linux-kernel - Re: [PATCH] dt-bindings: soc: xilinx: Add support for K26 rev2 SOMs

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Message-ID: <1afdcd25-d001-4523-be0d-2bf2c9e1d7a6@linaro.org>
Date: Wed, 20 Dec 2023 08:55:32 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Michal Simek <michal.simek@....com>, linux-kernel@...r.kernel.org,
 monstr@...str.eu, michal.simek@...inx.com, git@...inx.com
Cc: Conor Dooley <conor+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] dt-bindings: soc: xilinx: Add support for K26 rev2 SOMs

On 19/12/2023 15:25, Michal Simek wrote:
> Revision 2 is SW compatible with revision 1 but it is necessary to reflect
> it in model and compatible properties which are parsed by user space.
> Rev 2 has improved a power on boot reset and MIO34 shutdown glich
> improvement done via an additional filter in the GreenPak chip.
> 
> Signed-off-by: Michal Simek <michal.simek@....com>
> ---
> 
>  Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> index d4c0fe1fe435..62617e1ea74f 100644
> --- a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> +++ b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> @@ -118,6 +118,7 @@ properties:
>  
>        - description: Xilinx Kria SOMs
>          items:
> +          - const: xlnx,zynqmp-sm-k26-rev2
>            - const: xlnx,zynqmp-sm-k26-rev1
>            - const: xlnx,zynqmp-sm-k26-revB
>            - const: xlnx,zynqmp-sm-k26-revA

You are changing existing list of compatibles, so all devices with
"rev1" will fail the checks. Is it expected?

Best regards,
Krzysztof