Hi Rob, On 29 March 2017 at 14:08, Baolin Wang <baolin.wang@xxxxxxxxxx> wrote: > Hi, > > On 24 March 2017 at 20:41, Rob Herring <robh+dt@xxxxxxxxxx> wrote: >> On Fri, Mar 24, 2017 at 6:56 AM, Baolin Wang <baolin.wang@xxxxxxxxxx> wrote: >>> Hi, >>> >>> On 24 March 2017 at 19:08, Chanwoo Choi <cw00.choi@xxxxxxxxxxx> wrote: >>>> Hi, >>>> >>>> On 2017년 03월 20일 16:59, Baolin Wang wrote: >>>>> 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 <baolin.wang@xxxxxxxxxx> >>>>> --- >>>>> .../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 >>>> >>>> It is 'extcon-usb-gpio' instead of 'extcon-gpio'. >>> >>> Sure. >> >> "extcon-gpio" is not a vendor, so don't make it a vendor prefix. > > OK. > >> >>>>> +level trigger. If not specified defaults to false, gpio's interrupt flag >>>>> +defaults to edge trigger. >>>> >>>> I understand why you need the new flag. >>>> But, I'm not sure it is right way to add the new flag for interrupt flag. >>>> >>>> IMHO, I think that we need to find the more proper way to get the interrupt flag >>>> or maybe, we may need to implement the new helper api to get the interrupt >>>> flag for gpio pin when we use the gpio as the interrupt source, >>> >>> Yes, I agree with you. We already have helper functions to get >>> interrupt flag from device tree, but we can not get the irq number of >>> GPIO to configure in device tree, then I introduce one new flag to >>> indicate the trigger type. But I like to change the patch if there are >>> any good suggestion. Thanks. >> >> The extcon binding needs an overhaul in general. I'm not going to take >> extensions to a broken binding. What's needed is a USB connector >> binding like we have for HDMI and other video connectors. And for >> USB-C, those need to be combined. Could you elaborate on how to make an overhaul for the extcon binding? I can help to do that and then we can consider to modify my patch. Thanks. > > I am not sure I understand your points correctly, could you elaborate > on how to modify for extcon? Thanks. > > -- > Baolin.wang > Best Regards -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
