From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Quadros Subject: [PATCH v2 3/7] ARM: dts: dra7-evm: Add extcon nodes for USB Date: Mon, 26 Jan 2015 14:15:28 +0200 Message-ID: <1422274532-9488-4-git-send-email-rogerq@ti.com> References: <1422274532-9488-1-git-send-email-rogerq@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1422274532-9488-1-git-send-email-rogerq@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: balbi@ti.com, tony@atomide.com, myungjoo.ham@samsung.com, cw00.choi@samsung.com Cc: george.cherian@ti.com, nsekhar@ti.com, devicetree@vger.kernel.org, linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros List-Id: devicetree@vger.kernel.org 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 Reviewed-by: Felipe Balbi Acked-by: Felipe Balbi --- 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 ad4118f..746cddb 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-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 @@ }; }; }; + + 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