linux-kernel - [PATCH v9 4/5] arm64: dts: apple: t600x: Add PWM controller

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Message-Id: <20230214-fpwm-v9-4-dbe26bccabd6@gmail.com>
Date:   Sat, 11 Mar 2023 06:11:12 +0100
From:   Sasha Finkelstein via B4 Relay 
        <devnull+fnkl.kernel.gmail.com@...nel.org>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        - <asahi@...ts.linux.dev>,
        Sasha Finkelstein <fnkl.kernel@...il.com>,
        Hector Martin <marcan@...can.st>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>
Cc:     linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Sasha Finkelstein <7d578vix8hzw@...yq.net>
Subject: [PATCH v9 4/5] arm64: dts: apple: t600x: Add PWM controller

From: Sasha Finkelstein <7d578vix8hzw@...yq.net>

Adds PWM controller and keyboard backlight bindings for M1 Pro/Max MacBook Pros

Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
Acked-by: Hector Martin <marcan@...can.st>
---
 arch/arm64/boot/dts/apple/t600x-die0.dtsi      |  9 +++++++++
 arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi | 18 ++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t600x-die0.dtsi b/arch/arm64/boot/dts/apple/t600x-die0.dtsi
index 1c41954e3899..9157ae2a9f7f 100644
--- a/arch/arm64/boot/dts/apple/t600x-die0.dtsi
+++ b/arch/arm64/boot/dts/apple/t600x-die0.dtsi
@@ -71,6 +71,15 @@ sio_dart_1: iommu@...008000 {
 		power-domains = <&ps_sio_cpu>;
 	};
 
+	fpwm0: pwm@...030000 {
+		compatible = "apple,t6000-fpwm", "apple,s5l-fpwm";
+		reg = <0x3 0x9b030000 0x0 0x4000>;
+		power-domains = <&ps_fpwm0>;
+		clocks = <&clkref>;
+		#pwm-cells = <2>;
+		status = "disabled";
+	};
+
 	i2c0: i2c@...040000 {
 		compatible = "apple,t6000-i2c", "apple,i2c";
 		reg = <0x3 0x9b040000 0x0 0x4000>;
diff --git a/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi b/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
index 34906d522f0a..96de7165df6d 100644
--- a/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
+++ b/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
@@ -9,6 +9,8 @@
  * Copyright The Asahi Linux Contributors
  */
 
+#include <dt-bindings/leds/common.h>
+
 / {
 	aliases {
 		serial0 = &serial0;
@@ -34,6 +36,18 @@ memory@...00000000 {
 		device_type = "memory";
 		reg = <0x100 0 0x2 0>; /* To be filled by loader */
 	};
+
+	led-controller {
+		compatible = "pwm-leds";
+		led-0 {
+			pwms = <&fpwm0 0 40000>;
+			label = "kbd_backlight";
+			function = LED_FUNCTION_KBD_BACKLIGHT;
+			color = <LED_COLOR_ID_WHITE>;
+			max-brightness = <255>;
+			default-state = "keep";
+		};
+	};
 };
 
 &serial0 {
@@ -110,5 +124,9 @@ &pcie0_dart_3 {
 	status = "disabled";
 };
 
+&fpwm0 {
+	status = "okay";
+};
+
 /delete-node/ &port02;
 /delete-node/ &port03;

-- 
Git-137.1)