[PATCH 11/13] ARM: ixp4xx: Drop custom DMA coherency and bouncing

[Christoph Hellwig]

On Thu, Jan 27, 2022 at 11:00:54AM +0100, Arnd Bergmann wrote:
> Maybe we could change the sa1111-ohci driver to use usb_hcd_setup_local_mem(),
> which implements a similar method locally, and then kill off dmabounce for good.
> 
> usb_hcd_setup_local_mem() is used on some pxa machines (csb726 with ohci-sm501
> and eseries/tosa with ohci-tmio), though they use it to DMA into a
> small SRAM (8KB
> for tmio, 256KB for sm501) rather than a limited section of DRAM.

That would be awesome.