linux-kernel - Re: [PATCH 2/6] dt-bindings: timer: Add schema for realtek,otto-timer

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Date: Sat, 22 Jun 2024 13:11:27 +0100
From: Conor Dooley <conor@...nel.org>
To: Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc: tglx@...utronix.de, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, tsbogend@...ha.franken.de,
	daniel.lezcano@...aro.org, paulburton@...nel.org,
	peterz@...radead.org, mail@...ger-koblitz.de, bert@...t.com,
	john@...ozen.org, sander@...nheule.net,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-mips@...r.kernel.org, kabel@...nel.org, ericwouds@...il.com
Subject: Re: [PATCH 2/6] dt-bindings: timer: Add schema for realtek,otto-timer

On Fri, Jun 21, 2024 at 04:27:33PM +1200, Chris Packham wrote:
> Add the devicetree schema for the realtek,otto-timer present on a number
> of Realtek SoCs.
> 
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> ---
>  .../bindings/timer/realtek,otto-timer.yaml    | 54 +++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml
> 
> diff --git a/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml b/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml
> new file mode 100644
> index 000000000000..b6e85aadbc99
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/realtek,otto-timer.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Realtek Otto SoCs Timer/Counter
> +
> +description:
> +  Realtek SoCs support a number of timers/counters. These are used
> +  as a per CPU clock event generator and an overall CPU clocksource.
> +
> +maintainers:
> +  - Chris Packham <chris.packham@...iedtelesis.co.nz>
> +
> +properties:
> +  $nodename:
> +    pattern: "^timer@[0-9a-f]+$"
> +
> +  compatible:
> +    items:
> +      - enum:
> +          - realtek,rtl930x-timer
> +      - const: realtek,otto-timer
> +  reg:
> +    minItems: 5
> +    maxItems: 5

Since minitems == maxitems, can you just make this a list, and define
what they all are? Ditto interrupts.

reg:
  items:
    - foo
    - bar
    - baz

etc.


> +
> +  clocks:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 5
> +    maxItems: 5
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    timer0: timer@...0 {

The label here isn't needed FYI.

Thanks,
Conor.

> +      compatible = "realtek,rtl930x-timer", "realtek,otto-timer";
> +      reg = <0x3200 0x10>, <0x3210 0x10>, <0x3220 0x10>,
> +            <0x3230 0x10>, <0x3240 0x10>;
> +
> +      interrupt-parent = <&intc>;
> +      interrupts = <7 4>, <8 4>, <9 4>, <10 4>, <11 4>;
> +      clocks = <&lx_clk>;
> +    };
> -- 
> 2.45.2
> 

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