[PATCH 2/4] arm: dts: k3-j721e-common-proc-board: Add I2C GPIO expander
Vignesh Raghavendra
vigneshr at ti.com
Mon Jan 27 18:52:14 CET 2020
Add I2C GPIO expander required to power cycle MMC/SD
Signed-off-by: Vignesh Raghavendra <vigneshr at ti.com>
---
arch/arm/dts/k3-j721e-common-proc-board.dts | 27 +++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm/dts/k3-j721e-common-proc-board.dts b/arch/arm/dts/k3-j721e-common-proc-board.dts
index f33a6d5bcff5..d216b707fd2c 100644
--- a/arch/arm/dts/k3-j721e-common-proc-board.dts
+++ b/arch/arm/dts/k3-j721e-common-proc-board.dts
@@ -107,6 +107,13 @@
J721E_IOPAD(0x214, PIN_OUTPUT, 4) /* (V4) MCAN1_TX.USB1_DRVVBUS */
>;
};
+
+ main_i2c0_pins_default: main-i2c0-pins-default {
+ pinctrl-single,pins = <
+ J721E_IOPAD(0x220, PIN_INPUT_PULLUP, 0) /* (AC5) I2C0_SCL */
+ J721E_IOPAD(0x224, PIN_INPUT_PULLUP, 0) /* (AA5) I2C0_SDA */
+ >;
+ };
};
&wkup_pmx0 {
@@ -145,3 +152,23 @@
pinctrl-0 = <&wkup_i2c0_pins_default>;
clock-frequency = <400000>;
};
+
+&main_i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c0_pins_default>;
+ clock-frequency = <400000>;
+
+ exp1: gpio at 20 {
+ compatible = "ti,tca6416";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ exp2: gpio at 22 {
+ compatible = "ti,tca6424";
+ reg = <0x22>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+};
--
2.25.0
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