linux-kernel - Re: [PATCH v2 1/3] dt-bindings: mailbox: fsl,mu: add i.MX95 Generic/ELE/V2X MU compatible

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Date: Tue, 23 Jan 2024 09:14:14 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>,
 Jassi Brar <jassisinghbrar@...il.com>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Dong Aisheng <aisheng.dong@....com>,
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH v2 1/3] dt-bindings: mailbox: fsl,mu: add i.MX95
 Generic/ELE/V2X MU compatible

On 22/01/2024 07:19, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Add i.MX95 Generic, Secure Enclave and V2X Message Unit compatible string.
> And some MUs has internal RAMs for SCMI shared buffer usage.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  .../devicetree/bindings/mailbox/fsl,mu.yaml        | 50 +++++++++++++++++++++-
>  1 file changed, 48 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> index 12e7a7d536a3..d10c6fed291b 100644
> --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> @@ -29,10 +29,14 @@ properties:
>        - const: fsl,imx8ulp-mu
>        - const: fsl,imx8-mu-scu
>        - const: fsl,imx8-mu-seco
> -      - const: fsl,imx93-mu-s4
>        - const: fsl,imx8ulp-mu-s4
> +      - const: fsl,imx93-mu-s4
> +      - const: fsl,imx95-mu-ele
> +      - const: fsl,imx95-mu-v2x
>        - items:
> -          - const: fsl,imx93-mu
> +          - enum:
> +              - fsl,imx93-mu
> +              - fsl,imx95-mu
>            - const: fsl,imx8ulp-mu
>        - items:
>            - enum:
> @@ -95,6 +99,17 @@ properties:
>    power-domains:
>      maxItems: 1
>  
> +  ranges: true
> +
> +  "#address-cells": true
> +
> +  "#size-cells": true

Please narrow the addressing.

> +
> +patternProperties:
> +  "^sram@[a-z0-9]+":

Use proper regex for unit address.  a-f

> +    $ref: /schemas/sram/sram.yaml#
> +    unevaluatedProperties: false
> +
>  required:
>    - compatible
>    - reg
> @@ -134,3 +149,34 @@ examples:
>          interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
>          #mbox-cells = <2>;
>      };
> +
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    mu2: mailbox@...b0000 {
> +        #address-cells = <1>;

Please follow order of properties as written in DTS coding style.

> +        #size-cells = <1>;
> +        compatible = "fsl,imx95-mu", "fsl,imx8ulp-mu";
> +        reg = <0x445b0000 0x10000>;
> +        interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>;
> +        ranges;
> +        #mbox-cells = <2>;
> +
> +        sram@...b1000 {
> +            compatible = "mmio-sram";
> +            reg = <0x445b1000 0x400>;
> +            #address-cells = <1>;
> +            #size-cells = <1>;
> +            ranges = <0x0 0x445b1000 0x400>;

Same here.


Best regards,
Krzysztof