On Fri, 26 Oct 2018 18:14:36 +0000
Carlos Iglesias <carlos.iglesias@xxxxxxxxxx> wrote:
> Add device tree bindings for the HSC pressure sensors.
>
> Signed-off-by: Carlos Iglesias <carlos.iglesias@xxxxxxxxxx>
> ---
> .../bindings/iio/pressure/hsc_spi.txt | 85 +++++++++++++++++++
> 1 file changed, 85 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/pressure/hsc_spi.txt
>
> diff --git a/Documentation/devicetree/bindings/iio/pressure/hsc_spi.txt b/Documentation/devicetree/bindings/iio/pressure/hsc_spi.txt
> new file mode 100644
> index 000000000000..2302d6eef7c7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/pressure/hsc_spi.txt
> @@ -0,0 +1,85 @@
> +Honeywell HSC Series of Pressure Sensors
> +
> +Pressure sensors from Honeywell with analog, I2C and SPI interfaces
> +
> +Required properties:
> +- compatible: selects the sensor model; must be one of the following
> + "honeywell,hsc001baa"
> + "honeywell,hsc001bab"
> + "honeywell,hsc001bac"
> + "honeywell,hsc001baf"
> + "honeywell,hsc1_6baa"
> + "honeywell,hsc1_6bab"
> + "honeywell,hsc1_6bac"
> + "honeywell,hsc1_6baf"
> + "honeywell,hsc2_5baa"
> + "honeywell,hsc2_5bab"
> + "honeywell,hsc2_5bac"
> + "honeywell,hsc2_5baf"
> + "honeywell,hsc004baa"
> + "honeywell,hsc004bab"
> + "honeywell,hsc004bac"
> + "honeywell,hsc004baf"
> + "honeywell,hsc006baa"
> + "honeywell,hsc006bab"
> + "honeywell,hsc006bac"
> + "honeywell,hsc006baf"
> + "honeywell,hsc010baa"
> + "honeywell,hsc010bab"
> + "honeywell,hsc010bac"
> + "honeywell,hsc010baf"
> + "honeywell,hsc100kaa"
> + "honeywell,hsc100kab"
> + "honeywell,hsc100kac"
> + "honeywell,hsc100kaf"
> + "honeywell,hsc160kaa"
> + "honeywell,hsc160kab"
> + "honeywell,hsc160kac"
> + "honeywell,hsc160kaf"
> + "honeywell,hsc250kaa"
> + "honeywell,hsc250kab"
> + "honeywell,hsc250kac"
> + "honeywell,hsc250kaf"
> + "honeywell,hsc400kaa"
> + "honeywell,hsc400kab"
> + "honeywell,hsc400kac"
> + "honeywell,hsc400kaf"
> + "honeywell,hsc600kaa"
> + "honeywell,hsc600kab"
> + "honeywell,hsc600kac"
> + "honeywell,hsc600kaf"
> + "honeywell,hsc001gaa"
> + "honeywell,hsc001gab"
> + "honeywell,hsc001gac"
> + "honeywell,hsc001gaf"
> + "honeywell,hsc015paa"
> + "honeywell,hsc015pab"
> + "honeywell,hsc015pac"
> + "honeywell,hsc015paf"
> + "honeywell,hsc030paa"
> + "honeywell,hsc030pab"
> + "honeywell,hsc030pac"
> + "honeywell,hsc030paf"
> + "honeywell,hsc060paa"
> + "honeywell,hsc060pab"
> + "honeywell,hsc060pac"
> + "honeywell,hsc060paf"
> + "honeywell,hsc100paa"
> + "honeywell,hsc100pab"
> + "honeywell,hsc100pac"
> + "honeywell,hsc100paf"
> + "honeywell,hsc150paa"
> + "honeywell,hsc150pab"
> + "honeywell,hsc150pac"
> + "honeywell,hsc150paf"
> +- reg: the SPI chip select number used by the sensor.
> +- spi-max-frequency: maximum clock frequency (Hz) used for the SPI bus.
> + The maximum value supported by the sensors is 400000.
As Rob pointed out in a few reviews this week, the devicetree binding
for this should only be applying a tighter bound than either the
device or the bus master. So something introduced by the board
layout for example, or a level convertor..
Jonathan
> +
> +Example:
> +
> + hsc_spi0: hsc@0 {
> + compatible = "honeywell,hsc010baa";
> + reg = <0>;
> + spi-max-frequency = <400000>;
> + };
