diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2011-04-27 21:54:21 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-03 21:09:31 +0400 |
| commit | bf5417152154038bbae429e2357731b1dad03328 (patch) | |
| tree | 4fd2b96a78e1ff270160400af4dce67953bef622 /drivers/usb/host/octeon2-common.c | |
| parent | f5ced99725d05f521ef0f597e688c19835e59c55 (diff) | |
| download | linux-bf5417152154038bbae429e2357731b1dad03328.tar.xz | |
usb: octeon2-common.c: Configure ports for proper electrical characteristics.
Additional PHY tuning is needed to obtain compliant 'eye' diagram
electrical characteristics.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/octeon2-common.c')
| -rw-r--r-- | drivers/usb/host/octeon2-common.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/host/octeon2-common.c b/drivers/usb/host/octeon2-common.c index 5a0feed03561..aef6364d6314 100644 --- a/drivers/usb/host/octeon2-common.c +++ b/drivers/usb/host/octeon2-common.c @@ -176,8 +176,10 @@ end_clock: for (i = 0; i <= 1; i++) { port_ctl_status.u64 = cvmx_read_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0)); - /* Set txvreftune to 15 to obtain complient 'eye' diagram. */ + /* Set txvreftune to 15 to obtain compliant 'eye' diagram. */ port_ctl_status.s.txvreftune = 15; + port_ctl_status.s.txrisetune = 1; + port_ctl_status.s.txpreemphasistune = 1; cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0), port_ctl_status.u64); } |