imx283 and USB0_ID mapping

mmaaxx — Mon, 30 Apr 2012 15:33:26 GMT

Hello,

I'm working with the custom board, that has imx283, and USB0 circuit same as iMX28 EVK, except that USB0_ID signal is router to a different pin of the micro-controller. On the EVK (288) it goes to PINID_AUART1_RTS, but there are no such pin on the 283 series. So it is router to the PINID_PWM2.

I changed pin mapping in the mx28evk_pins.c to this:

#if defined(CONFIG_USB_OTG)
{
.name = "usb0_id",
.id = PINID_GPMI_RDY0,
.fun = PIN_FUN3,
.data = 1,
.pull = 1,
.pullup = 1,

},
#endif

Then I rebuild the kernel, and tried to make USB0-OTG work as a device, using g_serial module, with no luck. It simply didn't worked, not a sign of any USB activity on Host (my PC) or Device (imx283) side. I also tried PINID_PWM2/PIN_FUN2 with same results.

USB-OTG in a device mode works just fine, on imx28-EVK, when I use same kernel with USB0_ID pin mapped to PINID_AUART1_RTS.

Does anybody know if there are other places/definitions that needs to be changed, when moving USB0_ID functionality to a different pin?

I've spent couple days reviewing USB source code, trying to find a hard-coded reference to this pin, IRQ/DMA setup that could be affected by moving the pin, and haven't found anything.

Thanks!

Re: imx283 and USB0_ID mapping

admin — Tue, 15 May 2012 19:25:46 GMT

does your custom board have 5V supply to iMX283? if not, your USB won't work.

Re: imx283 and USB0_ID mapping

mmaaxx — Tue, 15 May 2012 19:33:59 GMT

Yeah, we figured that this supply is related to USB-Device, at this point. And our board has nothing connected to it.

Thank you for the reply Richard!

Richard He said:

does your custom board have 5V supply to iMX283? if not, your USB won't work.

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imx283 and USB0_ID mapping

Re: imx283 and USB0_ID mapping

Re: imx283 and USB0_ID mapping