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

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>

diff --git a/drivers/usb/host/octeon2-common.c b/drivers/usb/host/octeon2-common.c
index aef6364d63143c8537a06cc4d43ab3e1e14eece5..d9df423f3d1209872544f53657e6db1577a4082f 100644 (file)
--- a/drivers/usb/host/octeon2-common.c
+++ b/drivers/usb/host/octeon2-common.c
@@ -183,6 +183,9 @@ end_clock:
                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);
 }