linux-kernel - Re: [PATCH v3 18/20] dt-bindings: qcom_nandc: IPQ8074 QPIC NAND documentation

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Message-ID: <20170810203009.sree54ddecbnymep@rob-hp-laptop>
Date:   Thu, 10 Aug 2017 15:30:09 -0500
From:   Rob Herring <robh@...nel.org>
To:     Abhishek Sahu <absahu@...eaurora.org>
Cc:     dwmw2@...radead.org, boris.brezillon@...e-electrons.com,
        computersforpeace@...il.com, marek.vasut@...il.com,
        mark.rutland@....com, richard@....at, cyrille.pitchen@...ev4u.fr,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        andy.gross@...aro.org, architt@...eaurora.org,
        sricharan@...eaurora.org
Subject: Re: [PATCH v3 18/20] dt-bindings: qcom_nandc: IPQ8074 QPIC NAND
 documentation

On Sat, Aug 05, 2017 at 09:49:56PM +0530, Abhishek Sahu wrote:
> Qualcom IPQ8074 SoC uses QPIC NAND controller version 1.5.0
> which uses BAM DMA Engine.
> 
> Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>
> ---
>  Documentation/devicetree/bindings/mtd/qcom_nandc.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> index d93b952..8dfa543 100644
> --- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> @@ -6,6 +6,8 @@ Required properties:
>  			    SoC and it uses ADM DMA
>      * "qcom,ipq4019-nand" - for QPIC NAND controller v1.4.0 being used in
>                              IPQ4019 SoC and it uses BAM DMA
> +    * "qcom,ipq8074-nand" - for QPIC NAND controller v1.5.0 being used in
> +                            IPQ8074 SoC and it uses BAM DMA
>  
>  - reg:			MMIO address range
>  - clocks:		must contain core clock and always on clock
> @@ -97,7 +99,7 @@ nand-controller@...00000 {
>  };
>  
>  nand-controller@...0000 {
> -	compatible = "qcom,ipq4019-nand";
> +	compatible = "qcom,ipq4019-nand", "qcom,ipq8074-nand";

The order here should be reversed as 8074 is the newer one. And if 4019 
is the fallback compatible, that needs to be documented above.

Rob