diff options
| author | Uwe Kleine-König <uwe@kleine-koenig.org> | 2017-05-26 21:07:03 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-05-31 11:51:21 +0200 |
| commit | 20d4dcec04873dc15446825c21925379da1fd1ce (patch) | |
| tree | 518ab81ee7588f255a0e31557437a0b0089b76fc | |
| parent | bc6d5d7666b73cbd8d6ed6ee3aece84903fffe0b (diff) | |
dts: gpio_atmel: adapt binding doc to reality
The second cell in a gpio reference is used to pass GPIO_ACTIVE_LOW or
GPIO_ACTIVE_HIGH. The gpio device can also be used as irq controller and
a reference can contain the IRQ_TYPE_* values in the second cell.
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio_atmel.txt | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt index 85f8c0d084fa..29416f9c3220 100644 --- a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt +++ b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt @@ -5,9 +5,13 @@ Required properties: - reg: Should contain GPIO controller registers location and length - interrupts: Should be the port interrupt shared by all the pins. - #gpio-cells: Should be two. The first cell is the pin number and - the second cell is used to specify optional parameters (currently - unused). + the second cell is used to specify optional parameters to declare if the GPIO + is active high or low. See gpio.txt. - gpio-controller: Marks the device node as a GPIO controller. +- interrupt-controller: Marks the device node as an interrupt controller. +- #interrupt-cells: Should be two. The first cell is the pin number and the + second cell is used to specify irq type flags, see the two cell description + in interrupt-controller/interrupts.txt for details. optional properties: - #gpio-lines: Number of gpio if absent 32. @@ -21,5 +25,7 @@ Example: #gpio-cells = <2>; gpio-controller; #gpio-lines = <19>; + interrupt-controller; + #interrupt-cells = <2>; }; |