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| From | Peter Chen <hzpeterchen@gmail.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 04/22] usb: chipidea: Only read/write OTGSC from one place |
| Date | Sun, 07 Aug 2016 01:00:02 +0200 |
| Message-ID | <s3iJs-3yz-5@gated-at.bofh.it> (permalink) |
| References | <rSpXX-4yB-3@gated-at.bofh.it> <rSpXY-4yB-59@gated-at.bofh.it> <rSAgF-2PC-1@gated-at.bofh.it> <s3iJs-3yz-7@gated-at.bofh.it> |
| X-Original-To | Stephen Boyd <stephen.boyd@linaro.org> |
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| X-Original-Cc | linux-usb@vger.kernel.org, Felipe Balbi <balbi@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Neil Armstrong <narmstrong@baylibre.com>, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson <bjorn.andersson@linaro.org>, Peter Chen <peter.chen@nxp.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Andy Gross <andy.gross@linaro.org>, "Ivan T. Ivanov" <iivanov.xz@gmail.com>, linux-arm-kernel@lists.infradead.org |
| X-Original-Date | Sat, 6 Aug 2016 15:42:58 +0800 |
| X-Original-Message-ID | <20160806074258.GA12298@shlinux2> |
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| Xref | csiph.com linux.kernel:1457400 |
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On Fri, Aug 05, 2016 at 02:41:37PM -0700, Stephen Boyd wrote: > Quoting Peter Chen (2016-07-08 02:14:57) > > On Thu, Jul 07, 2016 at 03:20:55PM -0700, Stephen Boyd wrote: > > > diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c > > > index 03b6743461d1..a6fc60934297 100644 > > > --- a/drivers/usb/chipidea/otg.c > > > +++ b/drivers/usb/chipidea/otg.c > > > @@ -104,7 +104,31 @@ void ci_handle_vbus_change(struct ci_hdrc *ci) > > > usb_gadget_vbus_disconnect(&ci->gadget); > > > } > > > > > > -#define CI_VBUS_STABLE_TIMEOUT_MS 5000 > > > +/** > > > + * When we switch to device mode, the vbus value should be lower > > > + * than OTGSC_BSV before connecting to host. > > > + * > > > + * @ci: the controller > > > + * > > > + * This function returns an error code if timeout > > > + */ > > > +static int hw_wait_otgsc_bsv(struct ci_hdrc *ci) > > > > I think the function name should reflect "we wait for vbus lower than bsv" > > Care to change one? > > > > Sure, something like hw_wait_vbus_lower_bsv()? Agree. -- Best Regards, Peter Chen
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Re: [PATCH v2 04/22] usb: chipidea: Only read/write OTGSC from one place Peter Chen <hzpeterchen@gmail.com> - 2016-08-07 01:00 +0200
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