arm64: dts: apple: t60xx: j[34]1[46]: Add dp-altmode hacks

Blessed dp-altmode port is front left port on j314/j316/j414/j416.

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

Author: jannau

arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi

@@ -9,6 +9,8 @@
  * Copyright The Asahi Linux Contributors
  */
 
+#define ENABLE_DCPEXT_TYPEC
+
 #include <dt-bindings/leds/common.h>
 
 / {
@@ -22,6 +24,9 @@
 		bluetooth0 = &bluetooth0;
 		dcp = &dcp;
 		dcpext0 = &dcpext0;
+#ifdef ENABLE_DCPEXT_TYPEC
+		dcpext1 = &dcpext1;
+#endif
 		disp0 = &display;
 		disp0_piodma = &disp0_piodma;
 		serial0 = &serial0;
@@ -186,6 +191,11 @@
 			power-role = "dual";
 			data-role = "dual";
 
+#ifdef ENABLE_DCPEXT_TYPEC
+			/* hacks */
+			displayport = <&dcpext1>;
+#endif
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
@@ -247,6 +257,46 @@
 	};
 };
 
+#ifdef ENABLE_DCPEXT_TYPEC
+
+&display {
+	iommus = <&disp0_dart 0>, <&dispext0_dart 0>, <&dispext1_dart 0>;
+};
+
+&dispext1_dart {
+	status = "okay";
+};
+
+&dcpext1_dart {
+	status = "okay";
+};
+
+&dcpext1_mbox {
+	status = "okay";
+};
+
+&dcpext1 {
+	status = "okay";
+	apple,connector-type = "DP";
+
+	/* hacks */
+	apple,dptx-phy = <1>;
+	phys = <&atcphy1 PHY_TYPE_DP>;
+	phy-names = "dp-phy";
+	mux-controls = <&atcphy1_xbar 0>;
+	mux-control-names = "dp-xbar";
+	mux-index = <2>;
+};
+
+&dpaudio2 {
+	status = "okay";
+};
+
+&atcphy1_xbar {
+        status = "okay";
+};
+#endif
+
 /* Virtual regulator representing the shared shutdown GPIO */
 / {
 	speaker_sdz: fixed-regulator-sn012776-sdz {