diff options
| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2018-11-13 02:23:11 +0300 |
|---|---|---|
| committer | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2018-11-14 03:31:10 +0300 |
| commit | af4de6adb4999513fd41753ad6b35b67a90c3905 (patch) | |
| tree | cf0ebb0260e609f99820f51975325bf254abee02 /drivers | |
| parent | c1cd5b24d6cebfbfe5aca7e989ed98d773a696ed (diff) | |
| download | linux-af4de6adb4999513fd41753ad6b35b67a90c3905.tar.xz | |
drm/i915/cnp+: update to the new RAWCLK_FREQ recommendations
BSpec was updated and now there's no more "subtract 1" to the
Microsecond Counter Divider field.
It seems this should help fixing some GMBUS issues. I'm not aware of
any specific open bug that could be solved by this patch.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181112232313.26373-1-paulo.r.zanoni@intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_cdclk.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c index 8d74276029e6..810670976e86 100644 --- a/drivers/gpu/drm/i915/intel_cdclk.c +++ b/drivers/gpu/drm/i915/intel_cdclk.c @@ -2660,7 +2660,7 @@ static int cnp_rawclk(struct drm_i915_private *dev_priv) fraction = 200; } - rawclk = CNP_RAWCLK_DIV((divider / 1000) - 1); + rawclk = CNP_RAWCLK_DIV(divider / 1000); if (fraction) rawclk |= CNP_RAWCLK_FRAC(DIV_ROUND_CLOSEST(1000, fraction) - 1); @@ -2676,12 +2676,12 @@ static int icp_rawclk(struct drm_i915_private *dev_priv) if (I915_READ(SFUSE_STRAP) & SFUSE_STRAP_RAW_FREQUENCY) { frequency = 24000; - divider = 23; + divider = 24; numerator = 0; denominator = 0; } else { frequency = 19200; - divider = 18; + divider = 19; numerator = 1; denominator = 4; } |