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.zanoni@xxxxxxxxx> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Cc: José Roberto de Souza <jose.souza@xxxxxxxxx> Cc: Rodrigo Vivi <rodrigo.vivi@intel.c Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> --- 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 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
