arm64: dts: ti: k3-j7200-common-proc-board: Add I2C IO expanders

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>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Reviewed-by: Faiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200923155400.13757-3-vigneshr@ti.com

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 b8000dfb791cad8738b884f521db905ac177e216..c71b8ec1d55e6e5123fa23310344f684c5aab9c0 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
@@ -41,6 +41,22 @@
        };
 };
 
+&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";
@@ -108,3 +124,36 @@
        phy-mode = "rgmii-rxid";
        phy-handle = <&phy0>;
 };
+
+&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>;
+       };
+};