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authorRoger Quadros <rogerq@ti.com>2015-01-26 14:15:30 +0200
committerTony Lindgren <tony@atomide.com>2015-01-30 15:48:39 -0800
commitf60db98eaa67e02915f01e11933501127bc004b0 (patch)
treebc05f99ee2c091564798dd3a4dfec2a16337f8a3 /arch
parentf56de327b4c41aa8dece7f32ab76571fac4bf586 (diff)
downloadlinux-linaro-stable-f60db98eaa67e02915f01e11933501127bc004b0.tar.gz
ARM: dts: am57xx-beagle-x15: Add extcon nodes for USB
On this EVM, the USB cable state has to be determined via the ID pin tied to a GPIO line. We use the gpio-usb-extcon driver to read the ID pin and the extcon framework to forward the USB cable state information to the USB driver so the controller can be configured in the right mode (host/peripheral). NOTE: the ports on this board cannot switch roles. They are configured either host or peripheral by hardwiring the respective ID pins. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/boot/dts/am57xx-beagle-x15.dts33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index c5d4ceabdd80..0e889eb62a59 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -88,6 +88,20 @@
gpio-fan,speed-map = <0 0>,
<13000 1>;
};
+
+ extcon_usb1: extcon_usb1 {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpio = <&gpio7 25 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&extcon_usb1_pins>;
+ };
+
+ extcon_usb2: extcon_usb2 {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpio = <&gpio7 24 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&extcon_usb2_pins>;
+ };
};
&dra7_pmx_core {
@@ -252,6 +266,17 @@
>;
};
+ extcon_usb1_pins: extcon_usb1_pins {
+ pinctrl-single,pins = <
+ 0x3ec (PIN_INPUT_PULLUP | MUX_MODE14) /* uart1_rtsn.gpio7_25 */
+ >;
+ };
+
+ extcon_usb2_pins: extcon_usb2_pins {
+ pinctrl-single,pins = <
+ 0x3e8 (PIN_INPUT_PULLUP | MUX_MODE14) /* uart1_ctsn.gpio7_24 */
+ >;
+ };
};
&i2c1 {
@@ -523,3 +548,11 @@
pinctrl-names = "default";
pinctrl-0 = <&usb1_pins>;
};
+
+&omap_dwc3_1 {
+ extcon = <&extcon_usb1>;
+};
+
+&omap_dwc3_2 {
+ extcon = <&extcon_usb2>;
+};