From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Fri, 28 Mar 2025 15:31:35 +0000 (+0100)
Subject: ARM: dts: renesas: r9a06g032-rzn1d400-db: Describe I2C bus
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0c704ebc3783ed0d558162bcbff10846516f3e88;p=users%2Fwilly%2Fxarray.git

ARM: dts: renesas: r9a06g032-rzn1d400-db: Describe I2C bus

Schematics mention a 24cs64 on the bus, but I definitely have only a
24c64. So, it is only mentioned as a comment.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250328153134.2881-9-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/arch/arm/boot/dts/renesas/r9a06g032-rzn1d400-db.dts b/arch/arm/boot/dts/renesas/r9a06g032-rzn1d400-db.dts
index 31cdca3e623c..d50a1d91e968 100644
--- a/arch/arm/boot/dts/renesas/r9a06g032-rzn1d400-db.dts
+++ b/arch/arm/boot/dts/renesas/r9a06g032-rzn1d400-db.dts
@@ -57,6 +57,44 @@
 	};
 };
 
+&i2c2 {
+	pinctrl-0 = <&pins_i2c2>;
+	pinctrl-names = "default";
+	status = "okay";
+	clock-frequency = <400000>;
+
+	pca9698: gpio@20 {
+		compatible = "nxp,pca9698";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		/* configure the analog switch to let i2c2 access the eeprom */
+		max4662-in1-hog {
+			gpio-hog;
+			gpios = <16 0>;
+			output-high;
+		};
+		max4662-in2-hog {
+			gpio-hog;
+			gpios = <17 0>;
+			output-low;
+		};
+		max4662-in3-hog {
+			gpio-hog;
+			gpios = <18 0>;
+			output-low;
+		};
+	};
+
+	/* Some revisions may have a 24cs64 at address 0x58 */
+	eeprom@50 {
+		compatible = "atmel,24c64";
+		pagesize = <32>;
+		reg = <0x50>;
+	};
+};
+
 &mii_conv4 {
 	renesas,miic-input = <MIIC_SWITCH_PORTB>;
 	status = "okay";
@@ -114,6 +152,12 @@
 		bias-disable;
 	};
 
+	pins_i2c2: pins_i2c2 {
+		pinmux = <RZN1_PINMUX(115, RZN1_FUNC_I2C)>,
+			 <RZN1_PINMUX(116, RZN1_FUNC_I2C)>;
+		drive-strength = <12>;
+	};
+
 	pins_mdio1: pins_mdio1 {
 		pinmux = <RZN1_PINMUX(152, RZN1_FUNC_MDIO1_SWITCH)>,
 			 <RZN1_PINMUX(153, RZN1_FUNC_MDIO1_SWITCH)>;