Messages in this thread Patch in this message | | | From | Andrey Smirnov <> | Subject | [PATCH 05/13] bindings: gpio-sx150x: Document "semtech,io-polarity" binding | Date | Mon, 17 Oct 2016 07:27:00 -0700 |
| |
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> --- Documentation/devicetree/bindings/gpio/gpio-sx150x.txt | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt index c809acb..02b92ae 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt @@ -26,6 +26,15 @@ The GPIO expander can optionally be used as an interrupt controller, in which case it uses the default two cell specifier as described in Documentation/devicetree/bindings/interrupt-controller/interrupts.txt. +Optional properties: + +- semtech,io-polarity: A bit-mask which enables polarity inversion for + each IO line in the expander. Setting the bit + at position n inverts the polarity of that IO + line, while clearing it results in normal + polarity. For chips with fewer than 16 IO pins, + high-end bits are ignored. + Example: i2c_gpio_expander@20{ -- 2.5.5
| |