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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/host/octeon2-common.c b/drivers/usb/host/octeon2-common.c
index aef6364d6314..d9df423f3d12 100644
--- 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);
 }