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authorRoger Quadros <rogerq@ti.com>2015-01-26 14:15:29 +0200
committerTony Lindgren <tony@atomide.com>2015-01-30 15:48:39 -0800
commitf56de327b4c41aa8dece7f32ab76571fac4bf586 (patch)
treeb30199320e2034156280abd5e4440bb5fa44ceff /arch/arm/boot/dts
parent87517d26d888014c1bc93f4a7df623c4f413ccfb (diff)
downloadlinux-linaro-stable-f56de327b4c41aa8dece7f32ab76571fac4bf586.tar.gz
ARM: dts: dra72-evm: 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). Gets USB peripheral mode to work on this EVM. Signed-off-by: Roger Quadros <rogerq@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts')
-rw-r--r--arch/arm/boot/dts/dra72-evm.dts31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index cacddd74c516..4d8711713610 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -8,6 +8,7 @@
/dts-v1/;
#include "dra72x.dtsi"
+#include <dt-bindings/gpio/gpio.h>
/ {
model = "TI DRA722";
@@ -24,6 +25,16 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
+
+ extcon_usb1: extcon_usb1 {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpio = <&pcf_gpio_21 1 GPIO_ACTIVE_HIGH>;
+ };
+
+ extcon_usb2: extcon_usb2 {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpio = <&pcf_gpio_21 2 GPIO_ACTIVE_HIGH>;
+ };
};
&dra7_pmx_core {
@@ -255,6 +266,18 @@
ti,palmas-long-press-seconds = <6>;
};
};
+
+ pcf_gpio_21: gpio@21 {
+ compatible = "ti,pcf8575";
+ reg = <0x21>;
+ lines-initial-states = <0x1408>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
&uart1 {
@@ -357,6 +380,14 @@
phy-supply = <&ldo4_reg>;
};
+&omap_dwc3_1 {
+ extcon = <&extcon_usb1>;
+};
+
+&omap_dwc3_2 {
+ extcon = <&extcon_usb2>;
+};
+
&usb1 {
dr_mode = "peripheral";
pinctrl-names = "default";