linux-kernel - [PATCH 2/4] ARM: dts: stm32: STM32MP13x SoC exposes SCMI regulators

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Date:   Wed, 12 Jul 2023 16:24:30 +0200
From:   <p.paillet@...s.st.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Russell King <linux@...linux.org.uk>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <p.paillet@...s.st.com>,
        Etienne Carriere <etienne.carriere@...s.st.com>
Subject: [PATCH 2/4] ARM: dts: stm32: STM32MP13x SoC exposes SCMI regulators

From: Etienne Carriere <etienne.carriere@...s.st.com>

Updates STM32MP13x SoC DTSI file to define the SoC voltage regulators
exposed by OP-TEE SCMI service and remove the fixed regulator
abstraction previously used until OP-TEE OS firmware embeds the
service which it does since its release tag 3.22.0.

Signed-off-by: Etienne Carriere <etienne.carriere@...s.st.com>
Signed-off-by: Pascal Paillet <p.paillet@...s.st.com>
---
 arch/arm/boot/dts/st/stm32mp131.dtsi | 50 ++++++++++++++--------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index 672f3b7735a2..ac90fcbf0c09 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -52,6 +52,28 @@ scmi_reset: protocol@16 {
 				reg = <0x16>;
 				#reset-cells = <1>;
 			};
+
+			scmi_voltd: protocol@17 {
+				reg = <0x17>;
+
+				scmi_regu: regulators {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					scmi_reg11: regulator@0 {
+						reg = <VOLTD_SCMI_REG11>;
+						regulator-name = "reg11";
+					};
+					scmi_reg18: regulator@1 {
+						reg = <VOLTD_SCMI_REG18>;
+						regulator-name = "reg18";
+					};
+					scmi_usb33: regulator@2 {
+						reg = <VOLTD_SCMI_USB33>;
+						regulator-name = "usb33";
+					};
+				};
+			};
 		};
 	};
 
@@ -78,28 +100,6 @@ 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>;
@@ -801,7 +801,7 @@ usbotg_hs: usb@...00000 {
 			g-tx-fifo-size = <256 16 16 16 16 16 16 16>;
 			dr_mode = "otg";
 			otg-rev = <0x200>;
-			usb33d-supply = <&usb33>;
+			usb33d-supply = <&scmi_usb33>;
 			status = "disabled";
 		};
 
@@ -1331,8 +1331,8 @@ usbphyc: usbphyc@...06000 {
 			reg = <0x5a006000 0x1000>;
 			clocks = <&rcc USBPHY_K>;
 			resets = <&rcc USBPHY_R>;
-			vdda1v1-supply = <&reg11>;
-			vdda1v8-supply = <&reg18>;
+			vdda1v1-supply = <&scmi_reg11>;
+			vdda1v8-supply = <&scmi_reg18>;
 			status = "disabled";
 
 			usbphyc_port0: usb-phy@0 {
-- 
2.25.1