From 9b882afc7f9d350647f1f439582d678f14ba2d5f Mon Sep 17 00:00:00 2001
From: Aswath Govindraju <a-govindraju@ti.com>
Date: Wed, 9 Dec 2020 22:39:05 +0530
Subject: [PATCH] arm64: dts: ti: k3-am642-evm: Add GPIO expander node
Add pinmux details and device tree node for GPIO expander attached
to I2C1 in main domain.
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
arch/arm64/boot/dts/ti/k3-am642-evm.dts | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 792884dbf5724..12e983a9ded6c 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -91,6 +91,13 @@ main_usb0_pins_default: main-usb0-pins-default {
AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
>;
};
+
+ main_i2c1_pins_default: main-i2c1-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */
+ AM64X_IOPAD(0x026c, PIN_INPUT_PULLUP, 0) /* (B19) I2C1_SDA */
+ >;
+ };
};
&cpsw3g {
@@ -127,3 +134,16 @@ &usb0 {
pinctrl-names = "default";
pinctrl-0 = <&main_usb0_pins_default>;
};
+
+&main_i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c1_pins_default>;
+ clock-frequency = <400000>;
+
+ exp1: gpio@22 {
+ compatible = "ti,tca6424";
+ reg = <0x22>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+};
--
GitLab