diff options
| author |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-01-19 11:44:40 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-26 18:49:20 +0100 |
| commit | 00c5c96886faeb6d2f3dd4369b9b92eee4d4286a (patch) | |
| tree | a98cb861341a377bab7bcaafb53f2cf540ecbea0 /drivers/staging/hikey9xx | |
| parent | staging: hikey9xx: phy-hi3670-usb3: use bitfield macros (diff) | |
| download | linux-dev-00c5c96886faeb6d2f3dd4369b9b92eee4d4286a.tar.xz linux-dev-00c5c96886faeb6d2f3dd4369b9b92eee4d4286a.zip | |
staging: hikey9xx: phy-hi3670-usb3: adjust retry logic
Instead of running a loop up to 100k times, add a small
delay inside it, running it up to 10 times, waiting up
to 100-200 us.
It should be noticed that I don't have the datasheet for
this PHY. So, not sure if this time will cover all
situations.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/b653d7d6073de176598a5026c41b1a845f360c9e.1611052729.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/hikey9xx')
| -rw-r--r-- | drivers/staging/hikey9xx/phy-hi3670-usb3.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/staging/hikey9xx/phy-hi3670-usb3.c b/drivers/staging/hikey9xx/phy-hi3670-usb3.c index 722cabaa9bd9..cffe6c58dfd7 100644 --- a/drivers/staging/hikey9xx/phy-hi3670-usb3.c +++ b/drivers/staging/hikey9xx/phy-hi3670-usb3.c @@ -185,7 +185,7 @@ static int hi3670_phy_cr_start(struct regmap *usb31misc, int direction) static int hi3670_phy_cr_wait_ack(struct regmap *usb31misc) { u32 reg; - int retry = 100000; + int retry = 10; int ret; while (retry-- > 0) { @@ -198,6 +198,8 @@ static int hi3670_phy_cr_wait_ack(struct regmap *usb31misc) ret = hi3670_phy_cr_clk(usb31misc); if (ret) return ret; + + usleep_range(10, 20); } return -ETIMEDOUT; |