linux-kernel - [PATCH 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes

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Message-Id: <20250220-dwi-dt-v1-1-d742431c7373@gmail.com>
Date: Thu, 20 Feb 2025 23:51:03 +0800
From: Nick Chan <towinchenmi@...il.com>
To: Janne Grunau <j@...nau.net>, 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, 
 Nick Chan <towinchenmi@...il.com>
Subject: [PATCH 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes

Add DWI backlight controller nodes for Apple A7 SoC, and enable it for
iPhone 5s.

Signed-off-by: Nick Chan <towinchenmi@...il.com>
---
 arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/s5l8960x.dtsi    | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi b/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
index bfbd2629e206736822a157431ec959e1aa70f41b..8868df1538d68595cfe92c80b1fcecee42d348df 100644
--- a/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
+++ b/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
@@ -51,6 +51,10 @@ switch-mute {
 	};
 };
 
+&dwi_bl {
+	status = "okay";
+};
+
 &framebuffer0 {
 	power-domains = <&ps_disp0 &ps_mipi_dsi>;
 };
diff --git a/arch/arm64/boot/dts/apple/s5l8960x.dtsi b/arch/arm64/boot/dts/apple/s5l8960x.dtsi
index 64dbae5c73515bb6a1651b9b26d349d0cfd0408a..b109a1e7fcdad4ee3caf0efd2c56d76c66706e9e 100644
--- a/arch/arm64/boot/dts/apple/s5l8960x.dtsi
+++ b/arch/arm64/boot/dts/apple/s5l8960x.dtsi
@@ -100,6 +100,13 @@ aic: interrupt-controller@...100000 {
 			power-domains = <&ps_aic>;
 		};
 
+		dwi_bl: backlight@...200010 {
+			compatible = "apple,s5l8960x-dwi-bl", "apple,dwi-bl";
+			reg = <0x2 0xe200010 0x0 0x8>;
+			power-domains = <&ps_dwi>;
+			status = "disabled";
+		};
+
 		pinctrl: pinctrl@...300000 {
 			compatible = "apple,s5l8960x-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x0e300000 0x0 0x100000>;

-- 
2.48.1