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| author | William Wu <william.wu@rock-chips.com> | 2017-06-02 11:20:23 +0800 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2017-06-06 14:50:22 +0530 |
| commit | fbbe98cd44508def1c6b7f98d5dc676d23bc9031 (patch) | |
| tree | 905a3ffcc7c423da80a0e5851428cce8288512c2 /drivers/phy | |
| parent | 6d6ce40f63af9860ba12e6540fc9c9feb4338a1d (diff) | |
| download | op-kernel-dev-fbbe98cd44508def1c6b7f98d5dc676d23bc9031.zip op-kernel-dev-fbbe98cd44508def1c6b7f98d5dc676d23bc9031.tar.gz | |
phy: rockchip-inno-usb2: add a delay after phy resume
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>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c index 8efe78a..f12dc8d 100644 --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c @@ -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; } |
