linux-kernel - [PATCH v3 3/4] arm64: dts: qcom: qcs615-ride: Enable PCIe interface

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Message-Id: <20250310065613.151598-4-quic_ziyuzhan@quicinc.com>
Date: Mon, 10 Mar 2025 14:56:12 +0800
From: Ziyue Zhang <quic_ziyuzhan@...cinc.com>
To: bhelgaas@...gle.com, lpieralisi@...nel.org, kw@...ux.com,
        manivannan.sadhasivam@...aro.org, robh@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, vkoul@...nel.org, kishon@...nel.org,
        andersson@...nel.org, konradybcio@...nel.org,
        dmitry.baryshkov@...aro.org, neil.armstrong@...aro.org,
        abel.vesa@...aro.org
Cc: quic_ziyuzhan@...cinc.com, quic_qianyu@...cinc.com,
        quic_krichai@...cinc.com, johan+linaro@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v3 3/4] arm64: dts: qcom: qcs615-ride: Enable PCIe interface

From: Krishna chaitanya chundru <quic_krichai@...cinc.com>

Add platform configurations in devicetree for PCIe, board related
gpios, PMIC regulators, etc.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@...cinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/qcs8300-ride.dts | 40 +++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
index b5c9f89b3435..80b946876f94 100644
--- a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
+++ b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
@@ -285,6 +285,23 @@ queue3 {
 	};
 };
 
+&pcie {
+	perst-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 100 GPIO_ACTIVE_HIGH>;
+
+	pinctrl-0 = <&pcie_default_state>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&pcie_phy {
+	vdda-phy-supply = <&vreg_l5a>;
+	vdda-pll-supply = <&vreg_l12a>;
+
+	status = "okay";
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
@@ -325,6 +342,29 @@ ethernet0_mdio: ethernet0-mdio-pins {
 			bias-pull-up;
 		};
 	};
+
+	pcie_default_state: pcie-default-state {
+		clkreq-pins {
+			pins = "gpio90";
+			function = "pcie_clk_req";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-pins {
+			pins = "gpio101";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-pins {
+			pins = "gpio100";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
 };
 
 &uart7 {
-- 
2.25.1