On Thu, Aug 27, 2015 at 3:23 PM, Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
> On 20/08/15 11:12, Adriana Reus wrote:
>> Added entries in i2c/vendor-prefixes for the us5182d als and proximity sensor.
>> Also added a documentation file for this sensor's properties.
>>
>> Signed-off-by: Adriana Reus <adriana.reus@xxxxxxxxx>
> This isn't that trivial so I'd like some device tree maintainer
> input if possible.
It seems fairly reasonable to me. Would other ALS or proximity sensors
need similar properties?
> For now I've backed out the driver from my tree (given timing we have
> loads of time to sort this out!)
>
> Anyhow, anyone device tree related able to take a look at this.
>
> Adriana, btw these should be cc'd to the device tree maintainers in
> the first place (now added).
>
> Jonathan
>> ---
>> .../devicetree/bindings/iio/light/us5182d.txt | 23 ++++++++++++++++++++++
>> .../devicetree/bindings/vendor-prefixes.txt | 1 +
>> 2 files changed, 24 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/iio/light/us5182d.txt
>>
>> diff --git a/Documentation/devicetree/bindings/iio/light/us5182d.txt b/Documentation/devicetree/bindings/iio/light/us5182d.txt
>> new file mode 100644
>> index 0000000..7785c56
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/iio/light/us5182d.txt
>> @@ -0,0 +1,23 @@
>> +* UPISEMI us5182d I2C ALS and Proximity sensor
>> +
>> +Required properties:
>> +- compatible: must be "upisemi,usd5182"
>> +- reg: the I2C address of the device
>> +
>> +Optional properties:
Do you expect certain defaults if not present? Some description of how
all these values are determined would be useful.
>> +- upisemi,glass-coef: glass attenuation factor
>> +- upisemi,dark-ths: array of thresholds (adc counts) corresponding to every scale
What is the size of the array and valid range of values?
Be specific this is 16-bit property.
>> +- upisemi,upper-dark-gain: tuning factor(4 int and 4 fractional bits - Q4.4) applied when light > threshold
>> +- upisemi,lower-dark-gain: tuning factor(4 int and 4 fractional bits - Q4.4) applied when light < threshold
Be specific this is an 8-bit property.
>> +
>> +Example:
>> +
>> + usd5182@39 {
>> + compatible = "upisemi,usd5182";
>> + reg = <0x39>;
>> + upisemi,glass-coef = < 1000 >;
>> + upisemi,dark-ths = /bits/ 16 <170 200 512 512 800 2000 4000 8000>;
>> + upisemi,upper-dark-gain = /bits/ 8 <0x00>;
>> + upisemi,lower-dark-gain = /bits/ 8 <0x16>;
>> + };
>> +
>> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> index d444757..5b40bab 100644
>> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
>> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> @@ -211,6 +211,7 @@ toshiba Toshiba Corporation
>> toumaz Toumaz
>> tplink TP-LINK Technologies Co., Ltd.
>> truly Truly Semiconductors Limited
>> +upisemi uPI Semiconductor Corp.
>> usi Universal Scientific Industrial Co., Ltd.
>> v3 V3 Semiconductor
>> variscite Variscite Ltd.
>>
>
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