On Mon, Dec 23, 2019 at 12:59:55PM -0800, Lucas De Marchi wrote:
> On Fri, Dec 20, 2019 at 10:11:15PM +0000, Chris Wilson wrote:
> >Quoting Lucas De Marchi (2019-12-20 22:06:50)
> >> According to intel_detect_preproduction_hw(), the SKL steeping D0 is
> >> still pre-preproduction so we can nuke the additional workaround.
> >>
> >> While at it, nuke dangling new line.
> >>
> >> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> >
> >Ville and Jani are more likely to know if the pre-production comment is
> >telling porkies.
>
> Bspec 7534 says "The DDIA port presence strap is not connected on the SKL A-C steppings."
>
> I would expect to catch a failure in CI if the spec was wrong. I can add
> the bspec # to the commit message while fixing up the typos there.
IIRC the w/a db has this listed as "forever". So not really sure what
the truth is on this one. But easy enough to revert if it doesn't work
out I supoose. Maybe toss in a note about the w/a db thing into the
commit message?
>
>
> Lucas De Marchi
>
> >-Chris
> >
> >> ---
> >> drivers/gpu/drm/i915/display/intel_display.c | 9 +--------
> >> 1 file changed, 1 insertion(+), 8 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> >> index e6702b9b9117..4aa7dfa88c7c 100644
> >> --- a/drivers/gpu/drm/i915/display/intel_display.c
> >> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> >> @@ -16018,14 +16018,8 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
> >> if (intel_ddi_crt_present(dev_priv))
> >> intel_crt_init(dev_priv);
> >>
> >> - /*
> >> - * Haswell uses DDI functions to detect digital outputs.
> >> - * On SKL pre-D0 the strap isn't connected, so we assume
> >> - * it's there.
> >> - */
> >> found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
> >> - /* WaIgnoreDDIAStrap: skl */
> >> - if (found || IS_GEN9_BC(dev_priv))
> >> + if (found)
> >> intel_ddi_init(dev_priv, PORT_A);
> >>
> >> /* DDI B, C, D, and F detection is indicated by the SFUSE_STRAP
> >> @@ -16046,7 +16040,6 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
> >> if (IS_GEN9_BC(dev_priv) &&
> >> intel_bios_is_port_present(dev_priv, PORT_E))
> >> intel_ddi_init(dev_priv, PORT_E);
> >> -
> >> } else if (HAS_PCH_SPLIT(dev_priv)) {
> >> int found;
> >>
> >> --
> >> 2.24.0
> >>
--
Ville Syrjälä
Intel
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