linux-kernel - Re: [PATCH 2/3] dt-bindings: i3c: Document Synopsys DesignWare I3C master bindings

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Date:   Wed, 25 Jul 2018 13:57:33 -0600
From:   Rob Herring <robh@...nel.org>
To:     Vitor soares <Vitor.Soares@...opsys.com>
Cc:     boris.brezillon@...tlin.com, wsa@...-dreams.de,
        linux-i2c@...r.kernel.org, corbet@....net,
        linux-doc@...r.kernel.org, gregkh@...uxfoundation.org,
        arnd@...db.de, psroka@...ence.com, agolec@...ence.com,
        adouglas@...ence.com, bfolta@...ence.com, dkos@...ence.com,
        alicja@...ence.com, cwronka@...ence.com, sureshp@...ence.com,
        rafalc@...ence.com, thomas.petazzoni@...tlin.com, nm@...com,
        pawel.moll@....com, mark.rutland@....com,
        ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        geert@...ux-m68k.org, linus.walleij@...aro.org,
        Xiang.Lin@...aptics.com, linux-gpio@...r.kernel.org,
        nsekhar@...com, pgaj@...ence.com, peda@...ntia.se,
        Joao.Pinto@...opsys.com
Subject: Re: [PATCH 2/3] dt-bindings: i3c: Document Synopsys DesignWare I3C
 master bindings

On Fri, Jul 20, 2018 at 09:57:51PM +0100, Vitor soares wrote:
> This patch document Synopsys DesignWare I3C master DT bindings.
> 
> Signed-off-by: Vitor soares <soares@...opsys.com>
> ---
>  .../devicetree/bindings/i3c/snps,dw-i3c-master.txt | 43 ++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
> 
> diff --git a/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt b/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
> new file mode 100644
> index 0000000..7f5c8b0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
> @@ -0,0 +1,43 @@
> +Bindings for Synopsys DesignWare I3C master block
> +=================================================
> +
> +Required properties:
> +--------------------
> +- compatible: shall be "snps,dw-i3c-master"

Only one version and no version number?

... and an SoC specific compatible string.

> +- clocks: shall reference the core_clk
> +- clock-names: shall contain "core_clk"

"_clk" is redundant and *-names with a single entry is kind of 
pointless.

> +- interrupts: the interrupt line connected to this I3C master
> +- reg:  Offset and length of I3C master registers
> +
> +Mandatory properties defined by the generic binding (see
> +Documentation/devicetree/bindings/i3c/i3c.txt for more details):
> +
> +- #address-cells: shall be set to 3
> +- #size-cells: shall be set to 0
> +
> +Optional properties defined by the generic binding (see
> +Documentation/devicetree/bindings/i3c/i3c.txt for more details):
> +
> +- i2c-scl-hz
> +- i3c-scl-hz
> +
> +I3C device connected on the bus follow the generic description (see
> +Documentation/devicetree/bindings/i3c/i3c.txt for more details).
> +
> +Example:
> +
> +	i3c-master@...000 {

Drop the '0x'

> +		compatible = "snps,dw-i3c-master";
> +		#address-cells = <3>;
> +		#size-cells = <0>;
> +		reg = <0x02000 0x1000>;
> +		interrupts = <0>;
> +		clocks = <&i3cclk>;
> +		clock-names = "core_clk";
> +
> +		eeprom@...7{
> +			compatible = "atmel,24c01";
> +			reg = < 0x57 0x80000010 0x0>;
> +			pagesize = <0x8>;
> +		};
> +	};
> -- 
> 2.7.4
> 
>