linux-kernel - [PATCH v4 5/5] ARM: dts: qcom: sdx65-mtp: Enable PCIe EP

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Date:   Fri, 17 Mar 2023 12:23:59 +0530
From:   Rohit Agarwal <quic_rohiagar@...cinc.com>
To:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        lee@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mani@...nel.org,
        lpieralisi@...nel.org, kw@...ux.com, bhelgaas@...gle.com,
        manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        Rohit Agarwal <quic_rohiagar@...cinc.com>
Subject: [PATCH v4 5/5] ARM: dts: qcom: sdx65-mtp: Enable PCIe EP

Enable PCIe Endpoint controller on the SDX65 MTP board based
on Qualcomm SDX65 platform.

Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
---
 arch/arm/boot/dts/qcom-sdx65-mtp.dts | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx65-mtp.dts b/arch/arm/boot/dts/qcom-sdx65-mtp.dts
index 70720e6..afe970a 100644
--- a/arch/arm/boot/dts/qcom-sdx65-mtp.dts
+++ b/arch/arm/boot/dts/qcom-sdx65-mtp.dts
@@ -245,6 +245,17 @@
 	status = "okay";
 };
 
+&pcie_ep {
+	pinctrl-0 = <&pcie_ep_clkreq_default &pcie_ep_perst_default
+			&pcie_ep_wake_default>;
+	pinctrl-names = "default";
+
+	reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
 &pcie_phy {
 	vdda-phy-supply = <&vreg_l1b_1p2>;
 	vdda-pll-supply = <&vreg_l4b_0p88>;
@@ -277,6 +288,29 @@
 	status = "okay";
 };
 
+&tlmm {
+	pcie_ep_clkreq_default: pcie-ep-clkreq-default-state {
+		pins = "gpio56";
+		function = "pcie_clkreq";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	pcie_ep_perst_default: pcie-ep-perst-default-state {
+		pins = "gpio57";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	pcie_ep_wake_default: pcie-ep-wake-default-state {
+		pins = "gpio53";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+};
+
 &usb {
 	status = "okay";
 };
-- 
2.7.4