diff options
| author | Stephen Boyd <stephen.boyd@linaro.org> | 2016-12-28 14:57:06 -0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2017-01-20 15:27:35 +0800 |
| commit | 11893dae63da0f5b251cf7f9a24d64c8ff4771ff (patch) | |
| tree | 9978a7acdaff564f565f3b82173d012f19f523a7 /drivers/usb/chipidea/core.c | |
| parent | 1b8fc5a5253d593daff68378444f8fc4bc50af1a (diff) | |
usb: chipidea: msm: Handle phy power states
The ULPI phy on qcom platforms needs to be initialized and
powered on after a USB reset and before we toggle the run/stop
bit. Otherwise, the phy locks up and doesn't work properly. Hook
the phy initialization into the RESET event and the phy power off
into the STOPPED event.
Acked-by: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 367d02a02145..db69f6a0bf98 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -327,6 +327,7 @@ void hw_phymode_configure(struct ci_hdrc *ci) hw_write(ci, OP_PORTSC, PORTSC_STS, PORTSC_STS); } } +EXPORT_SYMBOL_GPL(hw_phymode_configure); /** * _ci_usb_phy_init: initialize phy taking in account both phy and usb_phy @@ -503,9 +504,12 @@ int hw_device_reset(struct ci_hdrc *ci) return ret; } - if (ci->platdata->notify_event) - ci->platdata->notify_event(ci, + if (ci->platdata->notify_event) { + ret = ci->platdata->notify_event(ci, CI_HDRC_CONTROLLER_RESET_EVENT); + if (ret) + return ret; + } /* USBMODE should be configured step by step */ hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE); |