Add YAML documentation for the timer which is present on Ralink SoCs.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
---
 .../bindings/timer/ralink,rt2880-timer.yaml   | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml

diff --git a/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
new file mode 100644
index 000000000000..9a315449f73e
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/ralink,rt2880-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Timer present in Ralink family SoCs
+
+maintainers:
+  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+properties:
+  compatible:
+    const: ralink,rt2880-timer
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: timer
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    timer@100 {
+        compatible = "ralink,rt2880-timer";
+        reg = <0x100 0x20>;
+
+        clocks = <&sysc 3>;
+        clock-names = "timer";
+
+        interrupt-parent = <&intc>;
+        interrupts = <1>;
+    };
+...
-- 
2.25.1

On 20/06/2023 11:34, Sergio Paracuellos wrote:
> Add YAML documentation for the timer which is present on Ralink SoCs.

If there is going to be new version:
A nit, subject: drop second/last, redundant "documentation". The
"dt-bindings" prefix is already stating that these are bindings in
documentation.

> 
> Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
> ---
>  .../bindings/timer/ralink,rt2880-timer.yaml   | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> 
> diff --git a/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> new file mode 100644
> index 000000000000..9a315449f73e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/ralink,rt2880-timer.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Timer present in Ralink family SoCs
> +
> +maintainers:
> +  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
> +
> +properties:
> +  compatible:
> +    const: ralink,rt2880-timer
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: timer

Names matching the module name are not really helpful, so drop it,
unless any existing user needs it.

> +
> +  interrupts:
> +    maxItems: 1
> +

Best regards,
Krzysztof

Hi Krzysztof,

On Tue, Jun 20, 2023 at 11:40 AM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 20/06/2023 11:34, Sergio Paracuellos wrote:
> > Add YAML documentation for the timer which is present on Ralink SoCs.
>
> If there is going to be new version:
> A nit, subject: drop second/last, redundant "documentation". The
> "dt-bindings" prefix is already stating that these are bindings in
> documentation.

Understood, thanks.

>
> >
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
> > ---
> >  .../bindings/timer/ralink,rt2880-timer.yaml   | 49 +++++++++++++++++++
> >  1 file changed, 49 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> > new file mode 100644
> > index 000000000000..9a315449f73e
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> > @@ -0,0 +1,49 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/timer/ralink,rt2880-timer.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Timer present in Ralink family SoCs
> > +
> > +maintainers:
> > +  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
> > +
> > +properties:
> > +  compatible:
> > +    const: ralink,rt2880-timer
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  clock-names:
> > +    const: timer
>
> Names matching the module name are not really helpful, so drop it,
> unless any existing user needs it.

I am ok with dropping this. If you meant with an existing user
something that is already mainlined in the kernel tree then I would
say there is no need for this 'clock-names'. I don't know about other
places since these SoCs are pretty old and almost with nothing
documented. I am doing the effort of trying to document all the stuff
before porting some openWRT device tree files to the kernel (this
timer driver is already included in 'arch/mips/ralink' so I am
documenting already in-tree things). So I guess I should send v2
removing this?

Thanks,
    Sergio Paracuellos
>
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
>
> Best regards,
> Krzysztof
>

On 20/06/2023 11:51, Sergio Paracuellos wrote:
>>> +  reg:
>>> +    maxItems: 1
>>> +
>>> +  clocks:
>>> +    maxItems: 1
>>> +
>>> +  clock-names:
>>> +    const: timer
>>
>> Names matching the module name are not really helpful, so drop it,
>> unless any existing user needs it.
> 
> I am ok with dropping this. If you meant with an existing user
> something that is already mainlined in the kernel tree then I would

Yes.

> say there is no need for this 'clock-names'. I don't know about other
> places since these SoCs are pretty old and almost with nothing
> documented. I am doing the effort of trying to document all the stuff
> before porting some openWRT device tree files to the kernel (this
> timer driver is already included in 'arch/mips/ralink' so I am
> documenting already in-tree things). So I guess I should send v2
> removing this?

Yes, please.

Best regards,
Krzysztof