diff options
| author | Li Jun <jun.li@freescale.com> | 2015-07-22 13:59:50 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@nxp.com> | 2016-01-14 10:59:21 -0600 |
| commit | 999482b251bcfa6b97183de2806a745b41c3db89 (patch) | |
| tree | 5646b9ef0f57ed1826b336b73b307d43afe77a12 /drivers/usb/chipidea/ci_hdrc_imx.c | |
| parent | f31b9c209571f7a36dbdde6df22576a2b618b6be (diff) | |
MLK-11272 usb: chipidea: otg: data pulse detection work around for imx7d
i.MX7D has a silicon issue on full speed termination after A device ends
a session, which causes it can not detect data pulse from B device if
A device isn't in low power mode, this patch work around it by override
Termsel bit to be 1 for FS mode termination. After A device detects data
pulse or turns on vbus, this override will be cleared and disabled.
Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit 1ec37968c892efbb1925784446a75d35e8bda228)
Diffstat (limited to 'drivers/usb/chipidea/ci_hdrc_imx.c')
| -rw-r--r-- | drivers/usb/chipidea/ci_hdrc_imx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 362eb7d4703b..e969156382d4 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -347,6 +347,14 @@ static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned event) return ret; } break; + case CI_HDRC_IMX_TERM_SELECT_OVERRIDE_FS: + if (data->usbmisc_data) + return imx_usbmisc_term_select_override( + data->usbmisc_data, true, 1); + case CI_HDRC_IMX_TERM_SELECT_OVERRIDE_OFF: + if (data->usbmisc_data) + return imx_usbmisc_term_select_override( + data->usbmisc_data, false, 0); default: dev_dbg(dev, "unknown event\n"); } |