BSpec says to clear the comp init HW flag too during combo PHY uninit,
so do that. The lack of this could badly interact with the PHY reinit
after a DC6/9 transition at least, where (after a follow-up patch fixing
the init code) we'd skip the initialization incorrectly due to this flag
being set.
BSpec: 21257
Cc: Paulo Zanoni <paulo.r.zan...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: José Roberto de Souza <jose.so...@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.c
Signed-off-by: Imre Deak <imre.d...@intel.com>
---
drivers/gpu/drm/i915/intel_runtime_pm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c
b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 6c453366cd24..a7eea8423580 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -3668,6 +3668,10 @@ void icl_display_core_uninit(struct drm_i915_private
*dev_priv)
val = I915_READ(ICL_PHY_MISC(port));
val |= ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN;
I915_WRITE(ICL_PHY_MISC(port), val);
+
+ val = I915_READ(ICL_PORT_COMP_DW0(port));
+ val &= ~COMP_INIT;
+ I915_WRITE(ICL_PORT_COMP_DW0(port), val);
}
}
--
2.13.2
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