linux-kernel - Re: [PATCH v3] dt-bindings: soc: xilinx: Add support for K26 rev2 SOMs

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Message-ID: <537eb07a-07e8-4af2-ad83-058e010f892c@amd.com>
Date: Wed, 31 Jan 2024 10:09:14 +0100
From: Michal Simek <michal.simek@....com>
To: 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>,
 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
 <devicetree@...r.kernel.org>,
 "moderated list:ARM/ZYNQ ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3] dt-bindings: soc: xilinx: Add support for K26 rev2
 SOMs



On 1/23/24 15:16, 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>
> ---
> 
> Changes in v3:
> - use allOf contains structure to avoid random chars caused by
>    additionalItems: true
> 
> Changes in v2:
> - Support older combinations
> 
> I want to support all versions we created:
> All of them:
> -rev2, -rev1, -revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> 
> rev1:
> -rev1, -revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> 
> revB:
> -revB, -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> 
> revA:
> -revA, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> 
> And also single one are permitted:
> -revB, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> -rev1, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> -rev2, "xlnx,zynqmp-smk-k26", "xlnx,zynqmp"
> 
> I didn't find a way to pretty much all the time force that there must be
> both "xlnx,zynqmp-smk-k26", "xlnx,zynqmp" that's why there is only
> requested to have xlnx,zynqmp. If you find a way how to encode it please
> let me know.
> 
> ---
>   .../bindings/soc/xilinx/xilinx.yaml           | 36 +++++++++++++------
>   1 file changed, 26 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> index d4c0fe1fe435..7c75dbb4f307 100644
> --- a/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> +++ b/Documentation/devicetree/bindings/soc/xilinx/xilinx.yaml
> @@ -117,20 +117,36 @@ properties:
>             - const: xlnx,zynqmp
>   
>         - description: Xilinx Kria SOMs
> +        minItems: 3
>           items:
> -          - const: xlnx,zynqmp-sm-k26-rev1
> -          - const: xlnx,zynqmp-sm-k26-revB
> -          - const: xlnx,zynqmp-sm-k26-revA
> -          - const: xlnx,zynqmp-sm-k26
> -          - const: xlnx,zynqmp
> +          enum:
> +            - xlnx,zynqmp-sm-k26-rev2
> +            - xlnx,zynqmp-sm-k26-rev1
> +            - xlnx,zynqmp-sm-k26-revB
> +            - xlnx,zynqmp-sm-k26-revA
> +            - xlnx,zynqmp-sm-k26
> +            - xlnx,zynqmp
> +        allOf:
> +          - contains:
> +              const: xlnx,zynqmp
> +          - contains:
> +              const: xlnx,zynqmp-sm-k26
>   
>         - description: Xilinx Kria SOMs (starter)
> +        minItems: 3
>           items:
> -          - const: xlnx,zynqmp-smk-k26-rev1
> -          - const: xlnx,zynqmp-smk-k26-revB
> -          - const: xlnx,zynqmp-smk-k26-revA
> -          - const: xlnx,zynqmp-smk-k26
> -          - const: xlnx,zynqmp
> +          enum:
> +            - xlnx,zynqmp-smk-k26-rev2
> +            - xlnx,zynqmp-smk-k26-rev1
> +            - xlnx,zynqmp-smk-k26-revB
> +            - xlnx,zynqmp-smk-k26-revA
> +            - xlnx,zynqmp-smk-k26
> +            - xlnx,zynqmp
> +        allOf:
> +          - contains:
> +              const: xlnx,zynqmp
> +          - contains:
> +              const: xlnx,zynqmp-smk-k26
>   
>         - description: AMD MicroBlaze V (QEMU)
>           items:


Applied.
M