From 760e1477260a1c83503f93c1fa3e94df81ba474d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 11 May 2016 22:44:46 +0300 Subject: [PATCH] drm/i915: Remove 10% cdclk guardband on BXT MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We don't need any pixel clock vs. cdclk guardband since HSW. BXT still tries to add one though. Get rid of it. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1462995892-32416-8-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak --- drivers/gpu/drm/i915/intel_display.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index d837bc4a7e39..fcfd68b2590b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5901,16 +5901,15 @@ static int broxton_calc_cdclk(int max_pixclk) { /* * FIXME: - * - remove the guardband, it's not needed on BXT * - set 19.2MHz bypass frequency if there are no active pipes */ - if (max_pixclk > 576000*9/10) + if (max_pixclk > 576000) return 624000; - else if (max_pixclk > 384000*9/10) + else if (max_pixclk > 384000) return 576000; - else if (max_pixclk > 288000*9/10) + else if (max_pixclk > 288000) return 384000; - else if (max_pixclk > 144000*9/10) + else if (max_pixclk > 144000) return 288000; else return 144000; -- 2.20.1