From 905276c4319174d52de0e45fc9b22f599497be47 Mon Sep 17 00:00:00 2001 From: Daniel Tang Date: Wed, 11 Feb 2015 12:44:58 +0800 Subject: [PATCH] Chipidea: Set connect-at-fullspeed bit when entering host mode if CI_HDRC_FORCE_FULLSPEED is set in the platform data PORTSC_PFSC is not set on entering host mode which means the USB OTG controller will attempt to enumerate USB devices at high speed even when the CI_HDRC_FORCE_FULLSPEED flag is set in the platform data. This patch ensures it is set right before host mode operations begin if needed. Signed-off-by: Daniel Tang Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/host.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 48731d0bab35..12edbd0c998a 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -133,6 +133,9 @@ static int host_start(struct ci_hdrc *ci) if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); + if (ci->platdata->flags & CI_HDRC_FORCE_FULLSPEED) + hw_write(ci, OP_PORTSC, PORTSC_PFSC, PORTSC_PFSC); + return ret; put_hcd: