From d74cf324e2b64349a49d0f17e9f6764f8a7d8349 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 4acf518626cdad5bbf7aac9869bd4accbbfb4ad3 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 612b4105b758..a3e715b4290d 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; -- 2.20.1