linux-kernel - Re: [PATCH v8 1/3] dt-bindings: i2c: extend existing opencore bindings.

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Message-ID: <CAARK3Hm0F+6qAh5LYbqnfn5LeDyptyBy+_DZxAxxFg5bhe8Uxg@mail.gmail.com>
Date:   Thu, 30 May 2019 09:27:31 +0530
From:   Sagar Kadam <sagar.kadam@...ive.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, peter@...sgaard.com,
        Andrew Lunn <andrew@...n.ch>,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Sagar Kadam <sagar.kadam@...ive.com>,
        Linux I2C <linux-i2c@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 1/3] dt-bindings: i2c: extend existing opencore bindings.

Hello Rob,

Please let me know if this patch is as per your requirements/comments
you mentioned earlier.

Thanks & Regards,
Sagar Kadam
On Wed, May 29, 2019 at 9:57 AM Sagar Shrikant Kadam
<sagar.kadam@...ive.com> 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..6b25a80 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"
> +                    For Opencore based I2C IP block reimplemented in
> +                    FU540-C000 SoC. Please refer to sifive-blocks-ip-versioning.txt
> +                    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
>