[Intel-gfx] [PATCH v2 1/2] drm/i915/psr: Implement Wa_14014971492

[Jouni Högander]

Implement Wa_14014971492 and apply it for affected platforms.

Bspec: 52890, 54369, 55378, 66624

v2: Adjust platforms where applied

Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Cc: Mika Kahola <mika.kah...@intel.com>
Cc: José Roberto de Souza <jose.so...@intel.com>
Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c 
b/drivers/gpu/drm/i915/display/intel_psr.c
index 7d4a15a283a0..7a72e15e6836 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1842,6 +1842,12 @@ int intel_psr2_sel_fetch_update(struct 
intel_atomic_state *state,
        if (full_update)
                goto skip_sel_fetch_set_loop;
 
+       /* Wa_14014971492 */
+       if ((IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
+            IS_ALDERLAKE_P(dev_priv) || IS_TIGERLAKE(dev_priv)) &&
+           crtc_state->splitter.enable)
+               pipe_clip.y1 = 0;
+
        ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
        if (ret)
                return ret;
-- 
2.34.1