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dt-bindings: PCI: Convert Arm Versatile binding to DT schema
Convert the Arm Versatile PCI host binding to a DT schema. Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Andrew Murray <andrew.murray@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Rob Herring
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* ARM Versatile Platform Baseboard PCI interface
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PCI host controller found on the ARM Versatile PB board's FPGA.
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Required properties:
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- compatible: should contain "arm,versatile-pci" to identify the Versatile PCI
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controller.
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- reg: base addresses and lengths of the PCI controller. There must be 3
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entries:
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- Versatile-specific registers
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- Self Config space
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- Config space
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- #address-cells: set to <3>
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- #size-cells: set to <2>
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- device_type: set to "pci"
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- bus-range: set to <0 0xff>
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- ranges: ranges for the PCI memory and I/O regions
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- #interrupt-cells: set to <1>
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- interrupt-map-mask and interrupt-map: standard PCI properties to define
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the mapping of the PCI interface to interrupt numbers.
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Example:
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pci-controller@10001000 {
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compatible = "arm,versatile-pci";
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device_type = "pci";
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reg = <0x10001000 0x1000
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0x41000000 0x10000
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0x42000000 0x100000>;
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bus-range = <0 0xff>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x01000000 0 0x00000000 0x43000000 0 0x00010000 /* downstream I/O */
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0x02000000 0 0x50000000 0x50000000 0 0x10000000 /* non-prefetchable memory */
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0x42000000 0 0x60000000 0x60000000 0 0x10000000>; /* prefetchable memory */
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interrupt-map-mask = <0x1800 0 0 7>;
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interrupt-map = <0x1800 0 0 1 &sic 28
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0x1800 0 0 2 &sic 29
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0x1800 0 0 3 &sic 30
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0x1800 0 0 4 &sic 27
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0x1000 0 0 1 &sic 27
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0x1000 0 0 2 &sic 28
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0x1000 0 0 3 &sic 29
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0x1000 0 0 4 &sic 30
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0x0800 0 0 1 &sic 30
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0x0800 0 0 2 &sic 27
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0x0800 0 0 3 &sic 28
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0x0800 0 0 4 &sic 29
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0x0000 0 0 1 &sic 29
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0x0000 0 0 2 &sic 30
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0x0000 0 0 3 &sic 27
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0x0000 0 0 4 &sic 28>;
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};
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92
Documentation/devicetree/bindings/pci/versatile.yaml
Normal file
92
Documentation/devicetree/bindings/pci/versatile.yaml
Normal file
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@ -0,0 +1,92 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pci/versatile.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ARM Versatile Platform Baseboard PCI interface
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maintainers:
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- Rob Herring <robh@kernel.org>
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description: |+
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PCI host controller found on the ARM Versatile PB board's FPGA.
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allOf:
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- $ref: /schemas/pci/pci-bus.yaml#
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properties:
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compatible:
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const: arm,versatile-pci
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reg:
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items:
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- description: Versatile-specific registers
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- description: Self Config space
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- description: Config space
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ranges:
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maxItems: 3
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"#interrupt-cells": true
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interrupt-map:
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maxItems: 16
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interrupt-map-mask:
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items:
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- const: 0x1800
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- const: 0
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- const: 0
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- const: 7
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required:
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- compatible
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- reg
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- ranges
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- "#interrupt-cells"
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- interrupt-map
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- interrupt-map-mask
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examples:
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- |
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pci@10001000 {
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compatible = "arm,versatile-pci";
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device_type = "pci";
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reg = <0x10001000 0x1000>,
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<0x41000000 0x10000>,
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<0x42000000 0x100000>;
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bus-range = <0 0xff>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges =
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<0x01000000 0 0x00000000 0x43000000 0 0x00010000>, /* downstream I/O */
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<0x02000000 0 0x50000000 0x50000000 0 0x10000000>, /* non-prefetchable memory */
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<0x42000000 0 0x60000000 0x60000000 0 0x10000000>; /* prefetchable memory */
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interrupt-map-mask = <0x1800 0 0 7>;
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interrupt-map = <0x1800 0 0 1 &sic 28>,
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<0x1800 0 0 2 &sic 29>,
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<0x1800 0 0 3 &sic 30>,
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<0x1800 0 0 4 &sic 27>,
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<0x1000 0 0 1 &sic 27>,
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<0x1000 0 0 2 &sic 28>,
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<0x1000 0 0 3 &sic 29>,
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<0x1000 0 0 4 &sic 30>,
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<0x0800 0 0 1 &sic 30>,
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<0x0800 0 0 2 &sic 27>,
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<0x0800 0 0 3 &sic 28>,
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<0x0800 0 0 4 &sic 29>,
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<0x0000 0 0 1 &sic 29>,
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<0x0000 0 0 2 &sic 30>,
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<0x0000 0 0 3 &sic 27>,
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<0x0000 0 0 4 &sic 28>;
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};
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...
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@ -12580,7 +12580,7 @@ M: Rob Herring <robh@kernel.org>
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L: linux-pci@vger.kernel.org
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L: linux-arm-kernel@lists.infradead.org
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S: Maintained
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F: Documentation/devicetree/bindings/pci/versatile.txt
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F: Documentation/devicetree/bindings/pci/versatile.yaml
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F: drivers/pci/controller/pci-versatile.c
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PCI DRIVER FOR ARMADA 8K
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