[PATCH 05/10] ARM: dts: stm32: add fixed regulators to support usb on stm32mp135f-dk

[Fabrice Gasnier]

Add VDD_USB and 3V3_SW regulators on stm32mp135f-dk. Temporary add them
as fixed regulators, waiting for full SCMI regulators support.

This is a precursor patch to enable USB support on STM32MP13:
- VDD_USB supplies the STM32MP13 USB internals
- 3V3_SW supplies various peripherals, including the onboard HUB.
Note: USB support requires these regulators to be enabled before
entering the kernel.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>
---
 arch/arm/boot/dts/stm32mp135f-dk.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp135f-dk.dts b/arch/arm/boot/dts/stm32mp135f-dk.dts
index de341d17e87d..291f05a958fd 100644
--- a/arch/arm/boot/dts/stm32mp135f-dk.dts
+++ b/arch/arm/boot/dts/stm32mp135f-dk.dts
@@ -66,6 +66,22 @@ vdd_sd: vdd-sd {
 		regulator-max-microvolt = <2900000>;
 		regulator-always-on;
 	};
+
+	vdd_usb: vdd-usb {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_usb";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	v3v3_sw: v3v3-sw {
+		compatible = "regulator-fixed";
+		regulator-name = "v3v3_sw";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
 };
 
 &i2c1 {
-- 
2.25.1