linux-kernel - Re: [PATCH v3 2/2] dt-binding: spi: Document Renesas R-Car Gen3 RPC controller bindings

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Date:   Fri, 7 Dec 2018 19:03:10 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Mason Yang <masonccyang@...c.com.tw>, broonie@...nel.org,
        marek.vasut@...il.com, 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>
Cc:     juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        zhengxunli@...c.com.tw
Subject: Re: [PATCH v3 2/2] dt-binding: spi: Document Renesas R-Car Gen3 RPC
 controller bindings

Hello!

On 12/07/2018 02:13 PM, 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    | 38 ++++++++++++++++++++++
>  1 file changed, 38 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..a191f70
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> @@ -0,0 +1,38 @@
> +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 "rpc_regs" and "dirmap"

   Please drop this "rpc_" thing, I think "regs" should be enough.

> +- interrupts: interrupt line connected to the RPC controller
> +- clock-names: should contain "clk_rpc"

   Please drop this "clk_" thing. BTW, what's with the RPCD2 clock?

> +- clocks: should contain 1 entries for the module's clock
> +- rpc-mode: should contain "rpc-spi-flash" for rpc spi mode or
> +			   "rpc-hyperflash" for rpc hyerflash mode.

   I think the prop should be called "renesas,rpc-mode" and the values should be
just "spi" and "hyperflash". 

[...]

MBR, Sergei