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Subject[PATCH 2/2] arm64: dts: ti: k3-j7200-common-proc-board: Add I2C IO expanders
Date
Add DT nodes for I2C GPIO expanders on main_i2c0 and main_i2c1 and
also add the pinmux corresponding to these I2C instances.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
.../dts/ti/k3-j7200-common-proc-board.dts | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
index e27069317c4e5..26ad2e46009e3 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
@@ -14,6 +14,22 @@ chosen {
};
};

+&main_pmx0 {
+ main_i2c0_pins_default: main-i2c0-pins-default {
+ pinctrl-single,pins = <
+ J721E_IOPAD(0xd4, PIN_INPUT_PULLUP, 0) /* (V3) I2C0_SCL */
+ J721E_IOPAD(0xd8, PIN_INPUT_PULLUP, 0) /* (W2) I2C0_SDA */
+ >;
+ };
+
+ main_i2c1_pins_default: main-i2c1-pins-default {
+ pinctrl-single,pins = <
+ J721E_IOPAD(0xdc, PIN_INPUT_PULLUP, 3) /* (U3) ECAP0_IN_APWM_OUT.I2C1_SCL */
+ J721E_IOPAD(0xe0, PIN_INPUT_PULLUP, 3) /* (T3) EXT_REFCLK1.I2C1_SDA */
+ >;
+ };
+};
+
&wkup_uart0 {
/* Wakeup UART is used by System firmware */
status = "disabled";
@@ -62,3 +78,36 @@ &main_uart9 {
/* UART not brought out */
status = "disabled";
};
+
+&main_i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c0_pins_default>;
+ clock-frequency = <400000>;
+
+ exp1: gpio@20 {
+ compatible = "ti,tca6416";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ exp2: gpio@22 {
+ compatible = "ti,tca6424";
+ reg = <0x22>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+};
+
+&main_i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c1_pins_default>;
+ clock-frequency = <400000>;
+
+ exp4: gpio@20 {
+ compatible = "ti,tca6408";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+};
--
2.28.0
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