From 25f8760679cf0071cbeb01e73dd7790b068d936f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 26 Oct 2012 10:58:13 +0200 Subject: [PATCH] drm/i915: set FDI_RX_MISC to recommended values on CPT/PPT My machine here has the correct ones already, but better safe than sorry. IBX has different settings for that register, and on IBX the device defaults match the recommended values. Hence I did not add the respective writes for IBX. LPT needs the same settings, but that has been done already commit 8f478fd7ddf7168fd321f622d2c33ea654658460 Author: Eugeni Dodonov Date: Wed Jul 4 20:15:16 2012 -0300 drm/i915: program FDI_RX TP and FDI delays Cc: Paulo Zanoni Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 612b4105b758c..a3e715b4290de 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2479,6 +2479,9 @@ static void gen6_fdi_link_train(struct drm_crtc *crtc) temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B; I915_WRITE(reg, temp | FDI_TX_ENABLE); + I915_WRITE(FDI_RX_MISC(pipe), + FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); + reg = FDI_RX_CTL(pipe); temp = I915_READ(reg); if (HAS_PCH_CPT(dev)) { @@ -2611,6 +2614,9 @@ static void ivb_manual_fdi_link_train(struct drm_crtc *crtc) temp |= FDI_COMPOSITE_SYNC; I915_WRITE(reg, temp | FDI_TX_ENABLE); + I915_WRITE(FDI_RX_MISC(pipe), + FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); + reg = FDI_RX_CTL(pipe); temp = I915_READ(reg); temp &= ~FDI_LINK_TRAIN_AUTO; -- 2.39.5