| Message ID | 1350759465-7171-5-git-send-email-daniel.vetter@ffwll.ch (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sat, 20 Oct 2012 20:57:44 +0200 Daniel Vetter <daniel.vetter@ffwll.ch> wrote: > Otherwise dp aux won't work on some hsw platforms, since they use a > different rawclk than the 125MHz clock used thus far. > > To absolutely not change anything, round up: That way we get the old > 63 divider for the default 125MHz clock. > > Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > drivers/gpu/drm/i915/intel_dp.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c > index b35d5bd..971c4e4 100644 > --- a/drivers/gpu/drm/i915/intel_dp.c > +++ b/drivers/gpu/drm/i915/intel_dp.c > @@ -372,7 +372,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, > else > aux_clock_divider = 225; /* eDP input clock at 450Mhz */ > } else if (HAS_PCH_SPLIT(dev)) > - aux_clock_divider = 63; /* IRL input clock fixed at 125Mhz */ > + aux_clock_divider = DIV_ROUND_UP(intel_pch_rawclk(dev), 2); > else > aux_clock_divider = intel_hrawclk(dev) / 2; > Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index b35d5bd..971c4e4 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -372,7 +372,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, else aux_clock_divider = 225; /* eDP input clock at 450Mhz */ } else if (HAS_PCH_SPLIT(dev)) - aux_clock_divider = 63; /* IRL input clock fixed at 125Mhz */ + aux_clock_divider = DIV_ROUND_UP(intel_pch_rawclk(dev), 2); else aux_clock_divider = intel_hrawclk(dev) / 2;
Otherwise dp aux won't work on some hsw platforms, since they use a different rawclk than the 125MHz clock used thus far. To absolutely not change anything, round up: That way we get the old 63 divider for the default 125MHz clock. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/i915/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)