linux-kernel - Re: [PATCH v2 2/2] i2c: aspeed: added documentation for Aspeed I2C driver

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Date:   Mon, 19 Sep 2016 16:26:16 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Wolfram Sang <wsa@...-dreams.de>, mark.rutland@....com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Joel Stanley <joel@....id.au>, Jeremy Kerr <jk@...abs.org>
Subject: Re: [PATCH v2 2/2] i2c: aspeed: added documentation for Aspeed I2C driver

Addressed in v3.

Thanks!

On Mon, Sep 19, 2016 at 2:35 PM, Rob Herring <robh@...nel.org> wrote:
> On Fri, Sep 09, 2016 at 06:55:51PM -0700, Brendan Higgins wrote:
>> Added device tree binding documentation for Aspeed I2C controller and
>> busses.
>>
>> Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
>> ---
>> Changes for v2:
>>   - None
>> ---
>>  .../devicetree/bindings/i2c/i2c-aspeed.txt         | 63 ++++++++++++++++++++++
>>  1 file changed, 63 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-aspeed.txt
>>
>> diff --git a/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt b/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt
>> new file mode 100644
>> index 0000000..df68f2a
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt
>> @@ -0,0 +1,63 @@
>> +Device tree configuration for the I2C controller and busses on the AST24XX
>> +and AST25XX SoCs.
>> +
>> +Controller:
>> +
>> +     Required Properties:
>> +     - #address-cells        : should be 1
>> +     - #size-cells           : should be 1
>> +     - #interrupt-cells      : should be 1
>> +     - compatible            : should be "aspeed,ast2400-i2c-controller"
>> +                               or "aspeed,ast2500-i2c-controller"
>> +     - reg                   : address start and range of controller
>> +     - ranges                : defines address offset and range for busses
>> +     - interrupts            : interrupt number
>> +     - clocks                : root clock of bus, should reference the APB
>> +                               clock
>> +     - clock-ranges          : specifies that child busses can inherit clocks
>> +     - interrupt-controller  : denotes that the controller receives and fires
>> +                               new interrupts for child busses
>> +
>> +Bus:
>> +
>> +     Required Properties:
>> +     - #address-cells        : should be 1
>> +     - #size-cells           : should be 0
>> +     - reg                   : address offset and range of bus
>> +     - compatible            : should be "aspeed,ast2400-i2c-bus"
>> +                               or "aspeed,ast2500-i2c-bus"
>> +     - bus                   : the bus's number
>
> Don't use indexes. The reg property is enough to id which bus is which.