On Mon, Mar 20, 2017 at 09:24:34PM -0600, Sam Povilus wrote:
> Adding the ability for the ads7828 and ads7830 to use the device tree to
> get their optional parameters, instead of using platform devices. This
> allows people using custom boards to also use the ads7828 in a non-default
> manner.
>
> v2: conforming to coding style
> v3: changing from "_" to "-" for device tree entries
> v4: using regulator subsystem for voltage source, renaming differential
> input property
> v5: checking for invalid vref values sooner and returning error if they are
> bad, not warning user.
>
> Signed-off-by: Sam Povilus <[email protected]>
> ---
> .../devicetree/bindings/hwmon/ads7828.txt | 26
> ++++++++++++++++++++++
> .../devicetree/bindings/i2c/trivial-devices.txt | 2 --
> drivers/hwmon/ads7828.c | 21 +++++++++++++++++
> 3 files changed, 47 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/hwmon/ads7828.txt
>
> diff --git a/Documentation/devicetree/bindings/hwmon/ads7828.txt
> b/Documentation/devicetree/bindings/hwmon/ads7828.txt
> new file mode 100644
> index 000000000000..5a0c4a7c6144
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/ads7828.txt
> @@ -0,0 +1,26 @@
> +ads7828 properties
> +
> +Required properties:
> +- compatible: Should be one of
> + ti,ads7828
> + ti,ads7830
> +- reg: I2C address
> +
> +Optional properties:
> +
> +- ti,differential-input
> + Set to use the device in differential mode.
> +- vref
What does this point to?
Should be vref-supply?
> + The external reference on the device is set to this regulators output. If
> it
> + does not exists the internal reference will be used and output by the
> ads78xx
> + on the "external vref" pin.
> +
> + Example ADS7828 node:
> +
> + ads7828: ads@48 {
adc@...
> + comatible = "ti,ads7828";
> + reg = <0x48>;
> + vref = <&vref>;
Add a vref node to the example.
> + ti,differential-input;
> + };
> +
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