arm64: dts: ti: k3-j7200-som: Enable I2C

This patch enables wkup_i2c0 node in board dts file
along with pin mux and speed.
Also enables underneath eeprom CAV24C256WE.

J7200 Datasheet (Table 6-106, Section 6.4 Pin Multiplexing) :
https://www.ti.com/lit/ds/symlink/dra821u.pdf

J7200 User Guide (Section 4.3, Table 4-2) :
https://www.ti.com/lit/ug/spruiw7a/spruiw7a.pdf

Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20230419040007.3022780-3-u-kumar1@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
index fa44ed4..2694241 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
@@ -118,6 +118,15 @@
        };
 };
 
+&wkup_pmx2 {
+       wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+                       pinctrl-single,pins = <
+                       J721E_WKUP_IOPAD(0x98, PIN_INPUT_PULLUP, 0) /* (F20) WKUP_I2C0_SCL */
+                       J721E_WKUP_IOPAD(0x9c, PIN_INPUT_PULLUP, 0) /* (H21) WKUP_I2C0_SDA */
+               >;
+       };
+};
+
 &main_pmx0 {
        main_i2c0_pins_default: main-i2c0-pins-default {
                pinctrl-single,pins = <
@@ -214,6 +223,18 @@
        };
 };
 
+&wkup_i2c0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&wkup_i2c0_pins_default>;
+       clock-frequency = <400000>;
+
+       eeprom@50 {
+               compatible = "atmel,24c256";
+               reg = <0x50>;
+       };
+};
+
 &ospi0 {
        pinctrl-names = "default";
        pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;