On Mon, Apr 25, 2016 at 10:09:20AM +0000, Jun Li wrote: > Hi > > > -----Original Message----- > > From: Peter Chen [mailto:hzpeterc...@gmail.com] > > Sent: Monday, April 25, 2016 2:23 PM > > To: Jun Li <jun...@nxp.com> > > Cc: Peter Chen <peter.c...@nxp.com>; linux-usb@vger.kernel.org; > > baolin.w...@linaro.org > > Subject: Re: [PATCH 5/5] doc: usb: ci-hdrc-usb2: add property usb-charger- > > detection > > > > On Mon, Apr 18, 2016 at 04:17:49PM +0800, Li Jun wrote: > > > Set this property if your usb module has usb charger detect function > > > and you want to use it. > > > > > > Signed-off-by: Li Jun <jun...@nxp.com> > > > --- > > > Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 2 ++ > > > 1 file changed, 2 insertions(+) > > > > > > diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > > > b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > > > index 1084e2b..52d269e 100644 > > > --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > > > +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > > > @@ -76,6 +76,8 @@ Optional properties: > > > needs to make sure it does not send more than 90% > > > maximum_periodic_data_per_frame. The use case is multiple > > transactions, but > > > less frame rate. > > > +- usb-charger-detection: use usb charger detect function provided by > > > +usb > > > + module; if your usb charger type detection done by PMIC, don't enable > > this. > > > > > > > If the user doesn't set it at dts, and detection is done by PMIC, would > > you show us the flow how it work at chipidea driver? > > This patch set only focus on charger type detection by usb module, so > PMIC case may not benefit from it. > > 1. If user is sure the charger detection process can't impact the usb > gadget enumeration, e.g. charger detection is automatically done > before vbus is detected(like Baolin's case), nothing needs added > at chipidea driver. Otherwise > 2. We need a simple sync, wait the PMIC driver gets charger type before > do gadget connect, this can be done in udc.c via > power_supply_get_property() > like what Baolin does in usb_charger_get_type_by_others() in charger.c. > > I intend to add the handling of case 2 by the real user of it. >
Ok. -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
