Re: [PATCH 11/13] ARM: ixp4xx: Drop custom DMA coherency and bouncing
flat view
From: Christoph Hellwig <hch@infradead.org>
Date: 2022-01-31 06:56:13
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. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel