[PATCH 1/2] extcon: usb-gpio: Add level trigger support
From: Baolin Wang <hidden>
Date: 2017-03-20 08:01:04
Also in:
lkml
Subsystem:
external connector subsystem (extcon), open firmware and flattened device tree bindings, the rest · Maintainers:
MyungJoo Ham, Chanwoo Choi, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID gpios' detection can be triggered by the level trigger on some platforms. Thus intoduce one property 'extcon-gpio,level-trigger' to identify this situation. Signed-off-by: Baolin Wang <redacted> --- .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt
index dfc14f7..191504b 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt
+++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt@@ -9,6 +9,9 @@ Required properties: Either one of id-gpio or vbus-gpio must be present. Both can be present as well. - id-gpio: gpio for USB ID pin. See gpio binding. - vbus-gpio: gpio for USB VBUS pin. +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to +level trigger. If not specified defaults to false, gpio's interrupt flag +defaults to edge trigger. Example: Examples of extcon-usb-gpio node in dra7-evm.dts as listed below: extcon_usb1 {
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1.7.9.5
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