korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-22 04:31:58 +08:00
Code Issues Packages Projects Releases Wiki Activity

phy: rockchip-inno-usb2: add a delay after phy resume

Browse Source 
When resume phy, it need about 1.5 ~ 2ms to wait for
utmi_clk which used for USB controller to become stable.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
William Wu 2017-06-02 11:20:23 +08:00 committed by Kishon Vijay Abraham I
parent 6d6ce40f63
commit fbbe98cd44
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
View File

@ -463,6 +463,9 @@ static int rockchip_usb2phy_power_on(struct phy *phy)
if (ret)
return ret;
/* waiting for the utmi_clk to become stable */
usleep_range(1500, 2000);
rport->suspended = false;
return 0;
}