[PATCH 24/40] arm64: dts: rockchip: Add frl-enable-gpios to rk3588-orangepi-5-ultra

[Cristian Ciocaltea]

The board exposes the GPIO4_B2 line to control the voltage bias on the
HDMI1 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 HDMI1 node to the GPIO line using the frl-enable-gpios
property to allow adjusting the bias when transitioning between TMDS and
FRL operating modes.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
 arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-ultra.dts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-ultra.dts b/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-ultra.dts
index f8c6c080e418..8a3040ad7450 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-ultra.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-ultra.dts
@@ -27,7 +27,8 @@ hdmi1_con_in: endpoint {
 &hdmi1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&hdmim0_tx1_cec &hdmim0_tx1_hpd
-			     &hdmim1_tx1_scl &hdmim1_tx1_sda>;
+			     &hdmim1_tx1_scl &hdmim1_tx1_sda &hdmi1_frl_en>;
+	frl-enable-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
 
@@ -64,6 +65,12 @@ &led_green_pwm {
 };
 
 &pinctrl {
+	hdmi {
+		hdmi1_frl_en: hdmi1-frl-en {
+			rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	usb {
 		usb_otg_pwren: usb-otg-pwren {
 			rockchip,pins = <4 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;

-- 
2.53.0