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dt-bindings: PCI: Add Intel Keem Bay PCIe controller

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Document DT bindings for PCIe controller found on Intel Keem Bay SoC.

Link: https://lore.kernel.org/r/20210805211010.29484-2-srikanth.thokala@intel.com
Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
Signed-off-by: Srikanth Thokala <srikanth.thokala@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Srikanth Thokala 2021-08-06 02:40:09 +05:30 committed by Lorenzo Pieralisi
parent e73f0f0ee7
commit 33d2f8e4ff
2 changed files with 166 additions and 0 deletions
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69
Documentation/devicetree/bindings/pci/intel,keembay-pcie-ep.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/pci/intel,keembay-pcie-ep.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Intel Keem Bay PCIe controller Endpoint mode
maintainers:
- Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
- Srikanth Thokala <srikanth.thokala@intel.com>
properties:
compatible:
const: intel,keembay-pcie-ep
reg:
maxItems: 5
reg-names:
items:
- const: dbi
- const: dbi2
- const: atu
- const: addr_space
- const: apb
interrupts:
maxItems: 4
interrupt-names:
items:
- const: pcie
- const: pcie_ev
- const: pcie_err
- const: pcie_mem_access
num-lanes:
description: Number of lanes to use.
enum: [ 1, 2 ]
required:
- compatible
- reg
- reg-names
- interrupts
- interrupt-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
pcie-ep@37000000 {
compatible = "intel,keembay-pcie-ep";
reg = <0x37000000 0x00001000>,
<0x37100000 0x00001000>,
<0x37300000 0x00001000>,
<0x36000000 0x01000000>,
<0x37800000 0x00000200>;
reg-names = "dbi", "dbi2", "atu", "addr_space", "apb";
interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 108 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "pcie", "pcie_ev", "pcie_err", "pcie_mem_access";
num-lanes = <2>;
};

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Documentation/devicetree/bindings/pci/intel,keembay-pcie.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/pci/intel,keembay-pcie.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Intel Keem Bay PCIe controller Root Complex mode
maintainers:
- Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
- Srikanth Thokala <srikanth.thokala@intel.com>
allOf:
- $ref: /schemas/pci/pci-bus.yaml#
properties:
compatible:
const: intel,keembay-pcie
ranges:
maxItems: 1
reset-gpios:
maxItems: 1
reg:
maxItems: 4
reg-names:
items:
- const: dbi
- const: atu
- const: config
- const: apb
clocks:
maxItems: 2
clock-names:
items:
- const: master
- const: aux
interrupts:
maxItems: 3
interrupt-names:
items:
- const: pcie
- const: pcie_ev
- const: pcie_err
num-lanes:
description: Number of lanes to use.
enum: [ 1, 2 ]
required:
- compatible
- reg
- reg-names
- ranges
- clocks
- clock-names
- interrupts
- interrupt-names
- reset-gpios
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
#define KEEM_BAY_A53_PCIE
#define KEEM_BAY_A53_AUX_PCIE
pcie@37000000 {
compatible = "intel,keembay-pcie";
reg = <0x37000000 0x00001000>,
<0x37300000 0x00001000>,
<0x36e00000 0x00200000>,
<0x37800000 0x00000200>;
reg-names = "dbi", "atu", "config", "apb";
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x02000000 0 0x36000000 0x36000000 0 0x00e00000>;
interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "pcie", "pcie_ev", "pcie_err";
clocks = <&scmi_clk KEEM_BAY_A53_PCIE>,
<&scmi_clk KEEM_BAY_A53_AUX_PCIE>;
clock-names = "master", "aux";
reset-gpios = <&pca2 9 GPIO_ACTIVE_LOW>;
num-lanes = <2>;
};