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| author | Tom Rini <trini@konsulko.com> | 2015-05-05 14:57:23 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-05-05 14:57:23 -0400 |
| commit | d81572c272d4b0980fb9b8a02e1357090b002398 (patch) | |
| tree | 4b2f774d628ab51944f0ba1ff83c15ef6b082a0f /drivers/usb/host | |
| parent | 1131d4e22cf8f13d0dabaad7f1b84d9baffdfbd6 (diff) | |
| parent | 8b0044ff5942943eaa49935f49d5006b346a60f8 (diff) | |
| download | u-boot-imx-d81572c272d4b0980fb9b8a02e1357090b002398.zip u-boot-imx-d81572c272d4b0980fb9b8a02e1357090b002398.tar.gz u-boot-imx-d81572c272d4b0980fb9b8a02e1357090b002398.tar.bz2 | |
Merge git://git.denx.de/u-boot-mpc85xx
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 2dca524..5fd618d 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -138,6 +138,16 @@ int ehci_hcd_init(int index, enum usb_init_type init, if (has_erratum_a007798()) set_txfifothresh(ehci, TXFIFOTHRESH); + if (has_erratum_a004477()) { + /* + * When reset is issued while any ULPI transaction is ongoing + * then it may result to corruption of ULPI Function Control + * Register which eventually causes phy clock to enter low + * power mode which stops the clock. Thus delay is required + * before reset to let ongoing ULPI transaction complete. + */ + udelay(1); + } return 0; } |