Commit e6f98b29 authored by Jim Quinlan's avatar Jim Quinlan Committed by Lorenzo Pieralisi
Browse files

dt-bindings: PCI: Add bindings for more Brcmstb chips 

- Add compatible strings for three more Broadcom STB chips: 7278, 7216,
  7211 (STB version of RPi4).
- Add new property 'brcm,scb-sizes'.
- Add new property 'resets'.
- Add new property 'reset-names' for 7216 only.
- Allow 'ranges' and 'dma-ranges' to have more than one item and update
  the example to show this.

Link: https://lore.kernel.org/r/20200911175232.19016-3-james.quinlan@broadcom.com


Signed-off-by: default avatarJim Quinlan <jquinlan@broadcom.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
parent b927ad34

Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml

+49 −7
Original line number Diff line number Diff line
@@ -9,12 +9,15 @@ title: Brcmstb PCIe Host Controller Device Tree Bindings 
maintainers:

  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>



allOf:

  - $ref: /schemas/pci/pci-bus.yaml#



properties:

  compatible:

    const: brcm,bcm2711-pcie # The Raspberry Pi 4

    items:

      - enum:

          - brcm,bcm2711-pcie # The Raspberry Pi 4

          - brcm,bcm7211-pcie # Broadcom STB version of RPi4

          - brcm,bcm7278-pcie # Broadcom 7278 Arm

          - brcm,bcm7216-pcie # Broadcom 7216 Arm

          - brcm,bcm7445-pcie # Broadcom 7445 Arm



  reg:

    maxItems: 1
@@ -34,10 +37,12 @@ properties: 
      - const: msi



  ranges:

    maxItems: 1

    minItems: 1

    maxItems: 4



  dma-ranges:

    maxItems: 1

    minItems: 1

    maxItems: 6



  clocks:

    maxItems: 1
@@ -58,8 +63,31 @@ properties: 


  aspm-no-l0s: true



  resets:

    description: for "brcm,bcm7216-pcie", must be a valid reset

      phandle pointing to the RESCAL reset controller provider node.

    $ref: "/schemas/types.yaml#/definitions/phandle"



  reset-names:

    items:

      - const: rescal



  brcm,scb-sizes:

    description: u64 giving the 64bit PCIe memory

      viewport size of a memory controller.  There may be up to

      three controllers, and each size must be a power of two

      with a size greater or equal to the amount of memory the

      controller supports.  Note that each memory controller

      may have two component regions -- base and extended -- so

      this information cannot be deduced from the dma-ranges.

    $ref: /schemas/types.yaml#/definitions/uint64-array

    items:

      minItems: 1

      maxItems: 3



required:

  - reg

  - ranges

  - dma-ranges

  - "#interrupt-cells"

  - interrupts
@@ -68,6 +96,18 @@ required: 
  - interrupt-map

  - msi-controller



allOf:

  - $ref: /schemas/pci/pci-bus.yaml#

  - if:

      properties:

        compatible:

          contains:

            const: brcm,bcm7216-pcie

    then:

      required:

        - resets

        - reset-names



unevaluatedProperties: false



examples:
@@ -93,7 +133,9 @@ examples: 
                    msi-parent = <&pcie0>;

                    msi-controller;

                    ranges = <0x02000000 0x0 0xf8000000 0x6 0x00000000 0x0 0x04000000>;

                    dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>;

                    dma-ranges = <0x42000000 0x1 0x00000000 0x0 0x40000000 0x0 0x80000000>,

                                 <0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;

                    brcm,enable-ssc;

                    brcm,scb-sizes =  <0x0000000080000000 0x0000000080000000>;

            };

    };