Re: [PATCH 3/3] PCI: apple: Add support for optional PWREN GPIO

[Hector Martin]

On 02/05/2022 19.31, Marc Zyngier wrote:
> On Mon, 02 May 2022 10:38:32 +0100,
> Hector Martin <marcan@xxxxxxxxx> wrote:
>>
>> WiFi and SD card devices on M1 Macs have a separate power enable GPIO.
>> Add support for this to the PCIe controller. This is modeled after how
>> pcie-fu740 does it.
> 
> Please update the DT binding to reflect this as an optional property.

That's a bit more involved than you might think, considering we aren't
checking *any* properties in the root port child nodes right now :-)

How's this?

patternProperties:
  "^pci@":
    $ref: /schemas/pci/pci-bus.yaml#
    type: object
    description: A single PCI root port

    properties:
      reg:
        maxItems: 1

      pwren-gpios:
        description: Optional GPIO to power on the device
        maxItems: 1

    required:
      - reset-gpios
      - interrupt-controller
      - "#interrupt-cells"
      - interrupt-map-mask
      - interrupt-map

-- 
Hector Martin (marcan@xxxxxxxxx)
Public Key: https://mrcn.st/pub