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USB: s3c-hsotg: SoftDisconnect minimum 3ms

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The shortest period SoftDisconnect can be asserted for is 3 milliseconds
according to the V210 datasheet, so ensure that we add an msleep() to
the registration code to enforce this.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ben Dooks 2010-05-25 05:36:51 +01:00 committed by Greg Kroah-Hartman
parent 0f002d2005
commit 2e0e0777ec
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/gadget/s3c-hsotg.c
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@ -2599,6 +2599,9 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
writel(S3C_DCTL_CGOUTNak | S3C_DCTL_CGNPInNAK,
hsotg->regs + S3C_DCTL);
/* must be at-least 3ms to allow bus to see disconnect */
msleep(3);
/* remove the soft-disconnect and let's go */
__bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon);