linux-kernel - [PATCH 7/9] arm64: dts: qcom: sc8280xp-x13s: enable NVMe SSD

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Date:   Thu, 10 Nov 2022 11:35:56 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 7/9] arm64: dts: qcom: sc8280xp-x13s: enable NVMe SSD

Enable the NVMe SSD connected to PCIe2.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts    | 72 +++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
index 4424d5b2c578..8fce60b0d16c 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -124,6 +124,22 @@ vreg_misc_3p3: regulator-misc-3p3 {
 		regulator-boot-on;
 		regulator-always-on;
 	};
+
+	vreg_nvme: regulator-nvme {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VCC3_SSD";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 135 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&nvme_reg_en>;
+
+		regulator-boot-on;
+	};
 };
 
 &apps_rsc {
@@ -211,6 +227,13 @@ vreg_l4d: ldo4 {
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
 
+		vreg_l6d: ldo6 {
+			regulator-name = "vreg_l6d";
+			regulator-min-microvolt = <880000>;
+			regulator-max-microvolt = <880000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
 		vreg_l7d: ldo7 {
 			regulator-name = "vreg_l7d";
 			regulator-min-microvolt = <3072000>;
@@ -227,6 +250,25 @@ vreg_l9d: ldo9 {
 	};
 };
 
+&pcie2a {
+	perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 145 GPIO_ACTIVE_LOW>;
+
+	vddpe-3v3-supply = <&vreg_nvme>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie2a_default>;
+
+	status = "okay";
+};
+
+&pcie2a_phy {
+	vdda-phy-supply = <&vreg_l6d>;
+	vdda-pll-supply = <&vreg_l4d>;
+
+	status = "okay";
+};
+
 &pmc8280c_lpg {
 	status = "okay";
 };
@@ -592,6 +634,36 @@ hall_int_state: hall-int-state {
 		bias-disable;
 	};
 
+	nvme_reg_en: nvme-reg-en-state {
+		pins = "gpio135";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	pcie2a_default: pcie2a-default-state {
+		clkreq-n-pins {
+			pins = "gpio142";
+			function = "pcie2a_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio143";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+		       pins = "gpio145";
+		       function = "gpio";
+		       drive-strength = <2>;
+		       bias-pull-up;
+	       };
+	};
+
 	qup0_i2c4_default: qup0-i2c4-default-state {
 		pins = "gpio171", "gpio172";
 		function = "qup4";
-- 
2.37.4