[PATCH RESEND v3 3/4] arm64: dts: apple: t8103: Add PWM controller

Sasha Finkelstein
2022-11-21T17:45:35Z

Adds PWM controller and keyboard backlight bindings for M1 MacBooks

Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Acked-by: Sven Peter <sven@svenpeter.dev>
---
arch/arm64/boot/dts/apple/t8103-j293.dts | 20 ++++++++++++++++++++
arch/arm64/boot/dts/apple/t8103-j313.dts | 20 ++++++++++++++++++++
arch/arm64/boot/dts/apple/t8103.dtsi | 9 +++++++++
3 files changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t8103-j293.dts b/arch/arm64/boot/dts/apple/t8103-j293.dts
index ecb10d237a05..0b4b7e8e0726 100644
--- a/arch/arm64/boot/dts/apple/t8103-j293.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j293.dts
@@ -11,6 +11,7 @@

#include "t8103.dtsi"
#include "t8103-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>

/ {
compatible = "apple,j293", "apple,t8103", "apple,arm-platform";
@@ -43,3 +44,22 @@ &i2c2 {
&i2c4 {
status = "okay";
};
+
+/ {
+ led-controller {
+ compatible = "pwm-leds";
+ led-0 {
+ pwms = <&fpwm1 0 40000>;
+ pwm-names = "kbd-backlight";
+ label = "kbd_backlight";
+ function = LED_FUNCTION_KBD_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ max-brightness = <255>;
+ default-state = "keep";
+ };
+ };
+};
+
+&fpwm1 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t8103-j313.dts b/arch/arm64/boot/dts/apple/t8103-j313.dts
index df741737b8e6..0e0f57dee96b 100644
--- a/arch/arm64/boot/dts/apple/t8103-j313.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j313.dts
@@ -11,6 +11,7 @@

#include "t8103.dtsi"
#include "t8103-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>

/ {
compatible = "apple,j313", "apple,t8103", "apple,arm-platform";
@@ -35,3 +36,22 @@ &pcie0_dart_2 {

/delete-node/ &port01;
/delete-node/ &port02;
+
+/ {
+ led-controller {
+ compatible = "pwm-leds";
+ led-0 {
+ pwms = <&fpwm1 0 40000>;
+ pwm-names = "kbd-backlight";
+ label = "kbd_backlight";
+ function = LED_FUNCTION_KBD_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ max-brightness = <255>;
+ default-state = "keep";
+ };
+ };
+};
+
+&fpwm1 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 51a63b29d404..ccdb26ef6b22 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -191,6 +191,15 @@ i2c4: i2c@235020000 {
status = "disabled"; /* only used in J293 */
};

+ fpwm1: pwm@235044000 {
+ compatible = "apple,t8103-fpwm", "apple,s5l-fpwm";
+ reg = <0x2 0x35044000 0x0 0x4000>;
+ power-domains = <&ps_fpwm1>;
+ clocks = <&clkref>;
+ #pwm-cells = <2>;
+ status = "disabled";
+ };
+
serial0: serial@235200000 {
compatible = "apple,s5l-uart";
reg = <0x2 0x35200000 0x0 0x1000>;
--
2.38.1