Merge tag 'drm-intel-fixes-2024-12-25' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes

- Fix C10 pll programming sequence [cx0_phy] (Suraj Kandpal)
- Fix power gate sequence. [dg1] (Rodrigo Vivi)

Signed-off-by: Dave Airlie <[email protected]>
From: Tvrtko Ursulin <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/Z2wKf7tmElKFdnoP@linux

Author: airlied

drivers/gpu/drm/i915/display/intel_cx0_phy.c

@@ -2115,14 +2115,6 @@ static void intel_c10_pll_program(struct intel_display *display,
 		      0, C10_VDR_CTRL_MSGBUS_ACCESS,
 		      MB_WRITE_COMMITTED);
 
-	/* Custom width needs to be programmed to 0 for both the phy lanes */
-	intel_cx0_rmw(encoder, INTEL_CX0_BOTH_LANES, PHY_C10_VDR_CUSTOM_WIDTH,
-		      C10_VDR_CUSTOM_WIDTH_MASK, C10_VDR_CUSTOM_WIDTH_8_10,
-		      MB_WRITE_COMMITTED);
-	intel_cx0_rmw(encoder, INTEL_CX0_BOTH_LANES, PHY_C10_VDR_CONTROL(1),
-		      0, C10_VDR_CTRL_UPDATE_CFG,
-		      MB_WRITE_COMMITTED);
-
 	/* Program the pll values only for the master lane */
 	for (i = 0; i < ARRAY_SIZE(pll_state->pll); i++)
 		intel_cx0_write(encoder, INTEL_CX0_LANE0, PHY_C10_VDR_PLL(i),
@@ -2132,6 +2124,10 @@ static void intel_c10_pll_program(struct intel_display *display,
 	intel_cx0_write(encoder, INTEL_CX0_LANE0, PHY_C10_VDR_CMN(0), pll_state->cmn, MB_WRITE_COMMITTED);
 	intel_cx0_write(encoder, INTEL_CX0_LANE0, PHY_C10_VDR_TX(0), pll_state->tx, MB_WRITE_COMMITTED);
 
+	/* Custom width needs to be programmed to 0 for both the phy lanes */
+	intel_cx0_rmw(encoder, INTEL_CX0_BOTH_LANES, PHY_C10_VDR_CUSTOM_WIDTH,
+		      C10_VDR_CUSTOM_WIDTH_MASK, C10_VDR_CUSTOM_WIDTH_8_10,
+		      MB_WRITE_COMMITTED);
 	intel_cx0_rmw(encoder, INTEL_CX0_LANE0, PHY_C10_VDR_CONTROL(1),
 		      0, C10_VDR_CTRL_MASTER_LANE | C10_VDR_CTRL_UPDATE_CFG,
 		      MB_WRITE_COMMITTED);

drivers/gpu/drm/i915/gt/intel_rc6.c

@@ -133,7 +133,7 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
 			GEN9_MEDIA_PG_ENABLE |
 			GEN11_MEDIA_SAMPLER_PG_ENABLE;
 
-	if (GRAPHICS_VER(gt->i915) >= 12) {
+	if (GRAPHICS_VER(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) |