linux-kernel - [PATCH 4/5] arm64: dts: apple: t8010: Add backlight nodes

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Message-Id: <20250220-dwi-dt-v1-4-d742431c7373@gmail.com>
Date: Thu, 20 Feb 2025 23:51:06 +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 4/5] arm64: dts: apple: t8010: Add backlight nodes

Add DWI backlight controller nodes for Apple A10 SoC, and enable it for:

- iPhone 7
- iPhone 7 Plus
- iPad touch 7
- iPad 6
- iPad 7

Signed-off-by: Nick Chan <towinchenmi@...il.com>
---
 arch/arm64/boot/dts/apple/t8010-common.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/t8010.dtsi        | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t8010-common.dtsi b/arch/arm64/boot/dts/apple/t8010-common.dtsi
index 6613fb57c92fffd41c34a61a78e7bb6b1888a5ea..44dc968638b13814baf94e782f2267191ce267f9 100644
--- a/arch/arm64/boot/dts/apple/t8010-common.dtsi
+++ b/arch/arm64/boot/dts/apple/t8010-common.dtsi
@@ -43,6 +43,10 @@ reserved-memory {
 	};
 };
 
+&dwi_bl {
+	status = "okay";
+};
+
 &serial0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/apple/t8010.dtsi b/arch/arm64/boot/dts/apple/t8010.dtsi
index b355d443ee476e7c98b352470e3b1b5d0fae7652..17e294bd7c44c7961cc3ba0ec5f4178840d5b9c6 100644
--- a/arch/arm64/boot/dts/apple/t8010.dtsi
+++ b/arch/arm64/boot/dts/apple/t8010.dtsi
@@ -167,6 +167,13 @@ aic: interrupt-controller@...100000 {
 			power-domains = <&ps_aic>;
 		};
 
+		dwi_bl: backlight@...200080 {
+			compatible = "apple,t8010-dwi-bl", "apple,dwi-bl";
+			reg = <0x2 0x0e200080 0x0 0x8>;
+			power-domains = <&ps_dwi>;
+			status = "disabled";
+		};
+
 		pinctrl_ap: pinctrl@...100000 {
 			compatible = "apple,t8010-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x0f100000 0x0 0x100000>;

-- 
2.48.1