arm64: dts: apple: t60xx: j[34]75: Add dp-altmode hacks

DP alt mode for Mac Studio, the blessed port is the back left middle port
(second closest USB-C port to the power connector).

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

Author: jannau

arch/arm64/boot/dts/apple/t6001-j375c.dts

@@ -9,6 +9,8 @@
 
 /dts-v1/;
 
+#define ENABLE_DCPEXT_TYPEC
+
 #include "t6001.dtsi"
 #include "t600x-j375.dtsi"
 

arch/arm64/boot/dts/apple/t6002-j375d.dts

@@ -9,6 +9,8 @@
 
 /dts-v1/;
 
+#define ENABLE_DCPEXT_TYPEC
+
 #include "t6002.dtsi"
 #include "t600x-j375.dtsi"
 

arch/arm64/boot/dts/apple/t600x-j375.dtsi

@@ -23,6 +23,9 @@
 		disp0 = &display;
 		disp0_piodma = &disp0_piodma;
 		#endif
+#ifdef ENABLE_DCPEXT_TYPEC
+		dcpext1 = &dcpext1;
+#endif
 		ethernet0 = &ethernet0;
 		serial0 = &serial0;
 		sio = &sio;
@@ -111,6 +114,11 @@
 			power-role = "dual";
 			data-role = "dual";
 
+#ifdef ENABLE_DCPEXT_TYPEC
+			/* hacks */
+			displayport = <&dcpext1>;
+#endif
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
@@ -195,6 +203,45 @@
 	};
 };
 
+#ifdef ENABLE_DCPEXT_TYPEC
+&display {
+	iommus = <&disp0_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
+
 /* USB controllers */
 &dwc3_0 {
 	ports {

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

@@ -9,6 +9,8 @@
 
 /dts-v1/;
 
+#define ENABLE_DCPEXT_TYPEC
+
 #include "t6021.dtsi"
 #include "t602x-j474-j475.dtsi"
 
@@ -81,7 +83,11 @@
 	status = "disabled";
 };
 &display {
+#ifdef ENABLE_DCPEXT_TYPEC
+	iommus = <&dispext0_dart 0>, <&dispext1_dart 0>;
+#else
 	iommus = <&dispext0_dart 0>;
+#endif
 };
 &dispext0_dart {
 	status = "okay";

arch/arm64/boot/dts/apple/t6022-j475d.dts

@@ -9,6 +9,8 @@
 
 /dts-v1/;
 
+#define ENABLE_DCPEXT_TYPEC
+
 #define NO_DCP
 
 #include "t6022.dtsi"

arch/arm64/boot/dts/apple/t6022-jxxxd.dtsi

@@ -22,7 +22,11 @@
 };
 
 &display {
+#ifdef ENABLE_DCPEXT_TYPEC
+	iommus = <&dispext0_dart_die1 0>, <&dispext1_dart 0>;
+#else
 	iommus = <&dispext0_dart_die1 0>;
+#endif
 };
 
 &dispext0_dart_die1 {