linux-kernel - [PATCH V3 05/11] arm64: tegra: Add regulators required for PCIe

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Date:   Wed, 29 Jun 2022 11:34:29 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <bhelgaas@...gle.com>, <lorenzo.pieralisi@....com>,
        <robh+dt@...nel.org>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>
CC:     <kishon@...com>, <vkoul@...nel.org>, <kw@...ux.com>,
        <krzk@...nel.org>, <p.zabel@...gutronix.de>,
        <mperttunen@...dia.com>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <kthota@...dia.com>, <mmaddireddy@...dia.com>, <vidyas@...dia.com>,
        <sagar.tv@...il.com>
Subject: [PATCH V3 05/11] arm64: tegra: Add regulators required for PCIe

Add regulator supplies required for PCIe functionality. The supplies
include 1.8V, 3.3V and 12V.

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
---
V3:
* New patch in this series

 .../boot/dts/nvidia/tegra234-p3701-0000.dtsi  | 24 +++++++++++++++++++
 .../boot/dts/nvidia/tegra234-p3737-0000.dtsi  | 23 ++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
index 798de9226ba5..d53901ba45f6 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
@@ -6,6 +6,30 @@
 	model = "NVIDIA Jetson AGX Orin";
 	compatible = "nvidia,p3701-0000", "nvidia,tegra234";
 
+	fixed-regulators {
+		compatible = "simple-bus";
+		device_type = "fixed-regulators";
+		#address-cells = <0x1>;
+		#size-cells = <0x0>;
+
+		p3701_vdd_1v8_ls: regulator@3 {
+			compatible = "regulator-fixed";
+			reg = <3>;
+			regulator-name = "vdd-1v8-ls-sw5";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+		p3701_vdd_AO_1v8: regulator@5 {
+			compatible = "regulator-fixed";
+			reg = <5>;
+			regulator-name = "vdd-AO-1v8-sw2";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+	};
+
 	bus@0 {
 		spi@...0000 {
 			status = "okay";
diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
index a85993c85e45..bb503643dd38 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
@@ -2,4 +2,27 @@
 
 / {
 	compatible = "nvidia,p3737-0000";
+
+	fixed-regulators {
+		p3737_vdd_3v3_pcie: regulator@105 {
+			compatible = "regulator-fixed";
+			reg = <105>;
+			regulator-name = "vdd-3v3-pcie";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			gpio = <&gpio TEGRA234_MAIN_GPIO(Z, 2) 0>;
+			enable-active-high;
+			regulator-boot-on;
+		};
+		p3737_vdd_12v_pcie: regulator@114 {
+			compatible = "regulator-fixed";
+			reg = <114>;
+			regulator-name = "vdd-12v-pcie";
+			regulator-min-microvolt = <12000000>;
+			regulator-max-microvolt = <12000000>;
+			gpio = <&gpio TEGRA234_MAIN_GPIO(A, 1) 1>;
+			regulator-boot-on;
+			enable-active-low;
+		};
+	};
 };
-- 
2.17.1