arm64: dts: apple: t6020-j474,t6021-j475: Enable dcp/dptx-phy/dp2hdmi

After all parts are in place enable the DCP on the M2 Pro Mac Mini and
the M2 Max Mac Studio for HDMI output.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

arch/arm64/boot/dts/apple/t6020-j474s.dts

@@ -45,6 +45,51 @@
 	model = "Mac mini J474";
 };
 
+&lpdptxphy {
+	status = "okay";
+};
+
+#define USE_DCPEXT0 0
+
+#if USE_DCPEXT0
+/ {
+	aliases {
+		dcpext0 = &dcpext0;
+	};
+};
+&dcp {
+	status = "disabled";
+};
+&display {
+	iommus = <&dispext0_dart 0>;
+};
+&dispext0_dart {
+	status = "okay";
+};
+&dcpext0_dart {
+	status = "okay";
+};
+&dcpext0_mbox {
+	status = "okay";
+};
+&dcpext0 {
+#else
+&dcp {
+#endif
+	status = "okay";
+	apple,connector-type = "HDMI-A";
+
+	/*  HDMI HPD gpio, used as interrupt*/
+	hdmi-hpd-gpios = <&pinctrl_aop 25 GPIO_ACTIVE_HIGH>;
+
+	hdmi-pwren-gpios = <&smc_gpio 23 GPIO_ACTIVE_HIGH>;
+	dp2hdmi-pwren-gpios = <&smc_gpio 25 GPIO_ACTIVE_HIGH>;
+
+	phys = <&lpdptxphy>;
+	phy-names = "dp-phy";
+	apple,dptx-phy = <4>;
+};
+
 &gpu {
 	/* Apple does not do this, but they probably should */
 	apple,perf-base-pstate = <3>;

arch/arm64/boot/dts/apple/t6021-j475c.dts

@@ -48,6 +48,25 @@
 	model = "Mac Studio J475";
 };
 
+&lpdptxphy {
+	status = "okay";
+};
+
+&dcp {
+	status = "okay";
+	apple,connector-type = "HDMI-A";
+
+	/*  HDMI HPD gpio, used as interrupt*/
+	hdmi-hpd-gpios = <&pinctrl_aop 25 GPIO_ACTIVE_HIGH>;
+
+	hdmi-pwren-gpios = <&smc_gpio 23 GPIO_ACTIVE_HIGH>;
+	dp2hdmi-pwren-gpios = <&smc_gpio 25 GPIO_ACTIVE_HIGH>;
+
+	phys = <&lpdptxphy>;
+	phy-names = "dp-phy";
+	apple,dptx-phy = <4>;
+};
+
 &gpu {
 	apple,idleoff-standby-timer = <3000>;
 	apple,perf-base-pstate = <5>;

arch/arm64/boot/dts/apple/t602x-j474-j475.dtsi

@@ -21,11 +21,6 @@
 	power-domains = <&ps_disp0_cpu0>, <&ps_dptx_phy_ps>;
 };
 
-/* disable dcp until it is supported */
-&dcp {
-	status = "disabled";
-};
-
 &hpm0 {
 	interrupts = <44 IRQ_TYPE_LEVEL_LOW>;
 };