arm64: dts: rockchip: Enable HDMI receiver on rock-5b

The Rock 5B has a Micro HDMI port, which can be used for receiving
HDMI data. This enables support for it.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>

arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts

@@ -220,6 +220,18 @@ hdmi0_out_con: endpoint {
 	};
 };
 
+&hdmi_receiver_cma {
+	status = "okay";
+};
+
+&hdmi_receiver {
+	status = "okay";
+	hpd-gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>;
+	pinctrl-0 = <&hdmim1_rx_cec &hdmim1_rx_hpdin &hdmim1_rx_scl &hdmim1_rx_sda &hdmirx_hpd>;
+	pinctrl-names = "default";
+	memory-region = <&hdmi_receiver_cma>;
+};
+
 &hdptxphy_hdmi0 {
 	status = "okay";
 };
@@ -377,6 +389,12 @@ &pcie3x4 {
 };
 
 &pinctrl {
+	hdmirx {
+		hdmirx_hpd: hdmirx-5v-detection {
+			rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	hym8563 {
 		hym8563_int: hym8563-int {
 			rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;