On Sat, Dec 27, 2014 at 4:52 PM, Chris Morgan <[email protected]> wrote: > That's kind of disappointing to hear. Pio sounds like it means a lot of > overhead if you are using a lot of usb bandwidth. I'm interested as we are > using a bit of usb and a usb audio codec... > > Is this issue something exclusive to the ti kernel or also in mainline?
It's just the last few outlier bugs for the DMA controller behind the musb ip block.. In v3.8.x we have PIO mode set by default too: CONFIG_USB_MUSB_DSPS=y CONFIG_MUSB_PIO_ONLY=y https://github.com/beagleboard/linux/blob/1b8cd64cf49960d835591de1fee2282494858fa6/arch/arm/configs/bb.org_defconfig#L3345 So it's not really a regression from a v3.8.x -> v3.14.x upgrade point. But if we start getting a fair number of user problems, i'm prepared to push it back to pio mode quickly. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
