linux-kernel - [PATCH 01/10] ARM: dts: stm32: add PWR fixed regulators on stm32mp131

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Date:   Fri, 14 Oct 2022 11:26:42 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...s.st.com>
To:     <alexandre.torgue@...s.st.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <amelie.delaunay@...s.st.com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <fabrice.gasnier@...s.st.com>
Subject: [PATCH 01/10] ARM: dts: stm32: add PWR fixed regulators on stm32mp131

Add 1v1, 1v8 and 3v3 PWR regulators on stm32mp131. Temporary add them
as fixed regulators, waiting for full SCMI regulators support.

This is a precursor patch to enable USB support on STM32MP13.
Note: USB support requires these regulators to be enabled before
entering kernel.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
---
 arch/arm/boot/dts/stm32mp131.dtsi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp131.dtsi b/arch/arm/boot/dts/stm32mp131.dtsi
index dd35a607073d..e0e0e27a9221 100644
--- a/arch/arm/boot/dts/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/stm32mp131.dtsi
@@ -77,6 +77,28 @@ timer {
 		always-on;
 	};
 
+	/* PWR 1v1, 1v8 and 3v3 regulators defined as fixed, waiting for SCMI */
+	reg11: reg11 {
+		compatible = "regulator-fixed";
+		regulator-name = "reg11";
+		regulator-min-microvolt = <1100000>;
+		regulator-max-microvolt = <1100000>;
+	};
+
+	reg18: reg18 {
+		compatible = "regulator-fixed";
+		regulator-name = "reg18";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	usb33: usb33 {
+		compatible = "regulator-fixed";
+		regulator-name = "usb33";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
-- 
2.25.1