Usb controller require the clk from phy to work normally. In the
current code, if the dr_mode is set to peripheral and limit to
high speed, there are two cases that usb controller will work
abnormally due to phy power off.
1. The USB cable is not plug in when system start up, at this
time, the otg_sm_work will call rockchip_usb2phy_power_off to
suspend phy. However, if the upper layer uses configfs to operate
the controller after phy power off, controller will work abnormally.
2. Plug in the usb cable and start up the system, the controller
works in peripheral mode and PC recongnize it. IF we unplug the
usb cable, the vbus will not detected, otg_sm_work will also call
rockchip_usb2phy_power_off to suspend phy, when the upper layer
use configfs to operate the controller, phy has been suspended,
controller will work abnormally.
To fix these cases, this patch add a new property "rockchip,dis-u2-
susphy" to avoid phy power off.
Signed-off-by: Jianwei Zheng <jianwei.zheng@rock-chips.com>
Change-Id: I6c9921c8060747667d7bedb2cf76a38a896c05f5
5df41387b9
