Re: where to add imx-udc-mx27 in device tree

On Tue, Aug 5, 2014 at 9:06 AM, Priebe, Sebastian
[off-list ref] wrote:

Hello,

I am trying to add an USB gadget to my device tree and I am using modules for my gadgets (serial and mass-storage).
&usbotg {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_usbotg>;
        dr_mode = "peripheral";
        phy_type = "utmi_wide";
        status = "okay";
};

Take a look at arch/arm/boot/dts/imx27-eukrea-cpuimx27.dtsi for an example.

The udc driver is CONFIG_USB_CHIPIDEA_UDC=y.

There is also the commit below in linux-next (not in 3.16) that select
the gadget driver for imx_v4_v5_defconfig.

Author: Fabio Estevam [off-list ref]
Date:   Wed Jun 25 17:28:53 2014 -0300

    ARM: imx_v4_v5_defconfig: Add USB device options

    Allow USB device to work by default.

    Signed-off-by: Fabio Estevam [off-list ref]
    Signed-off-by: Shawn Guo [off-list ref]

diff --git a/arch/arm/configs/imx_v4_v5_defconfig b/arch/arm/configs/imx_v4_v5_d
index 68abce9..090de01 100644
--- a/arch/arm/configs/imx_v4_v5_defconfig
+++ b/arch/arm/configs/imx_v4_v5_defconfig

@@ -159,6 +159,8 @@ CONFIG_USB_CHIPIDEA=y
 CONFIG_USB_CHIPIDEA_UDC=y
 CONFIG_USB_CHIPIDEA_HOST=y
 CONFIG_NOP_USB_XCEIV=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_ETH=m
 CONFIG_MMC=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y
--

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