On 17 March 2016 at 10:39, Arnd Bergmann <arnd@xxxxxxxx> wrote: > While fixing another bug, I noticed that bcma manually sets up > a dma_mask pointer for its child devices. We have a generic > helper for that now, which should be able to cope better with > any variations that might be needed to deal with cache coherency, > unusual DMA address offsets, iommus, or limited DMA masks, none > of which are currently handled here. > > This changes the core to use the of_dma_configure(), like > we do for platform devices that are probed directly from > DT. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> I applied this patch and tested on BCM47081 based device. I still got bgmac working which surely uses DMA. There is only 1 ARM wireless SoC using bcma (BCM47198) but its WiFi core isn't supported by b43. Any tips what else to test? SPI core/driver doesn't use DMA. Maybe NAND core does, but we don't use it. -- Rafał
