linux-kernel - Re: [PATCH V2 3/5] arm64: zynqmp: Add ZynqnMP nvmem nodes

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Date:   Thu, 19 Oct 2023 11:27:41 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Praveen Teja Kundanala <praveen.teja.kundanala@....com>,
        srinivas.kandagatla@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        michal.simek@....com, praveent@....com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 3/5] arm64: zynqmp: Add ZynqnMP nvmem nodes

On 19/10/2023 08:06, Praveen Teja Kundanala wrote:
> Add nvmem DT nodes for ZynqMP SOC
> 
> Signed-off-by: Praveen Teja Kundanala <praveen.teja.kundanala@....com>
> ---
>  arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 59 +++++++++++++++++++++++++-
>  1 file changed, 57 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> index b61fc99cd911..b7433e6b9d6c 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> @@ -194,14 +194,69 @@ zynqmp_power: zynqmp-power {
>  				mbox-names = "tx", "rx";
>  			};
>  
> -			nvmem_firmware {
> +			nvmem-firmware {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation


>  				compatible = "xlnx,zynqmp-nvmem-fw";

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check W=1` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

>  				#address-cells = <1>;
>  				#size-cells = <1>;
>  
> -				soc_revision: soc_revision@0 {
> +				soc_revision: soc-revision@0 {
>  					reg = <0x0 0x4>;
>  				};

Wasn't this fixed already by Michal?


Best regards,
Krzysztof