Messages in this thread | | | Subject | Re: musb: am3358: having problem with high-speed on usb1 at peripheral | From | ayaka <> | Date | Tue, 16 Aug 2016 22:05:00 +0800 |
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On 08/16/2016 04:31 PM, Felipe Balbi wrote: > Hi, > > Ayaka <ayaka@soulik.info> writes: >>> ayaka <ayaka@soulik.info> writes: >>>>> On 08/13/2016 01:44 AM, Greg KH wrote: >>>>>> On Sat, Aug 13, 2016 at 12:38:46AM +0800, ayaka wrote: >>>>>> >>>>>>> On 08/12/2016 03:40 PM, Greg KH wrote: >>>>>>>> On Fri, Aug 12, 2016 at 10:23:15AM +0800, ayaka wrote: >>>>>>>> Hello all: >>>>>>>> I recently add a support for customize am3358 board using the branch >>>>>>>> processor-sdk-linux-03.00.00 from Ti git. But I meet a problem with musb >>>>>>>> at the peripheral mode. >>>>>>> Then you are going to have to get support from TI for this, nothing we >>>>>>> can do here about random vendor kernel trees, sorry. >>>>>>> >>>>>>> If you can use the 4.7 tree, or better yet, the 4.8-rc tree, then we >>>>>> I have tried the 4.8-rc1, I meet the same problem. >>>>> What problem is that exactly? >>>> Sorry, the USB1 can't work at high speed gadget mode and have DMA problem. >>>> musb-hdrc musb-hdrc.0.auto: Failed to request rx1. >>>> musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517 >>> -517 is EPROBE_DEFER. Most likely DMA hasn't probed and MUSB is >>> deferring to try later. This does _NOT_ MUSB can't work with >>> DMA. Perhaps you didn't enable support for MUSB's DMA engine. >>> >> I have set the status of cppi41dma to okay in dts. And CONFIG_USB_TI_CPPI41_DMA, >> CONFIG_TI_CPPI41 and CONFIG_TI_EDMA are enabled with build into kernel. >> >> Anything else I should do? > no, that should do it. Since musb returned -EPROBE_DEFER, it will retry > probing later. Check if musb probed fine. The easiest way is to check if > you have anything in /sys/class/udc/ Yes, it has musb-hdrc.0.auto. But it doesn't mean that it fallback PIO mode? Actually I don't care whether it use PIO or DMA, I just can't bear it work in USB 2.0 Full Speed mode, too slow. >
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