From mboxrd@z Thu Jan  1 00:00:00 1970
From: peter.chen@freescale.com (Peter Chen)
Date: Wed, 15 Apr 2015 11:32:12 +0800
Subject: [PATCH] ARM: dts: imx23-olinuxino: Fix dr_mode of usb0
In-Reply-To: <1429043846-28731-1-git-send-email-stefan.wahren@i2se.com>
References: <1429043846-28731-1-git-send-email-stefan.wahren@i2se.com>
Message-ID: <20150415033211.GB29095@shlinux2>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Tue, Apr 14, 2015 at 08:37:26PM +0000, Stefan Wahren wrote:
> 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>
> ---
>  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 at 80080000 {
>  		usb0: usb at 80080000 {
> +			dr_mode = "host";
>  			vbus-supply = <&reg_usb0_vbus>;
>  			status = "okay";
>  		};
> -- 
> 1.7.9.5
> 

If this board has only host function, I am ok for it.

Acked-by: Peter Chen <peter.chen@freescale.com>

-- 

Best Regards,
Peter Chen