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| author | Richard Zhao <richard.zhao@freescale.com> | 2012-09-12 14:58:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-12 11:20:38 -0700 |
| commit | 86ad01a907d7856edc07d8b49260c39520c0e932 (patch) | |
| tree | 5669d59eb44bb4b8f778bbdbb58a4b41b2e32da1 /drivers/usb/chipidea | |
| parent | b4dbb258b67b12fff4c9df56983934e11813c404 (diff) | |
| download | linux-86ad01a907d7856edc07d8b49260c39520c0e932.tar.bz2 | |
USB: chipidea: delay 2ms before read ID status at probe time
The ID pin needs 1ms debounce time, even at probe time. We delay 2ms
to be on the safe side.
Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 1083585fad00..3c3ed77a55bb 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -462,6 +462,8 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev) if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) { ci->is_otg = true; + /* ID pin needs 1ms debouce time, we delay 2ms for safe */ + mdelay(2); ci->role = ci_otg_role(ci); } else { ci->role = ci->roles[CI_ROLE_HOST] |