linux-kernel - Re: [PATCH v4 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC controller bindings

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Message-ID: <13e662c5-7476-191c-35bb-c451ab900473@gmail.com>
Date:   Wed, 26 Dec 2018 20:07:24 +0100
From:   Marek Vasut <marek.vasut@...il.com>
To:     Mason Yang <masonccyang@...c.com.tw>, broonie@...nel.org,
        linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
        boris.brezillon@...tlin.com, linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        sergei.shtylyov@...entembedded.com
Cc:     juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        zhengxunli@...c.com.tw
Subject: Re: [PATCH v4 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC
 controller bindings

On 12/24/18 7:52 AM, Mason Yang wrote:
> Document the bindings used by the Renesas R-Car Gen3 RPC controller.
> 
> Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
> ---
>  .../devicetree/bindings/spi/spi-renesas-rpc.txt    | 37 ++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> 
> diff --git a/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> new file mode 100644
> index 0000000..ba863d7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> @@ -0,0 +1,37 @@
> +Renesas R-Car Gen3 RPC controller Device Tree Bindings
> +------------------------------------------------------
> +
> +Required properties:
> +- compatible: should be "renesas,r8a77995-rpc"
> +- #address-cells: should be 1
> +- #size-cells: should be 0
> +- reg: should contain 2 entries, one for the registers and one for the direct
> +       mapping area
> +- reg-names: should contain "regs" and "dirmap"
> +- clock-names: should contain "rpc"
> +- clocks: should contain 1 entries for the module's clock
> +- renesas,rpc-mode: should contain "spi" for rpc spi mode or
> +			   	   "hyperflash" for rpc hyerflash mode.

We do not need special property to identify that the controller is in HF
mode, just attach CFI NOR node or JEDEC SPI NOR underneath it.

-- 
Best regards,
Marek Vasut