[PATCH v2 6/9] dt-bindings: rtc: add refclk to mpfs-rtc

[Krzysztof Kozlowski]

On 11/04/2022 10:59, Conor Dooley wrote:
> The rtc on PolarFire SoC does not use the AHB clock as its reference
> frequency, but rather a 1 MHz refclk that it shares with MTIMER. Add
> this second clock to the binding as a required property.
> 
> Fixes: 4cbcc0d7b397 ("dt-bindings: rtc: add bindings for microchip mpfs rtc")
> Reviewed-by: Daire McNamara <daire.mcnamara at microchip.com>
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---
>  .../bindings/rtc/microchip,mfps-rtc.yaml           | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml b/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml
> index a2e984ea3553..1ffd97dbe6b9 100644
> --- a/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml
> +++ b/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml
> @@ -31,11 +31,18 @@ properties:
>            to that of the RTC's count register.
>  
>    clocks:
> -    maxItems: 1
> +    items:
> +      - description: |
> +          AHB clock
> +      - description: |
> +          Reference clock: divided by the prescaler to create a time-based strobe (typically 1 Hz)
> +          for the calendar counter. By default, the rtc on the PolarFire SoC shares it's reference
> +          with MTIMER so this will be a 1 MHz clock.

Please wrap it at 80-column, it is still preferred coding style. The
same in your patch 4/9.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>


Best regards,
Krzysztof