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dt-bindings: PCI: Convert fsl,mpc83xx-pcie to YAML
Formalise the binding for the PCI controllers in the Freescale MPC8xxx chip family. Information about PCI-X-specific properties was taken from fsl,pci.txt. The examples were taken from mpc8315erdb.dts and xpedite5200_xmon.dts. Signed-off-by: J. Neuschäfer <j.ne@posteo.net> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250220-ppcyaml-pci-v3-1-ca94a4f62a85@posteo.net Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
This commit is contained in:
J. Neuschäfer
committed by
Krzysztof Wilczyński
Krzysztof Wilczyński
parent
f67d04b183
commit
2a49560bd5
113
Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml
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113
Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml
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@@ -0,0 +1,113 @@
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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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$id: http://devicetree.org/schemas/pci/fsl,mpc8xxx-pci.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Freescale MPC83xx PCI/PCI-X/PCIe controllers
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description:
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Binding for the PCI/PCI-X/PCIe host bridges on MPC8xxx SoCs
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maintainers:
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- J. Neuschäfer <j.neuschaefer@gmx.net>
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allOf:
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- $ref: /schemas/pci/pci-host-bridge.yaml#
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properties:
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compatible:
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oneOf:
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- enum:
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- fsl,mpc8314-pcie
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- fsl,mpc8349-pci
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- fsl,mpc8540-pci
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- fsl,mpc8548-pcie
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- fsl,mpc8641-pcie
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- items:
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- enum:
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- fsl,mpc8308-pcie
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- fsl,mpc8315-pcie
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- fsl,mpc8377-pcie
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- fsl,mpc8378-pcie
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- const: fsl,mpc8314-pcie
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- items:
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- const: fsl,mpc8360-pci
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- const: fsl,mpc8349-pci
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- items:
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- const: fsl,mpc8540-pcix
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- const: fsl,mpc8540-pci
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reg:
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minItems: 1
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items:
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- description: internal registers
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- description: config space access registers
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clock-frequency: true
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interrupts:
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items:
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- description: Consolidated PCI interrupt
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fsl,pci-agent-force-enum:
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type: boolean
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description:
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Typically any Freescale PCI-X bridge hardware strapped into Agent mode is
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prevented from enumerating the bus. The PrPMC form-factor requires all
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mezzanines to be PCI-X Agents, but one per system may still enumerate the
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bus.
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This property allows a PCI-X bridge to be used for bus enumeration
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despite being strapped into Agent mode.
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required:
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- reg
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- compatible
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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pcie@e0009000 {
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compatible = "fsl,mpc8315-pcie", "fsl,mpc8314-pcie";
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reg = <0xe0009000 0x00001000>;
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ranges = <0x02000000 0 0xa0000000 0xa0000000 0 0x10000000
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0x01000000 0 0x00000000 0xb1000000 0 0x00800000>;
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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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device_type = "pci";
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bus-range = <0 255>;
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interrupt-map-mask = <0xf800 0 0 7>;
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interrupt-map = <0 0 0 1 &ipic 1 IRQ_TYPE_LEVEL_LOW
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0 0 0 2 &ipic 1 IRQ_TYPE_LEVEL_LOW
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0 0 0 3 &ipic 1 IRQ_TYPE_LEVEL_LOW
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0 0 0 4 &ipic 1 IRQ_TYPE_LEVEL_LOW>;
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clock-frequency = <0>;
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};
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- |
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pci@ef008000 {
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compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
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reg = <0xef008000 0x1000>;
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ranges = <0x02000000 0 0x80000000 0x80000000 0 0x20000000
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0x01000000 0 0x00000000 0xd0000000 0 0x01000000>;
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#interrupt-cells = <1>;
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#size-cells = <2>;
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#address-cells = <3>;
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device_type = "pci";
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clock-frequency = <33333333>;
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interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
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interrupt-map = </* IDSEL */
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0xe000 0 0 1 &mpic 2 1
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0xe000 0 0 2 &mpic 3 1>;
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interrupts-extended = <&mpic 24 2>;
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bus-range = <0 0>;
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fsl,pci-agent-force-enum;
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};
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...
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@@ -1,27 +0,0 @@
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* Bus Enumeration by Freescale PCI-X Agent
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Typically any Freescale PCI-X bridge hardware strapped into Agent mode
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is prevented from enumerating the bus. The PrPMC form-factor requires
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all mezzanines to be PCI-X Agents, but one per system may still
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enumerate the bus.
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The property defined below will allow a PCI-X bridge to be used for bus
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enumeration despite being strapped into Agent mode.
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Required properties:
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- fsl,pci-agent-force-enum : There is no value associated with this
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property. The property itself is treated as a boolean.
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Example:
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/* PCI-X bridge known to be PrPMC Monarch */
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pci0: pci@ef008000 {
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fsl,pci-agent-force-enum;
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#interrupt-cells = <1>;
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#size-cells = <2>;
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#address-cells = <3>;
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compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
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device_type = "pci";
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...
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...
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};
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