[PATCH v2 03/13] arm64: dts: rockchip: Add frl-enable-gpios to rk3576-nanopi-r76s

[Cristian Ciocaltea]

The board exposes the GPIO4_C6 pin to control the voltage bias on the
HDMI data lines.  It must be asserted when operating in HDMI 2.1 FRL
mode and deasserted for HDMI 1.4/2.0 TMDS mode.

Wire up the hdmi node to its dedicated GPIO via frl-enable-gpios to
allow adjusting the bias when transitioning between TMDS and FRL modes.

Additionally, drop the now unnecessary workaround of using vcc5v_hdmi_tx
as hdmi-pwr-supply solely to drive the GPIO into its default state.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
index 7ec27b05ff10..0a5cd5f6fd33 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
@@ -70,7 +70,6 @@ led-2 {
 
 	hdmi-con {
 		compatible = "hdmi-connector";
-		hdmi-pwr-supply = <&vcc5v_hdmi_tx>;
 		type = "a";
 
 		port {
@@ -109,18 +108,6 @@ vcc5v_dcin: regulator-vcc5v-dcin {
 		regulator-name = "vcc5v_dcin";
 	};
 
-	vcc5v_hdmi_tx: regulator-vcc5v-hdmi-tx {
-		compatible = "regulator-fixed";
-		enable-active-high;
-		gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>;
-		pinctrl-names = "default";
-		pinctrl-0 = <&hdmi_tx_on_h>;
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-		regulator-name = "vcc5v_hdmi_tx";
-		vin-supply = <&vcc5v0_sys_s5>;
-	};
-
 	vcc5v0_device_s0: regulator-vcc5v0-device-s0 {
 		compatible = "regulator-fixed";
 		regulator-always-on;
@@ -252,6 +239,9 @@ &gpu {
 };
 
 &hdmi {
+	frl-enable-gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_LOW>;
+	pinctrl-0 = <&hdmi_txm0_pins &hdmi_tx_scl &hdmi_tx_sda &hdmi_tx_on_h>;
+	pinctrl-names = "default";
 	status = "okay";
 };
 

-- 
2.53.0