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Message-Id: <20230409-t8112-fpwm-v1-1-feffa5f8b99b@gmail.com>
Date: Sun, 09 Apr 2023 11:18:46 +0200
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+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Sasha Finkelstein <fnkl.kernel@...il.com>
Subject: [PATCH] arm64: dts: apple: t8112: Add PWM controller
From: Sasha Finkelstein <fnkl.kernel@...il.com>
This patch adds the device tree entries for the PWM controller
present on M2 macbooks that is connected to the keyboard backlight.
Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
---
arch/arm64/boot/dts/apple/t8112-j413.dts | 17 +++++++++++++++++
arch/arm64/boot/dts/apple/t8112-j493.dts | 17 +++++++++++++++++
arch/arm64/boot/dts/apple/t8112.dtsi | 9 +++++++++
3 files changed, 43 insertions(+)
diff --git a/arch/arm64/boot/dts/apple/t8112-j413.dts b/arch/arm64/boot/dts/apple/t8112-j413.dts
index 9e758edeaa82..6f69658623bf 100644
--- a/arch/arm64/boot/dts/apple/t8112-j413.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j413.dts
@@ -11,6 +11,7 @@
#include "t8112.dtsi"
#include "t8112-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>
/ {
compatible = "apple,j413", "apple,t8112", "apple,arm-platform";
@@ -20,6 +21,18 @@ aliases {
bluetooth0 = &bluetooth0;
wifi0 = &wifi0;
};
+
+ led-controller {
+ compatible = "pwm-leds";
+ led-0 {
+ pwms = <&fpwm1 0 40000>;
+ label = "kbd_backlight";
+ function = LED_FUNCTION_KBD_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ max-brightness = <255>;
+ default-state = "keep";
+ };
+ };
};
/*
@@ -61,3 +74,7 @@ hpm5: usb-pd@3a {
&i2c4 {
status = "okay";
};
+
+&fpwm1 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t8112-j493.dts b/arch/arm64/boot/dts/apple/t8112-j493.dts
index 8552c15be265..0ad908349f55 100644
--- a/arch/arm64/boot/dts/apple/t8112-j493.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j493.dts
@@ -11,6 +11,7 @@
#include "t8112.dtsi"
#include "t8112-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>
/ {
compatible = "apple,j493", "apple,t8112", "apple,arm-platform";
@@ -20,6 +21,18 @@ aliases {
bluetooth0 = &bluetooth0;
wifi0 = &wifi0;
};
+
+ led-controller {
+ compatible = "pwm-leds";
+ led-0 {
+ pwms = <&fpwm1 0 40000>;
+ label = "kbd_backlight";
+ function = LED_FUNCTION_KBD_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ max-brightness = <255>;
+ default-state = "keep";
+ };
+ };
};
/*
@@ -50,3 +63,7 @@ bluetooth0: bluetooth@0,1 {
&i2c4 {
status = "okay";
};
+
+&fpwm1 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t8112.dtsi b/arch/arm64/boot/dts/apple/t8112.dtsi
index 698a436e7dac..1666e6ab250b 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -458,6 +458,15 @@ i2c4: i2c@...020000 {
status = "disabled";
};
+ fpwm1: pwm@...044000 {
+ compatible = "apple,t8112-fpwm", "apple,s5l-fpwm";
+ reg = <0x2 0x35044000 0x0 0x4000>;
+ power-domains = <&ps_fpwm1>;
+ clocks = <&clkref>;
+ #pwm-cells = <2>;
+ status = "disabled";
+ };
+
serial0: serial@...200000 {
compatible = "apple,s5l-uart";
reg = <0x2 0x35200000 0x0 0x1000>;
---
base-commit: 8d59efc33fdaa2c82072b4d3ba5f67d7dd9270d0
change-id: 20230409-t8112-fpwm-06e434cc358d
Best regards,
--
Sasha Finkelstein <fnkl.kernel@...il.com>
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