linux-kernel - Re: [PATCH v2] dt-bindings: rtc: zynqmp: Add support for Versal/Versal NET SoCs

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Date: Wed, 6 Mar 2024 17:53:05 +0000
From: Conor Dooley <conor@...nel.org>
To: Michal Simek <michal.simek@....com>
Cc: linux-kernel@...r.kernel.org, monstr@...str.eu, michal.simek@...inx.com,
	git@...inx.com, Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"moderated list:ARM/ZYNQ ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>,
	"open list:REAL TIME CLOCK (RTC) SUBSYSTEM" <linux-rtc@...r.kernel.org>
Subject: Re: [PATCH v2] dt-bindings: rtc: zynqmp: Add support for
 Versal/Versal NET SoCs

On Wed, Mar 06, 2024 at 01:36:34PM +0100, Michal Simek wrote:
> Add support for Versal and Versal NET SoCs. Both of them should use the
> same IP core but differences can be in integration part that's why create
> separate compatible strings.
> 
> Also describe optional power-domains property. It is optional because power
> domain doesn't need to be onwed by non secure firmware hence no access to
> control it via any driver.
> 
> Signed-off-by: Michal Simek <michal.simek@....com>
> ---
> 
> Changes in v2:
> - Change subject
> - Add compatible string for versal and versal NET
> - Update commit message to reflect why power domain is optional.
> 
>  .../devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml          | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
> index d1f5eb996dba..5652df8ec121 100644
> --- a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
> +++ b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
> @@ -18,7 +18,10 @@ allOf:
>  
>  properties:
>    compatible:
> -    const: xlnx,zynqmp-rtc
> +    enum:
> +      - xlnx,versal-rtc
> +      - xlnx,versal-net-rtc
> +      - xlnx,zynqmp-rtc

You sure chief? I don't see a driver patch alongside this adding these
new versal compatibles there, so should these versal compatibles not
fall back to the zynqmp one?

Thanks,
Conor.

>  
>    reg:
>      maxItems: 1
> @@ -48,6 +51,9 @@ properties:
>      default: 0x198233
>      deprecated: true
>  
> +  power-domains:
> +    maxItems: 1
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.36.1
> 

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