linux-kernel - Re: [PATCH 1/3] DT/bindings: Add bindings for TI ADS7950 A/DC chips

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Date:   Sat, 14 Jan 2017 12:00:11 -0600
From:   David Lechner <david@...hnology.com>
To:     Jonathan Cameron <jic23@...nel.org>, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] DT/bindings: Add bindings for TI ADS7950 A/DC chips

On 01/14/2017 06:53 AM, Jonathan Cameron wrote:
> On 11/01/17 17:52, David Lechner wrote:
>> This adds device tree bindings for the TI ADS7950 family of A/DC chips.
>>
>> Signed-off-by: David Lechner <david@...hnology.com>
> This is in of itself good, but we may need to have some deprecated
> elements to continue supporting what was implicitly happening with
> the missnaming so as to avoid accidentally breaking someone's device
> tree.
>

As I mentioned in my cover letter, this driver, as far as I can tell, 
only exists in your testing branch, so I find it highly unlikely that we 
would be breaking anyone. It is not in mainline and it is not even in 
linux-next.

> Jonathan
>> ---
>>  .../devicetree/bindings/iio/adc/ti-ads7950.txt     | 23 ++++++++++++++++++++++
>>  1 file changed, 23 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/iio/adc/ti-ads7950.txt
>>
>> diff --git a/Documentation/devicetree/bindings/iio/adc/ti-ads7950.txt b/Documentation/devicetree/bindings/iio/adc/ti-ads7950.txt
>> new file mode 100644
>> index 0000000..e77a6f7
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/iio/adc/ti-ads7950.txt
>> @@ -0,0 +1,23 @@
>> +* Texas Instruments ADS7950 family of A/DC chips
>> +
>> +Required properties:
>> + - compatible: Must be one of "ti,ads7950", "ti,ads7951", "ti,ads7952",
>> +   "ti,ads7953", "ti,ads7954", "ti,ads7955", "ti,ads7956", "ti,ads7957",
>> +   "ti,ads7958", "ti,ads7959", "ti,ads7960", or "ti,ads7961"
>> + - reg: SPI chip select number for the device
>> + - #io-channel-cells: Must be 1 as per ../iio-bindings.txt
>> + - vref-supply: phandle to a regulator node that supplies the 2.5V or 5V
>> +   reference voltage
>> +
>> +Recommended properties:
>> + - spi-max-frequency: Definition as per
>> +		Documentation/devicetree/bindings/spi/spi-bus.txt
>> +
>> +Example:
>> +adc@0 {
>> +	compatible = "ti,ads7957";
>> +	reg = <0>;
>> +	#io-channel-cells = <1>;
>> +	vref-supply = <&refin_supply>;
>> +	spi-max-frequency = <10000000>;
>> +};
>>
>