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

Sergei Shtylyov
2021-04-17T10:19:37Z

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@alpha.franken.de>
>>> ---
>>> .../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@alpha.franken.de>
>>> +
>>> +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