linux-kernel - [PATCH v5 3/3] arm64: dts: qcom: x1e80100-qcp: enable pcie3 x8 slot for X1E80100-QCP

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Message-Id: <20250722091151.1423332-4-quic_wenbyao@quicinc.com>
Date: Tue, 22 Jul 2025 17:11:51 +0800
From: Wenbin Yao <quic_wenbyao@...cinc.com>
To: lpieralisi@...nel.org, kwilczynski@...nel.org, mani@...nel.org,
        robh@...nel.org, bhelgaas@...gle.com, sfr@...b.auug.org.au,
        qiang.yu@....qualcomm.com, quic_wenbyao@...cinc.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        andersson@...nel.org, konradybcio@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org
Cc: krishna.chundru@....qualcomm.com, quic_vbadigan@...cinc.com,
        quic_mrana@...cinc.com, quic_cang@...cinc.com,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v5 3/3] arm64: dts: qcom: x1e80100-qcp: enable pcie3 x8 slot for X1E80100-QCP

From: Qiang Yu <qiang.yu@....qualcomm.com>

Add perst, wake and clkreq sideband signals and required regulators in
PCIe3 controller and PHY device tree node. Describe the voltage rails of
the x8 PCI slots for PCIe3 port.

Signed-off-by: Qiang Yu <qiang.yu@....qualcomm.com>
Signed-off-by: Wenbin Yao <quic_wenbyao@...cinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/x1e80100-qcp.dts | 118 ++++++++++++++++++++++
 1 file changed, 118 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
index 4dfba835a..71c44e37a 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
@@ -318,6 +318,48 @@ vreg_wcn_3p3: regulator-wcn-3p3 {
 		regulator-boot-on;
 	};
 
+	vreg_pcie_12v: regulator-pcie-12v {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_PCIE_12V";
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+
+		gpio = <&pm8550ve_8_gpios 8 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&pcie_x8_12v>;
+		pinctrl-names = "default";
+	};
+
+	vreg_pcie_3v3_aux: regulator-pcie-3v3-aux {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_PCIE_3P3_AUX";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&pmc8380_3_gpios 8 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&pm_sde7_aux_3p3_en>;
+		pinctrl-names = "default";
+	};
+
+	vreg_pcie_3v3: regulator-pcie-3v3 {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_PCIE_3P3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&pmc8380_3_gpios 6 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&pm_sde7_main_3p3_en>;
+		pinctrl-names = "default";
+};
+
 	usb-1-ss0-sbu-mux {
 		compatible = "onnn,fsusb42", "gpio-sbu-mux";
 
@@ -908,6 +950,59 @@ &mdss_dp3_phy {
 	status = "okay";
 };
 
+&pm8550ve_8_gpios {
+	pcie_x8_12v: pcie-12v-default-state {
+		pins = "gpio8";
+		function = "normal";
+		output-enable;
+		output-high;
+		bias-pull-down;
+		power-source = <0>;
+	};
+};
+
+&pmc8380_3_gpios {
+	pm_sde7_aux_3p3_en: pcie-aux-3p3-default-state {
+		pins = "gpio8";
+		function = "normal";
+		output-enable;
+		output-high;
+		bias-pull-down;
+		power-source = <0>;
+	};
+
+	pm_sde7_main_3p3_en: pcie-main-3p3-default-state {
+		pins = "gpio6";
+		function = "normal";
+		output-enable;
+		output-high;
+		bias-pull-down;
+		power-source = <0>;
+	};
+};
+
+&pcie3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie3_default>;
+	perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 145 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
+&pcie3_phy {
+	vdda-phy-supply = <&vreg_l3c_0p8>;
+	vdda-pll-supply = <&vreg_l3e_1p2>;
+
+	status = "okay";
+};
+
+&pcie3_port {
+	vpcie12v-supply = <&vreg_pcie_12v>;
+	vpcie3v3-supply = <&vreg_pcie_3v3>;
+	vpcie3v3aux-supply = <&vreg_pcie_3v3_aux>;
+};
+
 &pcie4 {
 	perst-gpios = <&tlmm 146 GPIO_ACTIVE_LOW>;
 	wake-gpios = <&tlmm 148 GPIO_ACTIVE_LOW>;
@@ -1119,6 +1214,29 @@ nvme_reg_en: nvme-reg-en-state {
 		bias-disable;
 	};
 
+	pcie3_default: pcie3-default-state {
+		clkreq-n-pins {
+			pins = "gpio144";
+			function = "pcie3_clk";
+			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;
+		};
+	};
+
 	pcie4_default: pcie4-default-state {
 		clkreq-n-pins {
 			pins = "gpio147";
-- 
2.34.1