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| author | Lorenzo Bianconi | 2017-07-17 19:39:04 +0200 |
|---|---|---|
| committer | Jonathan Cameron | 2017-07-25 21:01:42 +0200 |
| commit | 21d841b2a417bfe4cce9b1266bb851ba0da89d37 (patch) | |
| tree | e6a930e67509dac268fac33fa6556c64dcbc7dc7 | |
| parent | iio: humidity: hts221: support open drain mode (diff) | |
| download | kernel-qcow2-linux-21d841b2a417bfe4cce9b1266bb851ba0da89d37.tar.gz kernel-qcow2-linux-21d841b2a417bfe4cce9b1266bb851ba0da89d37.tar.xz kernel-qcow2-linux-21d841b2a417bfe4cce9b1266bb851ba0da89d37.zip | |
dt-bindings: iio: humidity: hts221: support open drain mode
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | Documentation/devicetree/bindings/iio/humidity/hts221.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/humidity/hts221.txt b/Documentation/devicetree/bindings/iio/humidity/hts221.txt index fca263e13400..10adeb0d703d 100644 --- a/Documentation/devicetree/bindings/iio/humidity/hts221.txt +++ b/Documentation/devicetree/bindings/iio/humidity/hts221.txt @@ -5,6 +5,14 @@ Required properties: - reg: i2c address of the sensor / spi cs line Optional properties: +- drive-open-drain: the interrupt/data ready line will be configured + as open drain, which is useful if several sensors share the same + interrupt line. This is a boolean property. + If the requested interrupt is configured as IRQ_TYPE_LEVEL_HIGH or + IRQ_TYPE_EDGE_RISING a pull-down resistor is needed to drive the line + when it is not active, whereas a pull-up one is needed when interrupt + line is configured as IRQ_TYPE_LEVEL_LOW or IRQ_TYPE_EDGE_FALLING. + Refer to pinctrl/pinctrl-bindings.txt for the property description. - interrupt-parent: should be the phandle for the interrupt controller - interrupts: interrupt mapping for IRQ. It should be configured with flags IRQ_TYPE_LEVEL_HIGH, IRQ_TYPE_EDGE_RISING, IRQ_TYPE_LEVEL_LOW or |