From af4de6adb4999513fd41753ad6b35b67a90c3905 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Mon, 12 Nov 2018 15:23:11 -0800 Subject: [PATCH] drm/i915/cnp+: update to the new RAWCLK_FREQ recommendations MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Rodrigo Vivi Reviewed-by: Ville Syrjälä Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20181112232313.26373-1-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_cdclk.c | 6 +++--- 1 file 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; } -- 2.17.1