Hi, I'm currently trying to get the USB Host working on the SH7760. I tried the platform driver to start with and get the following error on boot: [ 3.600000] usb 1-1: new full-speed USB device number 2 using ohci-platform [ 3.872000] ohci-platform ohci-platform: frame counter not updating; disabled [ 3.872000] ohci-platform ohci-platform: HC died; cleaning up So I dug a bit further and see that the SH7760 driver in the 2.6 kernel makes use of the 8KB shared memory for HCCA and ED/TD buffers. After looking through the code for the 4.1 Kernel I am currently trying to port to I think I need to write my own platform driver that calls dma_declare_coherent_memory so that the OHCI driver uses this 8KB shared memory. Then set HCD_LOCAL_MEM in the hc_driver flags to ensure that it uses dma_alloc_coherent. In other words copy what the ohci-sm501.c file is doing. I just wanted to confirm that this is what I should be doing or is there a better generic way of telling the OHCI driver to use this 8KB shared memory. Thanks in advance, Martin. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
