[Intel-gfx] [PATCH v2 2/2] drm/i915/skl: Increase PCODE CDCLK change notify timeout

[Imre Deak]

commit 848496e5902833600f7992f4faa82dc1546051ba
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Wed Jul 13 16:32:03 2016 +0300

    drm/i915: Wait up to 3ms for the pcu to ack the cdclk change request on SKL

increased the timeout to match the spec, but we still see a timeout on
at least one SKL. A CDCLK change request following the failed one will
succeed nevertheless, so let's try to increase the timeout to 10ms.

v2:
- Use 1ms poll period instead of 10us. (Chris)

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=97929
Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5d11002..f07b611 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6261,7 +6261,7 @@ static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
 
 static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
 {
-	return _wait_for(skl_cdclk_pcu_ready(dev_priv), 3000, 10) == 0;
+	return wait_for(skl_cdclk_pcu_ready(dev_priv), 10) == 0;
 }
 
 static void skl_set_cdclk(struct drm_i915_private *dev_priv, int cdclk, int vco)
-- 
2.5.0