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ARM: dts: dra7-evm: Add extcon nodes for USB

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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>
This commit is contained in:
Roger Quadros 2015-01-26 14:15:28 +02:00 committed by Tony Lindgren
parent 72d032266b
commit 87517d26d8
1 changed files with 31 additions and 0 deletions
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31
arch/arm/boot/dts/dra7-evm.dts
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@ -26,6 +26,16 @@ mmc2_3v3: fixedregulator-mmc2 {
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>;
};
vtt_fixed: fixedregulator-vtt {
compatible = "regulator-fixed";
regulator-name = "vtt_fixed";
@ -391,6 +401,19 @@ ldousb_reg: ldousb {
};
};
};
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>;
};
};
&i2c2 {
@ -520,6 +543,14 @@ partition@9 {
};
};
&omap_dwc3_1 {
extcon = <&extcon_usb1>;
};
&omap_dwc3_2 {
extcon = <&extcon_usb2>;
};
&usb1 {
dr_mode = "peripheral";
pinctrl-names = "default";