arm64: dts: ti: j722s-evm: Add DT nodes for power regulators

Add device tree nodes for two regulators on the J722S-EVM. VSYS_3V3 is the
output of LM5141-Q1, and it serves as an input to TPS22990 which produces
VSYS_3V3_EXP [1]. VSYS_3V3_EXP serves as vin-supply to CSI RPI Connectors.

Signed-off-by: Yemike Abhilash Chandra <[email protected]>
Reviewed-by: Udit Kumar <[email protected]>

[1]: https://www.ti.com/lit/zip/sprr495

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: Yemike-Abhilash-Chandra

arch/arm64/boot/dts/ti/k3-j722s-evm.dts

@@ -141,6 +141,17 @@
 		regulator-boot-on;
 	};
 
+	vsys_3v3: regulator-vsys3v3 {
+		/* output of LM5141-Q1 */
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vmain_pd>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	vdd_mmc1: regulator-mmc1 {
 		/* TPS22918DBVR */
 		compatible = "regulator-fixed";
@@ -153,6 +164,17 @@
 		bootph-all;
 	};
 
+	vsys_3v3_exp: regulator-TPS22990 {
+		/* output of TPS22990 */
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_3v3_exp";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vsys_3v3>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	vdd_sd_dv: regulator-TLV71033 {
 		compatible = "regulator-gpio";
 		regulator-name = "tlv71033";