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Message-Id: <20250225-z2-dts-v1-1-df101a7c17c8@gmail.com>
Date: Tue, 25 Feb 2025 22:19:54 +0100
From: Sasha Finkelstein via B4 Relay <devnull+fnkl.kernel.gmail.com@...nel.org>
To: Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
Alyssa Rosenzweig <alyssa@...enzweig.io>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Janne Grunau <j@...nau.net>, Neal Gompa <neal@...pa.dev>,
Sasha Finkelstein <fnkl.kernel@...il.com>
Subject: [PATCH] arm64: dts: apple: Add touchbar digitizer nodes
From: Sasha Finkelstein <fnkl.kernel@...il.com>
Adds device tree entries for the touchbar digitizer
Co-developed-by: Janne Grunau <j@...nau.net>
Signed-off-by: Janne Grunau <j@...nau.net>
Reviewed-by: Neal Gompa <neal@...pa.dev>
Acked-by: Sven Peter <sven@...npeter.dev>
Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
---
arch/arm64/boot/dts/apple/t8103-j293.dts | 27 +++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8112-j493.dts | 23 +++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8112.dtsi | 2 +-
3 files changed, 51 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/apple/t8103-j293.dts b/arch/arm64/boot/dts/apple/t8103-j293.dts
index 56b0c67bfcda321b60c621de092643017693ff91..0a93d3891c23da8b8c77dce64001caacb69ee140 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 @@ &i2c4 {
&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 0ad908349f55406783942735a2e9dad54cda00ec..045bd0716cb7d20c1379ebc1e3ff7f4d0dddc179 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 @@ &i2c4 {
&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 58d88f1ef92a32061765bd3b569fdae0255dcd7e..271986a7697f7033e96d11fb4ea6a50a467f0f2f 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -499,7 +499,7 @@ spi3: spi@...10c000 {
power-domains = <&ps_spi3>;
#address-cells = <1>;
#size-cells = <0>;
- status = "disabled";
+ status = "disabled"; /* only used in J493 */
};
serial0: serial@...200000 {
---
base-commit: 3febe9de5ca5267618675650871a626d0901f8cb
change-id: 20250225-z2-dts-ea4213de4a22
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