On Sun, 11 Oct 2020 18:52:48 +0100 Harald Geyer <harald@xxxxxxxxx> wrote: > On 11.10.2020 18:07, Jonathan Cameron wrote: > > From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > > > The conversion is straight forward, but leaves an open question. > > The compatible for this device has never had a vendor. I suspect > > this because it is non-obvious who actually makes the module. It is > > resold by numerous vendors and it may be that there is no single > > vendor > > of the parts they are using. If anyone has any more info on the > > vendor, please let me know and we can add a more informative > > compatible. > > I think these parts come from Aosong: http://www.aosong.com/en/ > > The DHT11 uses a custom protocol, so I don't think other vendors > would be using this. Even Aosong started using i2c by now. > > On the other hand DHT11 seems to be more of a trade name then a > part identifier. The latter probably would be something like > aosong,am2302 (trade name DHT22). > > However the matching between identifiers and trade names is > confusing for the older products. I'm not sure if it is worth > digging into this. Probably only the people at aosong could > clear this up. Probably worth adding a note to the binding doc so I'll do that whilst applying or for a v2 if needed. Thanks for the info! > > Anyway, you have my: > Acked-By: Harald Geyer <harald@xxxxxxxxx> > > Thanks, > Harald > > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > Cc: Harald Geyer <harald@xxxxxxxxx> > > --- > > .../bindings/iio/humidity/dht11.txt | 14 ------- > > .../bindings/iio/humidity/dht11.yaml | 41 > > +++++++++++++++++++ > > 2 files changed, 41 insertions(+), 14 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/iio/humidity/dht11.txt > > b/Documentation/devicetree/bindings/iio/humidity/dht11.txt > > deleted file mode 100644 > > index ecc24c199fd6..000000000000 > > --- a/Documentation/devicetree/bindings/iio/humidity/dht11.txt > > +++ /dev/null > > @@ -1,14 +0,0 @@ > > -* DHT11 humidity/temperature sensor (and compatibles like DHT22) > > - > > -Required properties: > > - - compatible: Should be "dht11" > > - - gpios: Should specify the GPIO connected to the sensor's data > > - line, see "gpios property" in > > - Documentation/devicetree/bindings/gpio/gpio.txt. > > - > > -Example: > > - > > -humidity_sensor { > > - compatible = "dht11"; > > - gpios = <&gpio0 6 0>; > > -} > > diff --git > > a/Documentation/devicetree/bindings/iio/humidity/dht11.yaml > > b/Documentation/devicetree/bindings/iio/humidity/dht11.yaml > > new file mode 100644 > > index 000000000000..38ec4c302760 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/iio/humidity/dht11.yaml > > @@ -0,0 +1,41 @@ > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/iio/humidity/dht11.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: DHT11 humidity + temperature sensor > > + > > +maintainers: > > + - Harald Geyer <harald@xxxxxxxxx> > > + > > +description: | > > + A simple and low cost module providing a non standard single GPIO > > based > > + interface. Whilst commonly available it is not easy to establish > > if there > > + is a single manufacturer for this part. > > + > > +properties: > > + compatible: > > + const: dht11 > > + > > + reg: > > + maxItems: 1 > > + > > + gpios: > > + maxItems: 1 > > + description: > > + Single, interrupt capable, GPIO used to communicate with the > > device. > > + > > +required: > > + - compatible > > + - gpios > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + humidity_sensor { > > + compatible = "dht11"; > > + gpios = <&gpio0 6 0>; > > + }; > > +... >
