[PATCH] arm64: dts: imx8mp-evk: add regulator supply to CPU nodes

From: Lucas Stach <l.stach@pengutronix.de>
To: Shawn Guo <shawnguo@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	linux-arm-kernel@lists.infradead.org,
	Fabio Estevam <festevam@gmail.com>,
	patchwork-lst@pengutronix.de
Subject: [PATCH] arm64: dts: imx8mp-evk: add regulator supply to CPU nodes
Date: Wed, 25 May 2022 12:35:20 +0200	[thread overview]
Message-ID: <20220525103520.3357615-1-l.stach@pengutronix.de> (raw)

This supply is used by cpufreq to scale the voltage applied to the
ARM voltage domain of the SoC when switching between the different
operating points.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 4c3ac4214a2c..6975de72e3df 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -67,6 +67,22 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
 	};
 };
 
+&A53_0 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_1 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_2 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_3 {
+	cpu-supply = <&reg_arm>;
+};
+
 &flexcan1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_flexcan1>;
@@ -221,7 +237,7 @@ BUCK1 {
 				regulator-ramp-delay = <3125>;
 			};
 
-			BUCK2 {
+			reg_arm: BUCK2 {
 				regulator-name = "BUCK2";
 				regulator-min-microvolt = <720000>;
 				regulator-max-microvolt = <1025000>;
-- 
2.30.2


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