Re: [PATCH 3/5] dt-bindings: timer: Add Mstar MSC313e timer devicetree bindings documentation

[Rob Herring <robh@kernel.org>]

On Fri, Nov 26, 2021 at 09:21:42PM +0100, Romain Perier wrote:
> This adds the documentation for the devicetree bindings of the Mstar
> MSC313e timer driver, found from MSC313e SoCs and newer.
> 
> Signed-off-by: Romain Perier <romain.perier@gmail.com>
> ---
>  .../bindings/timer/mstar,msc313e-timer.yaml   | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml
> 
> diff --git a/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml b/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml
> new file mode 100644
> index 000000000000..f4d43e141dd0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/mstar,msc313e-timer.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mstar MSC313e Timer Device Tree Bindings
> +
> +maintainers:
> +  - Daniel Palmer <daniel@0x0f.com>
> +  - Romain Perier <romain.perier@gmail.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mstar,msc313e-timer
> +      - mstar,ssd20xd-timer
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  start-year: true

This is an rtc property. You would need to $ref rtc.yaml, but then that 
also says the node name is 'rtc'. But why do you need a start year for a 
clocksource?

> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    timer@6040 {
> +        compatible = "mstar,msc313e-timer";
> +        reg = <0x6040 0x40>;
> +        clocks = <&xtal_div2>;
> +        interrupts-extended = <&intc_fiq GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
> +    };
> +...
> -- 
> 2.33.0
> 
>