linux-kernel - [PATCH 4/6] ARM: dts: qcom: sdx65: Add support for PCIe EP

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Date:   Mon,  6 Mar 2023 10:55:00 +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 4/6] ARM: dts: qcom: sdx65: Add support for PCIe EP

Add support for PCIe Endpoint controller on the Qualcomm SDX65 platform.

Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
---
 arch/arm/boot/dts/qcom-sdx65.dtsi | 44 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx65.dtsi b/arch/arm/boot/dts/qcom-sdx65.dtsi
index 246290d..93ea94e 100644
--- a/arch/arm/boot/dts/qcom-sdx65.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx65.dtsi
@@ -11,6 +11,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/soc/qcom,rpmh-rsc.h>
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	#address-cells = <1>;
@@ -292,6 +293,44 @@
 			status = "disabled";
 		};
 
+		pcie_ep: pcie-ep@...0000 {
+			compatible = "qcom,sdx65-pcie-ep", "qcom,sdx55-pcie-ep";
+			reg = <0x01c00000 0x3000>,
+				  <0x40000000 0xf1d>,
+				  <0x40000f20 0xa8>,
+				  <0x40001000 0x1000>,
+				  <0x40200000 0x100000>,
+				  <0x01c03000 0x3000>;
+			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
+						"mmio";
+
+			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
+
+			clocks = <&gcc GCC_PCIE_AUX_CLK>,
+					 <&gcc GCC_PCIE_CFG_AHB_CLK>,
+					 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
+					 <&gcc GCC_PCIE_SLV_AXI_CLK>,
+					 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
+					 <&gcc GCC_PCIE_SLEEP_CLK>,
+					 <&gcc GCC_PCIE_0_CLKREF_EN>;
+			clock-names = "aux", "cfg", "bus_master", "bus_slave",
+							"slave_q2a", "sleep", "ref";
+
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
+						 <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "global", "doorbell";
+			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
+			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
+			resets = <&gcc GCC_PCIE_BCR>;
+			reset-names = "core";
+			power-domains = <&gcc PCIE_GDSC>;
+			phys = <&pcie0_lane>;
+			phy-names = "pciephy";
+			max-link-speed = <3>;
+			num-lanes = <2>;
+			status = "disabled";
+		};
+
 		pcie0_phy: phy@...7000 {
 			compatible = "qcom,sdx65-qmp-pcie-phy";
 			reg = <0x01c07000 0x1e4>;
@@ -330,6 +369,11 @@
 			#hwlock-cells = <1>;
 		};
 
+		tcsr: syscon@...b000 {
+			compatible = "qcom,sdx65-tcsr", "syscon";
+			reg = <0x01fc0000 0x1000>;
+		};
+
 		remoteproc_mpss: remoteproc@...0000 {
 			compatible = "qcom,sdx55-mpss-pas";
 			reg = <0x04080000 0x4040>;
-- 
2.7.4