arm64: dts: qcom: sa8775p: Add ep pcie1 controller node

Add ep pcie dtsi node for pcie1 controller found on sa8775p platform.
It supports gen4 and x4 link width. Limiting the speed to Gen3 due to
stability issue with Gen4.
Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
Link: https://lore.kernel.org/r/1714494089-7917-3-git-send-email-quic_msarkar@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sa8775p.dtsi

@@ -3845,6 +3845,53 @@ pcie@0 {
 		};
 	};
 
+	pcie1_ep: pcie-ep@1c10000 {
+		compatible = "qcom,sa8775p-pcie-ep";
+		reg = <0x0 0x01c10000 0x0 0x3000>,
+		      <0x0 0x60000000 0x0 0xf20>,
+		      <0x0 0x60000f20 0x0 0xa8>,
+		      <0x0 0x60001000 0x0 0x4000>,
+		      <0x0 0x60200000 0x0 0x100000>,
+		      <0x0 0x01c13000 0x0 0x1000>,
+		      <0x0 0x60005000 0x0 0x2000>;
+		reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
+			    "mmio", "dma";
+
+		clocks = <&gcc GCC_PCIE_1_AUX_CLK>,
+			 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
+			 <&gcc GCC_PCIE_1_MSTR_AXI_CLK>,
+			 <&gcc GCC_PCIE_1_SLV_AXI_CLK>,
+			 <&gcc GCC_PCIE_1_SLV_Q2A_AXI_CLK>;
+
+		clock-names = "aux",
+			      "cfg",
+			      "bus_master",
+			      "bus_slave",
+			      "slave_q2a";
+
+		interrupts = <GIC_SPI 518 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 474 IRQ_TYPE_LEVEL_HIGH>;
+
+		interrupt-names = "global", "doorbell", "dma";
+
+		interconnects = <&pcie_anoc MASTER_PCIE_1 0 &mc_virt SLAVE_EBI1 0>,
+				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_1 0>;
+		interconnect-names = "pcie-mem", "cpu-pcie";
+
+		dma-coherent;
+		iommus = <&pcie_smmu 0x80 0x7f>;
+		resets = <&gcc GCC_PCIE_1_BCR>;
+		reset-names = "core";
+		power-domains = <&gcc PCIE_1_GDSC>;
+		phys = <&pcie1_phy>;
+		phy-names = "pciephy";
+		max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */
+		num-lanes = <4>;
+
+		status = "disabled";
+	};
+
 	pcie1_phy: phy@1c14000 {
 		compatible = "qcom,sa8775p-qmp-gen4x4-pcie-phy";
 		reg = <0x0 0x1c14000 0x0 0x4000>;