[Intel-gfx] [PATCH 10/36] drm/i915: program the FDI RX TUSIZE register on hsw_fdi_link_train

[Paulo Zanoni]

From: Paulo Zanoni <paulo.r.zanoni at intel.com>

According to the mode set sequence documentation, this is the right
place. According to the FDI_RX_TUSIZE register description, this is
the value we should set.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 0cb6441..5d33f62 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -196,6 +196,9 @@ void hsw_fdi_link_train(struct drm_crtc *crtc)
 
 		udelay(600);
 
+		/* Program PCH FDI Receiver TU */
+		I915_WRITE(_FDI_RXA_TUSIZE1, 0x7E000000);
+
 		/* Enable PCH FDI Receiver with auto-training */
 		rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
 		I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
-- 
1.7.11.4