linux-kernel - Re: [PATCH v7 1/3] dt-bindings: i2c: extend existing opencore bindings.

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Message-ID: <20190524204012.GA2580@bogus>
Date:   Fri, 24 May 2019 15:40:12 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sagar Shrikant Kadam <sagar.kadam@...ive.com>
Cc:     mark.rutland@....com, peter@...sgaard.com, andrew@...n.ch,
        palmer@...ive.com, paul.walmsley@...ive.com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 1/3] dt-bindings: i2c: extend existing opencore
 bindings.

On Wed, May 22, 2019 at 02:29:32PM +0530, Sagar Shrikant Kadam wrote:
> Reformatted compatibility strings to one valid combination on
> each line.
> Add FU540-C000 specific device tree bindings to already available
> i2-ocores file. This device is available on
> HiFive Unleashed Rev A00 board. Move interrupt under optional
> property list as this can be optional.
> 
> The FU540-C000 SoC from sifive, has an Opencore's I2C block
> reimplementation.
> 
> The DT compatibility string for this IP is present in HDL and available at.
> https://github.com/sifive/sifive-blocks/blob/master/src/main/scala/devices/i2c/I2C.scala#L73
> 
> Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@...ive.com>
> ---
>  Documentation/devicetree/bindings/i2c/i2c-ocores.txt | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
> index 17bef9a..db96951 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
> @@ -1,9 +1,13 @@
>  Device tree configuration for i2c-ocores
>  
>  Required properties:
> -- compatible      : "opencores,i2c-ocores" or "aeroflexgaisler,i2cmst"
> +- compatible      : "opencores,i2c-ocores",
> +                    "aeroflexgaisler,i2cmst",
> +                    "sifive,fu540-c000-i2c","sifive,i2c0".

space needed                                   ^

And drop the end of line commas and period.


> +                    For Opencore based I2C IP block reimplemented in
> +                    FU540-C000 SoC.Please refer sifive-blocks-ip-versioning.txt

And here too.

And 'refer to'

> +                    for additional details.
>  - reg             : bus address start and address range size of device
> -- interrupts      : interrupt number
>  - clocks          : handle to the controller clock; see the note below.
>                      Mutually exclusive with opencores,ip-clock-frequency
>  - opencores,ip-clock-frequency: frequency of the controller clock in Hz;
> @@ -12,6 +16,7 @@ Required properties:
>  - #size-cells     : should be <0>
>  
>  Optional properties:
> +- interrupts      : interrupt number.
>  - clock-frequency : frequency of bus clock in Hz; see the note below.
>                      Defaults to 100 KHz when the property is not specified
>  - reg-shift       : device register offsets are shifted by this value
> -- 
> 1.9.1
>