[3.19.y-ckt stable] Patch "ARM: dts: imx23-olinuxino: Fix dr_mode of usb0" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ARM: dts: imx23-olinuxino: Fix dr_mode of usb0

to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue

This patch is scheduled to be released in version 3.19.8-ckt1.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 5e9b23f3ba67b68f3839cbba7c428a834f676f48 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren at i2se.com>
Date: Tue, 14 Apr 2015 20:37:26 +0000
Subject: ARM: dts: imx23-olinuxino: Fix dr_mode of usb0

commit 0fdebe1a2f4d3a8fc03754022fabf8ba95e131a3 upstream.

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 at ccbib.org>
Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
Reviewed-by: Fabio Estevam <fabio.estevam at freescale.com>
Reviewed-by: Marek Vasut <marex at denx.de>
Acked-by: Peter Chen <peter.chen at freescale.com>
Fixes: b49312948285 ("ARM: dts: imx23-olinuxino: Add USB host support")
Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 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 839a3b9..8204539 100644
--- a/arch/arm/boot/dts/imx23-olinuxino.dts
+++ b/arch/arm/boot/dts/imx23-olinuxino.dts
@@ -94,6 +94,7 @@

 	ahb at 80080000 {
 		usb0: usb at 80080000 {
+			dr_mode = "host";
 			vbus-supply = <&reg_usb0_vbus>;
 			status = "okay";
 		};
--
1.9.1