From: Daniel Tang
Date: Wed, 11 Feb 2015 04:44:58 +0000 (+0800)
Subject: Chipidea: Set connect-at-fullspeed bit when entering host mode if CI_HDRC_FORCE_FULLS...
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=905276c4319174d52de0e45fc9b22f599497be47;p=deliverable%2Flinux.git
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
---
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: