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SubjectRe: [PATCH v2 1/4] dt-bindings: net: Add bindings for AX88796C SPI Ethernet Adapter
On Sat, Oct 03, 2020 at 12:09:55PM +0200, Krzysztof Kozlowski wrote:
> On Fri, 2 Oct 2020 at 21:22, Łukasz Stelmach <l.stelmach@samsung.com> wrote:
> >
> > Add bindings for AX88796C SPI Ethernet Adapter.
> >
> > Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
> > ---
> > .../bindings/net/asix,ax88796c-spi.yaml | 76 +++++++++++++++++++
> > .../devicetree/bindings/vendor-prefixes.yaml | 2 +
> > 2 files changed, 78 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/net/asix,ax88796c-spi.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/net/asix,ax88796c-spi.yaml b/Documentation/devicetree/bindings/net/asix,ax88796c-spi.yaml
> > new file mode 100644
> > index 000000000000..50a488d59dbf
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/net/asix,ax88796c-spi.yaml
> > @@ -0,0 +1,76 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/net/asix,ax88796c-spi.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: ASIX AX88796C SPI Ethernet Adapter
> > +
> > +allOf:
> > + - $ref: ethernet-controller.yaml#
>
> Order of top-level entries please:
> 1. id, schema
> 2. title
> 3. maintainers
> 4. description
> and then allOf. See example-schema.yaml.
>
> > +
> > +description: |
> > + ASIX AX88796C is an Ethernet controller with a built in PHY. This
> > + describes SPI mode of the chip.
> > +
> > + The node for this driver must be a child node of a SPI controller, hence
> > + all mandatory properties described in ../spi/spi-bus.txt must be specified.

Did you read spi-bus.txt?

> > +
> > +maintainers:
> > + - Łukasz Stelmach <l.stelmach@samsung.com>
> > +
> > +properties:
> > + compatible:
> > + const: asix,ax99796c-spi

'spi' is implied by the bus the device is on, so drop.

> > +
> > + reg:
> > + description:
> > + SPI device address.
>
> Skip description, it's trivial.
>
> > + maxItems: 1
> > +
> > + spi-max-frequency:
> > + maximum: 40000000
> > +
> > + interrupts:
> > + description:
> > + GPIO interrupt to which the chip is connected.
>
> Skip the description. It's trivial and might be not accurate (does not
> have to be a GPIO).
>
> > + maxItems: 1
> > +
> > + interrupt-parrent:

Typo. But you don't need to list interrupt-parent.

> > + description:
> > + A phandle of an interrupt controller.
>
> Skip description.

>
> > + maxItems: 1
> > +
> > + reset-gpios:
> > + description:
> > + A GPIO line handling reset of the chip. As the line is active low,
> > + it should be marked GPIO_ACTIVE_LOW.
> > + maxItems: 1
> > +
> > + local-mac-address: true
> > +
> > + mac-address: true
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - spi-max-frequency
> > + - interrupts
> > + - interrupt-parrent
> > + - reset-gpios
>
> Additional properties false.
>
> > +
> > +examples:
> > + # Artik5 eval board
> > + - |
> > + ax88796c@0 {

ethernet@0

> > + compatible = "asix,ax88796c";
> > + local-mac-address = [00 00 00 00 00 00]; /* Filled in by a bootloader */
> > + interrupt-parent = <&gpx2>;
> > + interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> > + spi-max-frequency = <40000000>;
> > + reg = <0x0>;
> > + reset-gpios = <&gpe0 2 GPIO_ACTIVE_LOW>;
> > + controller-data {

Not documented.

> > + samsung,spi-feedback-delay = <2>;
> > + };
> > + };
> > diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > index 2baee2c817c1..5ce5c4a43735 100644
> > --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> > @@ -117,6 +117,8 @@ patternProperties:
> > description: Asahi Kasei Corp.
> > "^asc,.*":
> > description: All Sensors Corporation
> > + "^asix,.*":
> > + description: ASIX Electronics Corporation
>
> Separate patch please.
>
> Best regards,
> Krzysztof
>
> > "^aspeed,.*":
> > description: ASPEED Technology Inc.
> > "^asus,.*":
> > --
> > 2.26.2
> >

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