[PATCH RESEND v6 3/4] arm64: dts: apple: Add touchbar digitizer nodes

Sasha Finkelstein via B4 Relay
2025-02-17T11:38:16Z

From: Sasha Finkelstein <fnkl.kernel@gmail.com>

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>
---
arch/arm64/boot/dts/apple/t8103-j293.dts | 27 +++++++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8103.dtsi | 19 +++++++++++++++++++
arch/arm64/boot/dts/apple/t8112-j493.dts | 23 +++++++++++++++++++++++
arch/arm64/boot/dts/apple/t8112.dtsi | 14 ++++++++++++++
4 files changed, 83 insertions(+)

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/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 9b0dad6b618444ac6b1c9735c50cccfc3965f947..dc72aae3844bf33579f623f0b01abc7de4033af4 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -326,6 +326,13 @@ clkref: clock-ref {
clock-output-names = "clkref";
};

+ clk_200m: clock-200m {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <200000000>;
+ clock-output-names = "clk_200m";
+ };
+
/*
* This is a fabulated representation of the input clock
* to NCO since we don't know the true clock tree.
@@ -441,6 +448,18 @@ fpwm1: pwm@235044000 {
status = "disabled";
};

+ spi0: spi@235100000 {
+ compatible = "apple,t8103-spi", "apple,spi";
+ reg = <0x2 0x35100000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 614 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_200m>;
+ power-domains = <&ps_spi0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled"; /* only used in J293 */
+ };
+
serial0: serial@235200000 {
compatible = "apple,s5l-uart";
reg = <0x2 0x35200000 0x0 0x1000>;
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 1666e6ab250bc0be9b8318e3c8fc903ccd3f3760..bb6c9e769c65330a32a3c7aa2f074c1f63e195fd 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -467,6 +467,20 @@ fpwm1: pwm@235044000 {
status = "disabled";
};

+ spi3: spi@23510c000 {
+ compatible = "apple,t8112-spi", "apple,spi";
+ reg = <0x2 0x3510c000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 751 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clkref>;
+ pinctrl-0 = <&spi3_pins>;
+ pinctrl-names = "default";
+ power-domains = <&ps_spi3>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled"; /* only used in J493 */
+ };
+
serial0: serial@235200000 {
compatible = "apple,s5l-uart";
reg = <0x2 0x35200000 0x0 0x1000>;

--
2.48.1