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usb: Configure octeon2 glue logic for proper uSOF cycle period.

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The reset value of the uSOF cycle period is incorrect.  Set it to
60,000 bits.  Without this, several commercial USB flash memory
devices and hubs fail to work properly.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Daney 2011-04-27 10:54:22 -07:00 • committed by Greg Kroah-Hartman
parent bf54171521
commit 14be249c96
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/octeon2-common.c
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@ -183,6 +183,9 @@ void octeon2_usb_clocks_start(void)
cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0),
port_ctl_status.u64);
}
/* Set uSOF cycle period to 60,000 bits. */
cvmx_write_csr(CVMX_UCTLX_EHCI_FLA(0), 0x20ull);
exit:
mutex_unlock(&octeon2_usb_clocks_mutex);
}