Enable USB Host on ccardimx28 and DEY?

Embedded Devices Linux
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1

I have Digi Embedded Yocto installed on a ccardimx28 and cannot use USB Host. It acts like usbhost is not available on the board, however it’s listed in the MACHINE_FEATURES of the build scripts.

The kernel log shows many USB drivers, but not the USB host itself:

root@ccardimx28js:~# dmesg | grep -i usb
[ 0.470917] usb0_vbus: 5000 mV
[ 0.479763] usbcore: registered new interface driver usbfs
[ 0.485560] usbcore: registered new interface driver hub
[ 0.491286] usbcore: registered new device driver usb
[ 1.203458] usbcore: registered new interface driver asix
[ 1.209042] usbcore: registered new interface driver ax88179_178a
[ 1.215415] usbcore: registered new interface driver cdc_ether
[ 1.221585] usbcore: registered new interface driver smsc95xx
[ 1.227507] usbcore: registered new interface driver net1080
[ 1.233426] usbcore: registered new interface driver cdc_subset
[ 1.239510] usbcore: registered new interface driver zaurus
[ 1.245466] usbcore: registered new interface driver cdc_ncm
[ 1.251156] ehci_hcd: USB 2.0 ‘Enhanced’ Host Controller (EHCI) Driver
[ 1.257992] usbcore: registered new interface driver usb-storage
[ 1.417958] usbcore: registered new interface driver usbhid
[ 1.423661] usbhid: USB HID core driver

root@ccardimx28js:~# lsusb
unable to initialize libusb: -99

How do I enable USB?

Edit: Some additional information: Looks like this is definitely a Linux issue, because U-boot has no problem enumerating USB devices on the same hardware:

CCARDIMX28 # usb reset
(Re)start USB…
USB0: USB EHCI 1.00
scanning bus 0 for devices… 2 USB Device(s) found
scanning usb for storage devices… 1 Storage Device(s) found
scanning usb for ethernet devices… 0 Ethernet Device(s) found
CCARDIMX28 # usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
±2 Mass Storage (480 Mb/s, 200mA)
Lexar USB Flash Drive AAAFA589T0JN1TJW

2

After consulting with Digi, this is resolved by the following patch. I suspect it will be included in the next release of DEY.

diff --git a/meta-digi-arm/recipes-kernel/linux/linux-dey_3.10.bb b/meta-digi-arm/recipes-kernel/linux/linux-dey_3.10.bb
index ea2b19878a83…97724edd1f99 100644
— a/meta-digi-arm/recipes-kernel/linux/linux-dey_3.10.bb
+++ b/meta-digi-arm/recipes-kernel/linux/linux-dey_3.10.bb
@@ -54,6 +54,7 @@ do_update_dts_mxs() {
config_dts enable ‘_ethernet1.dtsi’
else
config_dts disable ‘_ethernet1.dtsi’

  •   config_dts enable '_usb1.dtsi'
    fi
    if [ -n “${HAVE_BT}” ]; then
    config_dts enable ‘_auart0_bluetooth.dtsi’
3

Hi thayward, I have the opposite problem. My Linux detects the USB Host, but u-boot doesn’t.
Which type of card do you use and what u-boot version?
Thanks!