Re: [PATCH 1/4] dt-bindings: timer: allwinner,sun5i-a13-hstimer: add H616 and T113-S3

[Andre Przywara <andre.przywara@arm.com>]

On Sun, 19 Apr 2026 14:46:07 +0200
Michal Piekos <michal.piekos@mmpsystems.pl> wrote:

> H616 is compatible with the existing sun5i binding, but
> require its own compatible string to differentiate register offsets.

Just a nit: if the register offsets are different, then it's not
compatible, not even with the binding. So just say something like "they
are similar, but with different register offsets".

> T113-S3 uses same offsets as H616.

So it looks like (somewhat naturally) this is true for D1 as well? And
since that SoC was the first, we use "sun20i-d1" as the compatible
string prefix for this SoC's devices. I think we should follow suit
here and name that similarly.

> 
> Add allwinner,sun50i-h616-hstimer
> Add allwinner,sun8i-t113s-hstimer with fallback to
> allwinner,sun50i-h616-hstimer
> Extend schema condition for interrupts to cover H616 compatible variant.
> 
> Signed-off-by: Michal Piekos <michal.piekos@mmpsystems.pl>
> ---
>  .../devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml    | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml b/Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml
> index f1853daec2f9..bb60a85dc34b 100644
> --- a/Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml
> +++ b/Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml
> @@ -15,9 +15,13 @@ properties:
>      oneOf:
>        - const: allwinner,sun5i-a13-hstimer
>        - const: allwinner,sun7i-a20-hstimer
> +      - const: allwinner,sun50i-h616-hstimer
>        - items:
>            - const: allwinner,sun6i-a31-hstimer
>            - const: allwinner,sun7i-a20-hstimer
> +      - items:
> +          - const: allwinner,sun8i-t113s-hstimer
> +          - const: allwinner,sun50i-h616-hstimer
>  
>    reg:
>      maxItems: 1
> @@ -45,7 +49,9 @@ required:
>  if:
>    properties:
>      compatible:
> -      const: allwinner,sun5i-a13-hstimer
> +      enum:
> +        - allwinner,sun5i-a13-hstimer
> +        - allwinner,sun50i-h616-hstimer

IIUC this just matches the H616, but wouldn't match the T113/D1? And
there is some construct with "contains" to match for fallback
compatibles?

Cheers,
Andre
>  
>  then:
>    properties:
>