[Intel-gfx] [PATCH] drm/i915/dg1: Fix power gate sequence.

[Rodrigo Vivi]

sub-pipe PG is not present on DG1. Setting these bits can disable
other power gates and cause GPU hangs on video playbacks.

Fixes: 85a12d7eb8fe ("drm/i915/tgl: Fix Media power gate sequence.")
Cc: Dale B Stimson <dale.b.stimson at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_rc6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index d7b8e4457fc2..79f63cdd8bfb 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -110,7 +110,7 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
 		GEN9_MEDIA_PG_ENABLE |
 		GEN11_MEDIA_SAMPLER_PG_ENABLE;
 
-	if (INTEL_GEN(gt->i915) >= 12) {
+	if (INTEL_GEN(gt->i915) >= 12 && !IS_DG1(gt->i915)) {
 		for (i = 0; i < I915_MAX_VCS; i++)
 			if (HAS_ENGINE(gt, _VCS(i)))
 				pg_enable |= (VDN_HCP_POWERGATE_ENABLE(i) |
-- 
2.29.2