From: Sasha Finkelstein <fnkl.kernel@gmail.com>
Date: Tue, 25 Feb 2025 21:19:54 +0000 (+0100)
Subject: arm64: dts: apple: Add touchbar digitizer nodes
X-Git-Tag: v6.15-rc1~159^2~34^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=44db68dee1f77260d7037319e911e9883a6ffe0e;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: apple: Add touchbar digitizer nodes

Adds device tree entries for the touchbar digitizer

Co-developed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Acked-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Link: https://lore.kernel.org/r/20250225-z2-dts-v1-1-df101a7c17c8@gmail.com
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---

diff --git a/arch/arm64/boot/dts/apple/t8103-j293.dts b/arch/arm64/boot/dts/apple/t8103-j293.dts
index 56b0c67bfcda3..0a93d3891c23d 100644
--- a/arch/arm64/boot/dts/apple/t8103-j293.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j293.dts
@@ -17,6 +17,14 @@
 	compatible = "apple,j293", "apple,t8103", "apple,arm-platform";
 	model = "Apple MacBook Pro (13-inch, M1, 2020)";
 
+	/*
+	 * All of those are used by the bootloader to pass calibration
+	 * blobs and other device-specific properties
+	 */
+	aliases {
+		touchbar0 = &touchbar0;
+	};
+
 	led-controller {
 		compatible = "pwm-leds";
 		led-0 {
@@ -49,3 +57,22 @@
 &fpwm1 {
 	status = "okay";
 };
+
+&spi0 {
+	cs-gpios = <&pinctrl_ap 109 GPIO_ACTIVE_LOW>;
+	status = "okay";
+
+	touchbar0: touchbar@0 {
+		compatible = "apple,j293-touchbar";
+		reg = <0>;
+		spi-max-frequency = <11500000>;
+		spi-cs-setup-delay-ns = <2000>;
+		spi-cs-hold-delay-ns = <2000>;
+		reset-gpios = <&pinctrl_ap 139 GPIO_ACTIVE_LOW>;
+		interrupts-extended = <&pinctrl_ap 194 IRQ_TYPE_EDGE_FALLING>;
+		firmware-name = "apple/dfrmtfw-j293.bin";
+		touchscreen-size-x = <23045>;
+		touchscreen-size-y = <640>;
+		touchscreen-inverted-y;
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/t8112-j493.dts b/arch/arm64/boot/dts/apple/t8112-j493.dts
index 0ad908349f554..045bd0716cb7d 100644
--- a/arch/arm64/boot/dts/apple/t8112-j493.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j493.dts
@@ -17,8 +17,13 @@
 	compatible = "apple,j493", "apple,t8112", "apple,arm-platform";
 	model = "Apple MacBook Pro (13-inch, M2, 2022)";
 
+	/*
+	 * All of those are used by the bootloader to pass calibration
+	 * blobs and other device-specific properties
+	 */
 	aliases {
 		bluetooth0 = &bluetooth0;
+		touchbar0 = &touchbar0;
 		wifi0 = &wifi0;
 	};
 
@@ -67,3 +72,21 @@
 &fpwm1 {
 	status = "okay";
 };
+
+&spi3 {
+	status = "okay";
+
+	touchbar0: touchbar@0 {
+		compatible = "apple,j493-touchbar";
+		reg = <0>;
+		spi-max-frequency = <8000000>;
+		spi-cs-setup-delay-ns = <2000>;
+		spi-cs-hold-delay-ns = <2000>;
+		reset-gpios = <&pinctrl_ap 170 GPIO_ACTIVE_LOW>;
+		interrupts-extended = <&pinctrl_ap 174 IRQ_TYPE_EDGE_FALLING>;
+		firmware-name = "apple/dfrmtfw-j493.bin";
+		touchscreen-size-x = <23045>;
+		touchscreen-size-y = <640>;
+		touchscreen-inverted-y;
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/t8112.dtsi b/arch/arm64/boot/dts/apple/t8112.dtsi
index 58d88f1ef92a3..271986a7697f7 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -499,7 +499,7 @@
 			power-domains = <&ps_spi3>;
 			#address-cells = <1>;
 			#size-cells = <0>;
-			status = "disabled";
+			status = "disabled"; /* only used in J493 */
 		};
 
 		serial0: serial@235200000 {