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From: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
To: shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org,
	marex-ynQEQJNshbs@public.gmane.org,
	kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	harald-95f8Dae0BrPYtjvyW6yDsg@public.gmane.org,
	peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org,
	Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
Subject: [PATCH] ARM: dts: imx23-olinuxino: Fix dr_mode of usb0
Date: Tue, 14 Apr 2015 20:37:26 +0000	[thread overview]
Message-ID: <1429043846-28731-1-git-send-email-stefan.wahren@i2se.com> (raw)

The dr_mode of usb0 on imx233-olinuxino is left to default "otg".
Since the green LED (GPIO2_1) on imx233-olinuxino is connected to the
same pin as USB_OTG_ID it's possible to disable USB host by LED toggling:

echo 0 > /sys/class/leds/green/brightness
[ 1068.890000] ci_hdrc ci_hdrc.0: remove, state 1
[ 1068.890000] usb usb1: USB disconnect, device number 1
[ 1068.920000] usb 1-1: USB disconnect, device number 2
[ 1068.920000] usb 1-1.1: USB disconnect, device number 3
[ 1069.070000] usb 1-1.2: USB disconnect, device number 4
[ 1069.450000] ci_hdrc ci_hdrc.0: USB bus 1 deregistered
[ 1074.460000] ci_hdrc ci_hdrc.0: timeout waiting for 00000800 in 11

This patch fixes the issue by setting dr_mode to "host" in the dts file.

Reported-by: Harald Geyer <harald-95f8Dae0BrPYtjvyW6yDsg@public.gmane.org>
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
---
 arch/arm/boot/dts/imx23-olinuxino.dts |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx23-olinuxino.dts b/arch/arm/boot/dts/imx23-olinuxino.dts
index 7e6eef2..3b2d74d 100644
--- a/arch/arm/boot/dts/imx23-olinuxino.dts
+++ b/arch/arm/boot/dts/imx23-olinuxino.dts
@@ -93,6 +93,7 @@
 
 	ahb@80080000 {
 		usb0: usb@80080000 {
+			dr_mode = "host";
 			vbus-supply = <&reg_usb0_vbus>;
 			status = "okay";
 		};
-- 
1.7.9.5

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             reply	other threads:[~2015-04-14 20:37 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-14 20:37 Stefan Wahren [this message]
     [not found] ` <1429043846-28731-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2015-04-14 20:43   ` [PATCH] ARM: dts: imx23-olinuxino: Fix dr_mode of usb0 Fabio Estevam
2015-04-15  2:59   ` Marek Vasut
2015-04-15  3:32   ` Peter Chen
2015-04-15 19:11     ` Stefan Wahren
2015-04-27 12:26   ` Shawn Guo

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