On Wed, 7 Aug 2013 09:41:39 +0200
Daniel Vetter <daniel@xxxxxxxx> wrote:
> On Wed, Aug 7, 2013 at 5:10 AM, Matsumura, Ryan
> <ryan.matsumura@xxxxxxxxx> wrote:
> > I have a BayTrail board with two HDMI ports and running the default Tizen 3.0M1 release. The first HDMI shows up just fine but I can't get the second screen to display anything. I tried enabling the second screen through the kernel command line parameters (video=HDMI-1:e video=HDMI-2:e) and running xrandr. This is my output from xrandr -q
>
> Iirc Baytrail still has a bunch of hardcoded ports ... Jesse?
I don't know of any boards with two HDMI ports, but if they're wired up
correctly something like this might work:
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_d
index 468dbc9..81e86af 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9304,8 +9304,13 @@ static void intel_setup_outputs(struct drm_device *dev)
intel_dp_init(dev, PCH_DP_D, PORT_D);
} else if (IS_VALLEYVIEW(dev)) {
/* Check for built-in panel first. Shares lanes with HDMI on SDV
- if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED)
- intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
+ if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED) {
+ intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
+ PORT_C);
+ if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED)
+ intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C,
+ PORT_C);
+ }
if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED) {
intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
--
Jesse Barnes, Intel Open Source Technology Center
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