]> git.baikalelectronics.ru Git - kernel.git/commit
usb: renesas_usbhs: add wait after initialization for R-Car Gen3
authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Thu, 20 Oct 2016 04:19:19 +0000 (13:19 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 24 Oct 2016 12:35:46 +0000 (14:35 +0200)
commitb76032396d7958f006bccf5fb2535beb5526837c
treea445204f4d0a5bdf22f02741b373a56a700e11ea
parented6d6f8f42d7302f6f9b6245f34927ec20d26c12
usb: renesas_usbhs: add wait after initialization for R-Car Gen3

Since the controller on R-Car Gen3 doesn't have any status registers
to detect initialization (LPSTS.SUSPM = 1) and the initialization needs
up to 45 usec, this patch adds wait after the initialization. Otherwise,
writing other registers (e.g. INTENB0) will fail.

Fixes: de18757e272d ("usb: renesas_usbhs: add R-Car Gen3 power control")
Cc: <stable@vger.kernel.org> # v4.6+
Cc: <balbi@kernel.org>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/renesas_usbhs/rcar3.c