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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/qcom,pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm PCIe Endpoint Controller
maintainers:
- Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
properties:
compatible:
enum:
- qcom,sdx55-pcie-ep
- qcom,sm8450-pcie-ep
reg:
items:
- description: Qualcomm-specific PARF configuration registers
- description: DesignWare PCIe registers
- description: External local bus interface registers
- description: Address Translation Unit (ATU) registers
- description: Memory region used to map remote RC address space
- description: BAR memory region
reg-names:
items:
- const: parf
- const: dbi
- const: elbi
- const: atu
- const: addr_space
- const: mmio
clocks:
minItems: 7
maxItems: 8
clock-names:
minItems: 7
maxItems: 8
qcom,perst-regs:
description: Reference to a syscon representing TCSR followed by the two
offsets within syscon for Perst enable and Perst separation
enable registers
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: Syscon to TCSR system registers
- description: Perst enable offset
- description: Perst separation enable offset
interrupts:
items:
- description: PCIe Global interrupt
- description: PCIe Doorbell interrupt
interrupt-names:
items:
- const: global
- const: doorbell
reset-gpios:
description: GPIO used as PERST# input signal
maxItems: 1
wake-gpios:
description: GPIO used as WAKE# output signal
maxItems: 1
resets:
maxItems: 1
reset-names:
const: core
power-domains:
maxItems: 1
phys:
maxItems: 1
phy-names:
const: pciephy
num-lanes:
default: 2
required:
- compatible
- reg
- reg-names
- clocks
- clock-names
- interrupts
- interrupt-names
- reset-gpios
- resets
- reset-names
- power-domains
allOf:
- $ref: pci-ep.yaml#
- if:
properties:
compatible:
contains:
enum:
- qcom,sdx55-pcie-ep
then:
properties:
clocks:
items:
- description: PCIe Auxiliary clock
- description: PCIe CFG AHB clock
- description: PCIe Master AXI clock
- description: PCIe Slave AXI clock
- description: PCIe Slave Q2A AXI clock
- description: PCIe Sleep clock
- description: PCIe Reference clock
clock-names:
items:
- const: aux
- const: cfg
- const: bus_master
- const: bus_slave
- const: slave_q2a
- const: sleep
- const: ref
- if:
properties:
compatible:
contains:
enum:
- qcom,sm8450-pcie-ep
then:
properties:
clocks:
items:
- description: PCIe Auxiliary clock
- description: PCIe CFG AHB clock
- description: PCIe Master AXI clock
- description: PCIe Slave AXI clock
- description: PCIe Slave Q2A AXI clock
- description: PCIe Reference clock
- description: PCIe DDRSS SF TBU clock
- description: PCIe AGGRE NOC AXI clock
clock-names:
items:
- const: aux
- const: cfg
- const: bus_master
- const: bus_slave
- const: slave_q2a
- const: ref
- const: ddrss_sf_tbu
- const: aggre_noc_axi
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/qcom,gcc-sdx55.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
pcie_ep: pcie-ep@1c00000 {
compatible = "qcom,sdx55-pcie-ep";
reg = <0x01c00000 0x3000>,
<0x40000000 0xf1d>,
<0x40000f20 0xc8>,
<0x40001000 0x1000>,
<0x40002000 0x1000>,
<0x01c03000 0x3000>;
reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
"mmio";
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_CLK>;
clock-names = "aux", "cfg", "bus_master", "bus_slave",
"slave_q2a", "sleep", "ref";
qcom,perst-regs = <&tcsr 0xb258 0xb270>;
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>;
};
|
