On Wed, Aug 6, 2014 at 9:44 AM, Priebe, Sebastian
<Sebastian.Priebe@xxxxxxxxx> wrote:
> And in our dts we have:
> &usbotg {
> compatible = "imx-udc-mx27";
This is not correct.
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_usbotg>;
> dr_mode = "peripheral";
> phy_type = "utmi_wide";
No utmi in mx27.
> status = "okay";
> /* what to do with workaround = FLS_USB2_WORKAROUND_ENGCM09152 ??? */
This erratum does not apply to mx27.
> };
>
> In our config we have:
> CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC=y
This option is for the non-dt driver. Device tree driver needs the
chipidea that I showed earlier.
As I mentioned before: in your dts file you should do something like
arch/arm/boot/dts/imx27-
eukrea-cpuimx27.dtsi:
&usbotg {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbotg>;
dr_mode = "otg";
phy_type = "ulpi";
disable-over-current;
status = "okay";
};
You don't need to pass the compatible line there. The compatible line
is already passed in the imx27.dtsi file:
usbotg: usb@10024000 {
compatible = "fsl,imx27-usb";
reg = <0x10024000 0x200>;
interrupts = <56>;
clocks = <&clks IMX27_CLK_USB_IPG_GATE>;
fsl,usbmisc = <&usbmisc 0>;
status = "disabled";
};
Also, if you still have issues please start a thread at arm linux
kernel or usb-devel mailing list as it would be a better place to
discuss this
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