]> git.baikalelectronics.ru Git - kernel.git/commit
phy: rockchip-inno-usb2: correct 480MHz output clock stable time
authorWilliam Wu <wulf@rock-chips.com>
Tue, 15 Nov 2016 03:54:07 +0000 (11:54 +0800)
committerKishon Vijay Abraham I <kishon@ti.com>
Fri, 18 Nov 2016 12:49:15 +0000 (18:19 +0530)
commit17151f334c07b61b2e79119b6706f0f503bd3b52
tree74c95c4f985dba5d8638aa9ec9db192899813e84
parentf309250eb8daf526480d7671ecf6c8fe9df71049
phy: rockchip-inno-usb2: correct 480MHz output clock stable time

We found that the system crashed due to 480MHz output clock of
USB2 PHY was unstable after clock had been enabled by gpu module.

Theoretically, 1 millisecond is a critical value for 480MHz
output clock stable time, so we try to change the delay time
to 1.2 millisecond to avoid this issue.

And the commit ed907fb1d7c3 ("phy: rockchip-inno-usb2: correct
clk_ops callback") used prepare callbacks instead of enable
callbacks to support gate a clk if the operation may sleep. So
we can switch from delay to sleep functions.

Also fix a spelling error from "waitting" to "waiting".

Signed-off-by: William Wu <wulf@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
drivers/phy/phy-rockchip-inno-usb2.c