Patch "ARM: dts: imx23-olinuxino: Fix dr_mode of usb0" has been added to the 3.14-stable tree

Patch "ARM: dts: imx23-olinuxino: Fix dr_mode of usb0" has been added to the 3.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm-dts-imx23-olinuxino-fix-dr_mode-of-usb0.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 0fdebe1a2f4d3a8fc03754022fabf8ba95e131a3 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Tue, 14 Apr 2015 20:37:26 +0000
Subject: ARM: dts: imx23-olinuxino: Fix dr_mode of usb0

From: Stefan Wahren <stefan.wahren@i2se.com>

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@ccbib.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Peter Chen <peter.chen@freescale.com>
Fixes: b49312948285 ("ARM: dts: imx23-olinuxino: Add USB host support")
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arm/boot/dts/imx23-olinuxino.dts |    1 +
 1 file changed, 1 insertion(+)

--- 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";
 		};


Patches currently in stable-queue which might be from stefan.wahren@i2se.com are

queue-3.14/arm-dts-imx23-olinuxino-fix-dr_mode-of-usb0.patch
queue-3.14/arm-dts-imx23-olinuxino-fix-polarity-of-led-gpio.patch
queue-3.14/arm-dts-imx28-fix-auart4-tx-dma-interrupt-name.patch