releases/3.10.79/arm-dts-imx23-olinuxino-fix-dr_mode-of-usb0.patch

   1 From 0fdebe1a2f4d3a8fc03754022fabf8ba95e131a3 Mon Sep 17 00:00:00 2001
   2 From: Stefan Wahren <stefan.wahren@i2se.com>
   3 Date: Tue, 14 Apr 2015 20:37:26 +0000
   4 Subject: ARM: dts: imx23-olinuxino: Fix dr_mode of usb0
   5
   6 From: Stefan Wahren <stefan.wahren@i2se.com>
   7
   8 commit 0fdebe1a2f4d3a8fc03754022fabf8ba95e131a3 upstream.
   9
  10 The dr_mode of usb0 on imx233-olinuxino is left to default "otg".
  11 Since the green LED (GPIO2_1) on imx233-olinuxino is connected to the
  12 same pin as USB_OTG_ID it's possible to disable USB host by LED toggling:
  13
  14 echo 0 > /sys/class/leds/green/brightness
  15 [ 1068.890000] ci_hdrc ci_hdrc.0: remove, state 1
  16 [ 1068.890000] usb usb1: USB disconnect, device number 1
  17 [ 1068.920000] usb 1-1: USB disconnect, device number 2
  18 [ 1068.920000] usb 1-1.1: USB disconnect, device number 3
  19 [ 1069.070000] usb 1-1.2: USB disconnect, device number 4
  20 [ 1069.450000] ci_hdrc ci_hdrc.0: USB bus 1 deregistered
  21 [ 1074.460000] ci_hdrc ci_hdrc.0: timeout waiting for 00000800 in 11
  22
  23 This patch fixes the issue by setting dr_mode to "host" in the dts file.
  24
  25 Reported-by: Harald Geyer <harald@ccbib.org>
  26 Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
  27 Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
  28 Reviewed-by: Marek Vasut <marex@denx.de>
  29 Acked-by: Peter Chen <peter.chen@freescale.com>
  30 Fixes: b49312948285 ("ARM: dts: imx23-olinuxino: Add USB host support")
  31 Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
  32 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  33
  34 ---
  35  arch/arm/boot/dts/imx23-olinuxino.dts |    1 +
  36  1 file changed, 1 insertion(+)
  37
  38 --- a/arch/arm/boot/dts/imx23-olinuxino.dts
  39 +++ b/arch/arm/boot/dts/imx23-olinuxino.dts
  40 @@ -89,6 +89,7 @@
  41
  42         ahb@80080000 {
  43                 usb0: usb@80080000 {
  44 +                       dr_mode = "host";
  45                         vbus-supply = <&reg_usb0_vbus>;
  46                         status = "okay";
  47                 };