From: Thierry Reding <treding@xxxxxxxxxx>
Commit fb50a116bbbc ("drm/tegra: hdmi - Add connector supply support")
introduced a new supply for HDMI connectors that is used to control the
voltage on the +5V pin. Not all boards have had the corresponding supply
added to their device tree files, causing the following warning message
during boot:
[ 0.859698] 54280000.hdmi supply hdmi not found, using dummy regulator
Add such a regulator to the Seaboard DTS to enable the driver to control
this voltage and get rid of the warning.
Reported-by: Stephen Warren <swarren@xxxxxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
Hi Stephen,
This is completely untested because I don't have a Seaboard. But this is
based on the schematics and I think it should work, so it'd be great if
you could test it.
Thanks,
Thierry
arch/arm/boot/dts/tegra20-seaboard.dts | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts
index e2fed2712249..aea8994b35f2 100644
--- a/arch/arm/boot/dts/tegra20-seaboard.dts
+++ b/arch/arm/boot/dts/tegra20-seaboard.dts
@@ -31,6 +31,7 @@
vdd-supply = <&hdmi_vdd_reg>;
pll-supply = <&hdmi_pll_reg>;
+ hdmi-supply = <&vdd_hdmi>;
nvidia,ddc-i2c-bus = <&hdmi_ddc>;
nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
@@ -893,6 +894,17 @@
gpio = <&gpio TEGRA_GPIO(W, 0) GPIO_ACTIVE_HIGH>;
enable-active-high;
};
+
+ vdd_hdmi: regulator@6 {
+ compatible = "regulator-fixed";
+ reg = <6>;
+ regulator-name = "VDDIO_HDMI";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ gpio = <&gpio TEGRA_GPIO(V, 5) GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ vin-supply = <&vdd_5v0_reg>;
+ };
};
sound {
--
2.3.5
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