Thanks Marc, these few lines are very useful since I need 2 USB hosts and
don't want to add a USB hub. About the supply, maybe adding inductor
filters like on USB1 schematic would be better.
Vince.
Le jeudi 17 avril 2014 12:01:27 UTC+2, marc...@gmail.com a écrit :
>
> Hello
> I have finally managed to get my hands on an BBB and started to try and
> get my system up and running the way I need by building a kernel (3.14.1).
>
> I am attempting to use the USB client port (USB0) in host mode and think I
> have done all the things necessary to get this working:
>
> Kernel config has EHCI enabled and set to host only
> Hardware mod on the board to short pins 4&5 of micro socket to force
> USB-ID low to indicate host mode.
> Changed the arch/arm/boot/dts/am335x-bone-common.dtsi file to put it into
> host mode
> u...@47401000 <javascript:> {
> status = "okay";
> dr_mode = "host";
> };
> u...@47401800 <javascript:> {
> status = "okay";
> dr_mode = "host";
> };
>
> No matter what I plug in nothing gets identified ???
>
> Plugging into the USB1 host port is fine so the kernel is configured
> correctly.
>
>
> Boot log shows ports being identified:
> [ 2.057294] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
> [ 2.063996] musb-hdrc musb-hdrc.0.auto: new USB bus registered,
> assigned bus number 1
> [ 2.072673] usb usb1: New USB device found, idVendor=1d6b,
> idProduct=0002
> [ 2.079868] usb usb1: New USB device strings: Mfr=3, Product=2,
> SerialNumber=1
> [ 2.087467] usb usb1: Product: MUSB HDRC host driver
> [ 2.092722] usb usb1: Manufacturer: Linux 3.14.1 musb-hcd
> [ 2.098402] usb usb1: SerialNumber: musb-hdrc.0.auto
> [ 2.104856] hub 1-0:1.0: USB hub found
> [ 2.108880] hub 1-0:1.0: 1 port detected
> [ 2.117574] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
> [ 2.124275] musb-hdrc musb-hdrc.1.auto: new USB bus registered,
> assigned bus number 2
> [ 2.133045] usb usb2: New USB device found, idVendor=1d6b,
> idProduct=0002
> [ 2.140253] usb usb2: New USB device strings: Mfr=3, Product=2,
> SerialNumber=1
> [ 2.147851] usb usb2: Product: MUSB HDRC host driver
> [ 2.153105] usb usb2: Manufacturer: Linux 3.14.1 musb-hcd
> [ 2.158786] usb usb2: SerialNumber: musb-hdrc.1.auto
> [ 2.165268] hub 2-0:1.0: USB hub found
> [ 2.169312] hub 2-0:1.0: 1 port detected
>
> Any ideas ???
>
> Thanks
> marc
>
>
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