From: Ville Syrjälä Date: Wed, 10 Jul 2019 12:58:51 +0000 (+0300) Subject: drm/i915: Don't overestimate 4:2:0 link symbol clock X-Git-Tag: v5.4-rc1~106^2~19^2~135 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ddb3d12afa92beb67027e84bbc994b0868446022;p=linux.git drm/i915: Don't overestimate 4:2:0 link symbol clock With 4:2:0 output the LS clock can be half of what it is with 4:4:4. Make that happen. Cc: Gwan-gyeong Mun Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20190710125851.3275-1-ville.syrjala@linux.intel.com Reviewed-by: Gwan-gyeong Mun Tested-by: Gwan-gyeong Mun --- diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index a9db16de2999..24592d985bcb 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1854,8 +1854,10 @@ intel_dp_compute_link_config_wide(struct intel_dp *intel_dp, int mode_rate, link_clock, link_avail; for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) { + int output_bpp = intel_dp_output_bpp(pipe_config, bpp); + mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, - bpp); + output_bpp); for (clock = limits->min_clock; clock <= limits->max_clock; clock++) { for (lane_count = limits->min_lane_count;