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SubjectRe: [PATCH v5 1/2] iio:temperature:max31856:Add device tree bind info
On Tue, Feb 26, 2019 at 04:02:13PM +0100, Patrick Havelange wrote:
> From: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com>
>
> This patch added device tree binding info for MAX31856 driver.
>
> Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com>
> Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
> Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
> ---
> Changes
> v1 -> v2
> [Matt
> - Removed comment block and added possibilities of
> thermocouple type in device tree binding doc.
>
> v2 -> v3
> - Rebased
>
> v3 -> v4
> - Removed one-shot property related information.
> - Used standard name 'temp-sensor'
>
> v4 -> v5
> [Patrick
> - Rename thermocouple type to maxim,thermocouple-type for DT entry
> ---
> .../bindings/iio/temperature/max31856.txt | 29 +++++++++++++++++++
> 1 file changed, 29 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/temperature/max31856.txt
>
> diff --git a/Documentation/devicetree/bindings/iio/temperature/max31856.txt b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
> new file mode 100644
> index 000000000000..b4396069b8fa
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
> @@ -0,0 +1,29 @@
> +Maxim MAX31856 thermocouple support
> +
> +https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf
> +
> +Required properties:
> + - compatible: must be "maxim,max31856"
> + - reg: SPI chip select number for the device
> + - spi-max-frequency: As per datasheet max. supported freq is 5000000
> + - spi-cpha: must be defined for max31856 to enable SPI mode 1
> + - maxim,thermocouple-type: Type of thermocouple (By default is K-Type)
> + 0x00 : TYPE_B
> + 0x01 : TYPE_E
> + 0x02 : TYPE_J
> + 0x03 : TYPE_K (default)
> + 0x04 : TYPE_N
> + 0x05 : TYPE_R
> + 0x06 : TYPE_S
> + 0x07 : TYPE_T

These appear to be standard types. Perhaps this should be a common
property instead?

> +
> + Refer to spi/spi-bus.txt for generic SPI slave bindings.
> +
> + Example:
> + temp-sensor@0 {
> + compatible = "maxim,max31856";
> + reg = <0>;
> + spi-max-frequency = <5000000>;
> + spi-cpha;
> + maxim,thermocouple-type = <0x03>;
> + };
> --
> 2.19.1
>

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