ARM: dts: qcom: sdx55-t55: Enable PCIe RC support

Enable PCIe RC support on Thundercomm T55 board.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230308082424.140224-10-manivannan.sadhasivam@linaro.org

Author: Mani-Sadhasivam

arch/arm/boot/dts/qcom-sdx55-t55.dts

@@ -242,6 +242,23 @@
 	status = "okay";
 };
 
+&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 = "okay";
 };
@@ -265,6 +282,31 @@
 	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>;