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Date:   Tue, 25 Aug 2020 08:40:20 +0200
From:   Sascha Hauer <s.hauer@pengutronix.de>
To:     Krzysztof Kozlowski <krzk@kernel.org>
Cc:     Lee Jones <lee.jones@linaro.org>, Rob Herring <robh+dt@kernel.org>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Shawn Guo <shawnguo@kernel.org>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Adam Ford <aford173@gmail.com>,
        Daniel Baluta <daniel.baluta@nxp.com>,
        Anson Huang <Anson.Huang@nxp.com>,
        Robin Gong <yibin.gong@nxp.com>, Li Jun <jun.li@nxp.com>,
        Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
        Han Xu <han.xu@nxp.com>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 02/16] dt-bindings: mtd: gpmi-nand: Fix matching of
 clocks on different SoCs
Message-ID: <20200825064020.GM13023@pengutronix.de>
References: <20200824190701.8447-1-krzk@kernel.org>
 <20200824190701.8447-2-krzk@kernel.org>
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On Mon, Aug 24, 2020 at 09:06:47PM +0200, Krzysztof Kozlowski wrote:
> Driver requires different amount of clocks for different SoCs.  Describe
> these requirements properly to fix dtbs_check warnings like:
> 
>     arch/arm64/boot/dts/freescale/imx8mm-beacon-kit.dt.yaml: nand-controller@33002000: clock-names:1: 'gpmi_apb' was expected
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
> ---
>  .../devicetree/bindings/mtd/gpmi-nand.yaml    | 76 +++++++++++++++----
>  1 file changed, 61 insertions(+), 15 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.yaml b/Documentation/devicetree/bindings/mtd/gpmi-nand.yaml
> index 28ff8c581837..9d764e654e1d 100644
> --- a/Documentation/devicetree/bindings/mtd/gpmi-nand.yaml
> +++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.yaml
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - fsl,imx6q-gpmi-nand
> +              - fsl,imx6sx-gpmi-nand
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: SoC gpmi io clock
> +            - description: SoC gpmi apb clock
> +            - description: SoC gpmi bch clock
> +            - description: SoC gpmi bch apb clock
> +            - description: SoC per1 bch clock
> +        clock-names:
> +          items:
> +            - const: gpmi_io
> +            - const: gpmi_apb
> +            - const: gpmi_bch
> +            - const: gpmi_bch_apb
> +            - const: per1_bch

This enforces this specific order of the clocks given in the dts. The
clock binding itself doesn't require any specific order, that's what we
have the names array for.

Is this really what we want?

Sascha

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