linux-kernel - [PATCH V4 4/9] arm64: tegra: Add regulators required for PCIe

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Date:   Thu, 7 Jul 2022 13:42:56 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <bhelgaas@...gle.com>, <lpieralisi@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>
CC:     <kw@...ux.com>, <kishon@...com>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <vidyas@...dia.com>, <sagar.tv@...il.com>
Subject: [PATCH V4 4/9] 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>
---
V4:
* Addressed review comments from Krzysztof
* Moved all regulator definitions to tegra234-p3701-0000.dtsi file

V3:
* New patch in this series

 .../boot/dts/nvidia/tegra234-p3701-0000.dtsi  | 36 +++++++++++++++++++
 1 file changed, 36 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..9e4d72cfa69f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
@@ -6,6 +6,42 @@
 	model = "NVIDIA Jetson AGX Orin";
 	compatible = "nvidia,p3701-0000", "nvidia,tegra234";
 
+	vdd_1v8_ls: regulator-vdd-1v8-ls {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_1V8_LS";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	vdd_1v8_ao: regulator-vdd-1v8-ao {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_1V8_AO";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	vdd_3v3_pcie: regulator-vdd-3v3-pcie {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_3V3_PCIE";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio TEGRA234_MAIN_GPIO(Z, 2) GPIO_ACTIVE_HIGH>;
+		regulator-boot-on;
+		enable-active-high;
+	};
+
+	vdd_12v_pcie: regulator-vdd-12v-pcie {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_12V_PCIE";
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+		gpio = <&gpio TEGRA234_MAIN_GPIO(A, 1) GPIO_ACTIVE_LOW>;
+		regulator-boot-on;
+		enable-active-low;
+	};
+
 	bus@0 {
 		spi@...0000 {
 			status = "okay";
-- 
2.17.1