ static void dcn35_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *
for (i = 0; i < dc->res_pool->pipe_count; ++i) {
struct pipe_ctx *old_pipe = &dc->current_state->res_ctx.pipe_ctx[i];
struct pipe_ctx *new_pipe = &context->res_ctx.pipe_ctx[i];
+ struct clk_mgr_internal *clk_mgr_internal = TO_CLK_MGR_INTERNAL(clk_mgr_base);
+ struct dccg *dccg = clk_mgr_internal->dccg;
struct pipe_ctx *pipe = safe_to_lower
? &context->res_ctx.pipe_ctx[i]
: &dc->current_state->res_ctx.pipe_ctx[i];
@@ -148,8 +150,13 @@ static void dcn35_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *
new_pipe->stream_res.stream_enc &&
new_pipe->stream_res.stream_enc->funcs->is_fifo_enabled &&
new_pipe->stream_res.stream_enc->funcs->is_fifo_enabled(new_pipe->stream_res.stream_enc);
- if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal) ||
- !pipe->stream->link_enc) && !stream_changed_otg_dig_on) {
+ bool has_active_hpo = dccg->ctx->dc->link_srv->dp_is_128b_132b_signal(old_pipe) && dccg->ctx->dc->link_srv->dp_is_128b_132b_signal(new_pipe);
+
+ if (!has_active_hpo && !dccg->ctx->dc->link_srv->dp_is_128b_132b_signal(pipe) &&
+ (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal) ||
+ !pipe->stream->link_enc) && !stream_changed_otg_dig_on)) {
+
+
/* This w/a should not trigger when we have a dig active */
if (disable) {
if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
