From: peter.chen@freescale.com (Peter Chen)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH v5 3/7] usb: chipidea: add otg id switch and vbus connect/disconnect detect
Date: Mon, 28 Jan 2013 11:32:32 +0800 [thread overview]
Message-ID: <20130128033203.GC2673@nchen-desktop> (raw)
In-Reply-To: <87wqv1bnyd.fsf@ashishki-desk.ger.corp.intel.com>
On Fri, Jan 25, 2013 at 11:40:10AM +0200, Alexander Shishkin wrote:
> Peter Chen <peter.chen@freescale.com> writes:
>
> > On Thu, Jan 24, 2013 at 05:25:17PM +0200, Alexander Shishkin wrote:
>
> What doesn't happen is the reset into device mode (unless you have
> _REGS_SHARED set, which by the way seems a bit misleading) and we're
> still doing nothing till the vbus interrupt comes. So the REGS_SHARED is
> the real problem in this case.
Yes, at imx it sets REGS_SHARD. The REGS_SHARED is needed at below
conditions:
- System boots up with usb device at OTG port using A-plug cable, at this
situation, any gadget initialization should not do any registers operation,
the related functions are udc_start and ci13xxx_start.
- At udc_irq, we do not want any wakeup, id, and host interrupt to call
internal code.
>
--
Best Regards,
Peter Chen
next prev parent reply other threads:[~2013-01-28 3:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 1:56 [RESEND PATCH v5 0/7] Add fully tested id switch and vbus connect detect support for Chipidea Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 1/7] Revert "USB: chipidea: add vbus detect for udc" Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 2/7] usb: chipidea: add otg file Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 3/7] usb: chipidea: add otg id switch and vbus connect/disconnect detect Peter Chen
2013-01-24 14:06 ` Alexander Shishkin
2013-01-25 6:13 ` Peter Chen
2013-01-24 15:25 ` Alexander Shishkin
2013-01-25 6:28 ` Peter Chen
2013-01-25 9:40 ` Alexander Shishkin
2013-01-28 3:32 ` Peter Chen [this message]
2013-01-30 6:06 ` kishon
2013-01-30 6:57 ` Peter Chen
2013-01-30 10:31 ` Alexander Shishkin
2013-01-31 2:02 ` Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 4/7] usb: chipidea: consolidate ci_role_driver's API for both roles Peter Chen
2013-01-24 14:35 ` Alexander Shishkin
2013-01-25 3:30 ` Peter Chen
2013-01-25 12:12 ` Alexander Shishkin
2013-01-28 5:21 ` Peter Chen
2013-01-29 9:37 ` Alexander Shishkin
2013-01-30 6:52 ` Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 5/7] usb: chipidea: udc: add pullup/pulldown dp at hw_device_state Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 6/7] usb: chipidea: udc: retire the flag CI13_PULLUP_ON_VBUS Peter Chen
2013-01-21 1:56 ` [RESEND PATCH v5 7/7] usb: chipidea: imx: add internal vbus regulator control Peter Chen
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