Re: [PATCH v5 net-next 10/10] dt-bindings: net: korina: Add DT bindings for IDT 79RC3243x SoCs

[Sergei Shtylyov]

On 16.04.2021 16:35, Thomas Bogendoerfer wrote:
> On Fri, Apr 16, 2021 at 12:29:46PM +0300, Sergei Shtylyov wrote:
> > On 16.04.2021 11:52, Thomas Bogendoerfer wrote:
> >
> > > Add device tree bindings for ethernet controller integrated into
> > > IDT 79RC3243x SoCs.
> > >
> > > Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> > > ---
> > >    .../bindings/net/idt,3243x-emac.yaml          | 74 +++++++++++++++++++
> > >    1 file changed, 74 insertions(+)
> > >    create mode 100644 Documentation/devicetree/bindings/net/idt,3243x-emac.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml b/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml
> > > new file mode 100644
> > > index 000000000000..3697af5cb66f
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/net/idt,3243x-emac.yaml
> > > @@ -0,0 +1,74 @@
> > > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/net/idt,3243x-emac.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: IDT 79rc3243x Ethernet controller
> > > +
> > > +description: Ethernet controller integrated into IDT 79RC3243x family SoCs
> > > +
> > > +maintainers:
> > > +  - Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> > > +
> > > +allOf:
> > > +  - $ref: ethernet-controller.yaml#
> > > +
> > > +properties:
> > > +  compatible:
> > > +    const: idt,3243x-emac
> > > +
> > > +  reg:
> > > +    maxItems: 3
> > > +
> > > +  reg-names:
> > > +    items:
> > > +      - const: korina_regs
> > > +      - const: korina_dma_rx
> > > +      - const: korina_dma_tx
> > > +
> > > +  interrupts:
> > > +    items:
> > > +      - description: RX interrupt
> > > +      - description: TX interrupt
> > > +
> > > +  interrupt-names:
> > > +    items:
> > > +      - const: korina_rx
> > > +      - const: korina_tx
> > > +
> > > +  clocks:
> > > +    maxItems: 1
> > > +
> > > +  clock-names:
> > > +    items:
> > > +      - const: mdioclk
> > > +
> > > +required:
> > > +  - compatible
> > > +  - reg
> > > +  - reg-names
> > > +  - interrupts
> > > +  - interrupt-names
> > > +
> > > +additionalProperties: false
> > > +
> > > +examples:
> > > +  - |
> > > +
> > > +    ethernet@60000 {
> > > +        compatible = "idt,3243x-emac";
> > > +
> > > +        reg = <0x60000 0x10000>,
> > > +              <0x40000 0x14>,
> > > +              <0x40014 0x14>;
> > > +        reg-names = "korina_regs",
> > > +                    "korina_dma_rx",
> > > +                    "korina_dma_tx";
> > > +
> > > +        interrupts-extended = <&rcpic3 0>, <&rcpic3 1>;
> >
> >     You use this prop, yet don't describe it?
>
> that's just interrupt-parent and interrupts in one statement. And since

   I know. :-) Yet you don't mention it, making the "interrupts" prop 
mandatory instead. And as both interrupt parents are the same here, it does 
not even seem justified...

> make dt_binding_check didn't complained I thought that's good this way.
> Rob, do I need to describe interrupts-extended as well ?
>
> I could change that to interrupt-parent/interrupts as the driver no
> longer uses dma under/overrun interrupts, which have a different
> interrupt-parent.

   In DT, we describe the hardware,  not the driver's capabilities.

> Thomas.

MBR, Sergei