linux-kernel - [PATCH v2 5/9] arm64: dts: apple: s800-0-3: Add I2C nodes

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Message-Id: <20250610-i2c-no-t2-v2-5-a5a71080fba9@gmail.com>
Date: Tue, 10 Jun 2025 21:45:24 +0800
From: Nick Chan <towinchenmi@...il.com>
To: Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>, Andi Shyti <andi.shyti@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Sven Peter <sven@...nel.org>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-i2c@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Nick Chan <towinchenmi@...il.com>
Subject: [PATCH v2 5/9] arm64: dts: apple: s800-0-3: Add I2C nodes

Add I2C nodes for Apple A9 SoC.

There is actually an i2c3 on this SoC but the SCL and SDA lines
appears to be not connected and no peripherals are expected to be
connected to it, so there is no node for it.

Signed-off-by: Nick Chan <towinchenmi@...il.com>
---
 arch/arm64/boot/dts/apple/s800-0-3.dtsi | 57 +++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/s800-0-3.dtsi b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
index 09db4ed64054aefe5b8f8298553d87fe5514e81a..bb38662b7d2e0b70e18b6870b706789b1cb242af 100644
--- a/arch/arm64/boot/dts/apple/s800-0-3.dtsi
+++ b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
@@ -88,6 +88,48 @@ serial0: serial@...0c0000 {
 			status = "disabled";
 		};
 
+		i2c0: i2c@...110000 {
+			compatible = "apple,s8000-i2c", "apple,i2c";
+			reg = <0x2 0x0a110000 0x0 0x1000>;
+			clocks = <&clkref>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 206 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-0 = <&i2c0_pins>;
+			pinctrl-names = "default";
+			power-domains = <&ps_i2c0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@...111000 {
+			compatible = "apple,s8000-i2c", "apple,i2c";
+			reg = <0x2 0x0a111000 0x0 0x1000>;
+			clocks = <&clkref>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 207 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-0 = <&i2c1_pins>;
+			pinctrl-names = "default";
+			power-domains = <&ps_i2c1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@...112000 {
+			compatible = "apple,s8000-i2c", "apple,i2c";
+			reg = <0x2 0x0a112000 0x0 0x1000>;
+			clocks = <&clkref>;
+			interrupt-parent = <&aic>;
+			interrupts = <AIC_IRQ 208 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-0 = <&i2c2_pins>;
+			pinctrl-names = "default";
+			power-domains = <&ps_i2c2>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		pmgr: power-management@...000000 {
 			compatible = "apple,s8000-pmgr", "apple,pmgr", "syscon", "simple-mfd";
 			#address-cells = <1>;
@@ -131,6 +173,21 @@ pinctrl_ap: pinctrl@...100000 {
 				     <AIC_IRQ 46 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 47 IRQ_TYPE_LEVEL_HIGH>,
 				     <AIC_IRQ 48 IRQ_TYPE_LEVEL_HIGH>;
+
+			i2c0_pins: i2c0-pins {
+				pinmux = <APPLE_PINMUX(46, 1)>,
+					 <APPLE_PINMUX(45, 1)>;
+			};
+
+			i2c1_pins: i2c1-pins {
+				pinmux = <APPLE_PINMUX(115, 1)>,
+					 <APPLE_PINMUX(114, 1)>;
+			};
+
+			i2c2_pins: i2c2-pins {
+				pinmux = <APPLE_PINMUX(23, 1)>,
+					 <APPLE_PINMUX(22, 1)>;
+			};
 		};
 
 		pinctrl_aop: pinctrl@...0f0000 {

-- 
2.49.0