linux-kernel - [PATCH] ARM: dts: stm32: fix pwr regulators references to use scmi

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Message-Id: <20220624090055.569400-1-etienne.carriere@linaro.org>
Date:   Fri, 24 Jun 2022 11:00:55 +0200
From:   Etienne Carriere <etienne.carriere@...aro.org>
To:     linux-kernel@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
        devicetree@...r.kernel.org,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Etienne Carriere <etienne.carriere@...aro.org>
Subject: [PATCH] ARM: dts: stm32: fix pwr regulators references to use scmi

Fixes stm32mp15*-scmi DTS files introduced in [1] to also access PWR
regulators through SCMI service. This is needed since enabling secure
only access to RCC clock and reset controllers also enables secure
access only on PWR voltage regulators reg11, reg18 and usb33 hence
these must also be accessed through SCMI Voltage Domain protocol.
This change applies on commit [2] that already corrects issues from
commit [1].

Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>
Link: [1] https://lore.kernel.org/linux-arm-kernel/20220422150952.20587-7-alexandre.torgue@foss.st.com
Link: [2] https://lore.kernel.org/linux-arm-kernel/20220613071920.5463-1-alexandre.torgue@foss.st.com
Signed-off-by: Etienne Carriere <etienne.carriere@...aro.org>
---
 arch/arm/boot/dts/stm32mp15-scmi.dtsi      | 52 ++++++++++++++++++++++
 arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts |  1 +
 arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts |  1 +
 3 files changed, 54 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp15-scmi.dtsi b/arch/arm/boot/dts/stm32mp15-scmi.dtsi
index e90cf3acd0b3..d2afb6667479 100644
--- a/arch/arm/boot/dts/stm32mp15-scmi.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-scmi.dtsi
@@ -27,6 +27,37 @@ scmi_reset: protocol@16 {
 				reg = <0x16>;
 				#reset-cells = <1>;
 			};
+
+			scmi_voltd: protocol@17 {
+				reg = <0x17>;
+
+				scmi_reguls: regulators {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					scmi_reg11: reg11@0 {
+						reg = <0>;
+						regulator-name = "reg11";
+						regulator-min-microvolt = <1100000>;
+						regulator-max-microvolt = <1100000>;
+					};
+
+					scmi_reg18: reg18@1 {
+						voltd-name = "reg18";
+						reg = <1>;
+						regulator-name = "reg18";
+						regulator-min-microvolt = <1800000>;
+						regulator-max-microvolt = <1800000>;
+					};
+
+					scmi_usb33: usb33@2 {
+						reg = <2>;
+						regulator-name = "usb33";
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+					};
+				};
+			};
 		};
 	};
 
@@ -45,3 +76,24 @@ scmi_shm: scmi-sram@0 {
 		};
 	};
 };
+
+&reg11 {
+	status = "disabled";
+};
+
+&reg18 {
+	status = "disabled";
+};
+
+&usb33 {
+	status = "disabled";
+};
+
+&usbotg_hs {
+	usb33d-supply = <&scmi_usb33>;
+};
+
+&usbphyc {
+	vdda1v1-supply = <&scmi_reg11>;
+	vdda1v8-supply = <&scmi_reg18>;
+};
diff --git a/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts b/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
index 03226a596904..97e4f94b0a24 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
@@ -35,6 +35,7 @@ &cryp1 {
 };
 
 &dsi {
+	phy-dsi-supply = <&scmi_reg18>;
 	clocks = <&rcc DSI_K>, <&scmi_clk CK_SCMI_HSE>, <&rcc DSI_PX>;
 };
 
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts b/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
index 7842384ddbe4..3b9dd6f4ccc9 100644
--- a/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
@@ -36,6 +36,7 @@ &cryp1 {
 };
 
 &dsi {
+	phy-dsi-supply = <&scmi_reg18>;
 	clocks = <&rcc DSI_K>, <&scmi_clk CK_SCMI_HSE>, <&rcc DSI_PX>;
 };
 
-- 
2.25.1