Hi Eric, On Fri, Nov 21, 2014 at 11:20:37AM +0100, Eric Bénard wrote: > Hi Maxime, > > Le Thu, 20 Nov 2014 17:49:17 +0100, > Maxime Ripard <maxime.rip...@free-electrons.com> a écrit : > > > Hi, > > > > I'm currently working on 2014.07, on a custom TI AM335x based board. > > > > Everything works great so far, except when we're trying to have USB > > host working. > > > > The board has the MUSB1 controller wired as USB Host only, with the > > following configuration: > > > > #define CONFIG_USB_MUSB_DSPS > > #define CONFIG_ARCH_MISC_INIT > > #define CONFIG_MUSB_PIO_ONLY > > #define CONFIG_MUSB_DISABLE_BULK_COMBINE_SPLIT > > #define CONFIG_MUSB_HOST > > #define CONFIG_MUSB_DSPS > > #define CONFIG_AM335X_USB1 > > #define CONFIG_AM335X_USB1_MODE MUSB_HOST > > > > #ifdef CONFIG_MUSB_HOST > > #define CONFIG_CMD_USB > > #define CONFIG_USB_STORAGE > > #define CONFIG_USB_HOST_ETHER > > #define CONFIG_USB_ETHER_ASIX > > #endif > > > > Whenever we try to scan the USB controller and that a device is > > attached, we get the following output: > > > > U-Boot# usb start > > (Re)start USB... > > USB0: scanning bus 0 for devices... 1 USB Device(s) found > > scanning usb for storage devices... 0 Storage Device(s) found > > scanning usb for ethernet devices... 0 Ethernet Device(s) found > > > > The device itself being a USB key, it's somewhat odd that it > > enumerates the device, but doesn't find the storage device... > > > > The same USB port with the same device works fine under Linux. > > > > The VBUS pin is still up after running the command, so it's not really > > a matter of power being shut down on the bus. > > > > I'm kind of running out of idea on what to test next. The differences > > between u-boot's musb-new and Linux' own musb driver seems thin and to > > make sense, so I don't think the driver itself is to blame. > > > > Anyone experienced such a thing? > > > what is the log you get when you run "usb start" and the USB device is > not plugged ?
I get: U-Boot# usb start (Re)start USB... USB0: lowlevel init failed USB error: all controllers failed lowlevel init Which seems like something worth looking at. Also, when I do it a second time, then it hangs, and finally reboots the board. I don't really know what's going on, but we'll look into this. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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