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author | Ramneek Mehresh <ramneek.mehresh@freescale.com> | 2013-08-13 09:01:35 (GMT) |
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committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 07:32:41 (GMT) |
commit | e1e457f4eb95c625e553082195155c339ec8aade (patch) | |
tree | a2c34fe10395d7b65a4b0dbd7a1eb67bbb96679f /Kbuild | |
parent | 97310c32bb83a5240cd527478159934d4aa5f78b (diff) | |
download | linux-e1e457f4eb95c625e553082195155c339ec8aade.tar.xz |
fsl/usb: Workarourd for USB erratum-A005697
As per USB specification, in the Suspend state, the status bit does
not change until the port is suspended. However, there may be a delay
in suspending a port if there is a transaction currently in progress
on the bus.
In the USBDR controller, the PORTSCx[SUSP] bit changes immediately when
the application sets it and not when the port is actually suspended
Workaround for this issue involves waiting for a minimum of 10ms to
allow the controller to go into SUSPEND state before proceeding ahead
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Change-Id: I8d20619d7d62afc12981c2f913c3d3ec735f7e64
Reviewed-on: http://git.am.freescale.net:8181/3996
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Aggrwal Poonam-B10812 <Poonam.Aggrwal@freescale.com>
Reviewed-by: Rivera Jose-B46482 <Jose.G.Rivera@freescale.com>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions