linux-kernel - [PATCH v2 09/13] ARM: dts: qcom: sdx55-t55: Enable PCIe RC support

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Date:   Fri, 24 Feb 2023 16:29:02 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     andersson@...nel.org, lpieralisi@...nel.org, robh@...nel.org,
        kw@...ux.com, krzysztof.kozlowski+dt@...aro.org, vkoul@...nel.org
Cc:     konrad.dybcio@...aro.org, bhelgaas@...gle.com, kishon@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v2 09/13] ARM: dts: qcom: sdx55-t55: Enable PCIe RC support

Enable PCIe RC support on Thundercomm T55 board.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm/boot/dts/qcom-sdx55-t55.dts | 42 ++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx55-t55.dts b/arch/arm/boot/dts/qcom-sdx55-t55.dts
index 7ed8feb99afb..6339af791b0b 100644
--- a/arch/arm/boot/dts/qcom-sdx55-t55.dts
+++ b/arch/arm/boot/dts/qcom-sdx55-t55.dts
@@ -242,6 +242,23 @@ &ipa {
 	memory-region = <&ipa_fw_mem>;
 };
 
+&pcie_phy {
+	vdda-phy-supply = <&vreg_l1e_bb_1p2>;
+	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
+
+	status = "okay";
+};
+
+&pcie_rc {
+	perst-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 53 GPIO_ACTIVE_HIGH>;
+
+	pinctrl-0 = <&pcie_default>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
 &qpic_bam {
 	status = "ok";
 };
@@ -265,6 +282,31 @@ &remoteproc_mpss {
 	memory-region = <&mpss_adsp_mem>;
 };
 
+&tlmm {
+	pcie_default: pcie-default-state {
+		clkreq-pins {
+			pins = "gpio56";
+			function = "pcie_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-pins {
+			pins = "gpio57";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-pins {
+		       pins = "gpio53";
+		       function = "gpio";
+		       drive-strength = <2>;
+		       bias-pull-up;
+	       };
+	};
+};
+
 &usb_hsphy {
 	status = "okay";
 	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
-- 
2.25.1