Re: [PATCH 3/5] ARM: dts: dra7-evm: Add extcon nodes for USB
From: Felipe Balbi <hidden>
Date: 2015-01-20 19:03:05
Also in:
linux-omap, lkml
On Mon, Jan 19, 2015 at 07:52:20PM +0200, Roger Quadros wrote:
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 <redacted>
Reviewed-by: Felipe Balbi <redacted> Acked-by: Felipe Balbi <redacted>
quoted hunk ↗ jump to hunk
--- arch/arm/boot/dts/dra7-evm.dts | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts index 10b725c..47d9a06 100644 --- a/arch/arm/boot/dts/dra7-evm.dts +++ b/arch/arm/boot/dts/dra7-evm.dts@@ -26,6 +26,16 @@ regulator-max-microvolt = <3300000>; }; + extcon_usb1: extcon_usb1 { + compatible = "linux,extcon-usb"; + id-gpio = <&pcf_gpio_21 1 GPIO_ACTIVE_HIGH>; + }; + + extcon_usb2: extcon_usb2 { + compatible = "linux,extcon-usb"; + id-gpio = <&pcf_gpio_21 2 GPIO_ACTIVE_HIGH>; + }; + vtt_fixed: fixedregulator-vtt { compatible = "regulator-fixed"; regulator-name = "vtt_fixed";@@ -391,6 +401,19 @@ }; }; }; + + 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 @@ }; }; +&omap_dwc3_1 { + extcon = <&extcon_usb1>; +}; + +&omap_dwc3_2 { + extcon = <&extcon_usb2>; +}; + &usb1 { dr_mode = "peripheral"; pinctrl-names = "default";-- 2.1.0
-- balbi
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