[v2,2/2] arm64: dts: ti: k3-j7200-common-proc-board: Add I2C IO expanders

Commit Message

Vignesh Raghavendra Sept. 23, 2020, 3:54 p.m. UTC

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 <[e-mail]>
---
 .../dts/ti/k3-j7200-common-proc-board.dts     | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

Patch

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 e27069317c4e..26ad2e46009e 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>;
+	};
+};