[U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned
Thomas Chou
thomas at wytron.com.tw
Wed Oct 14 03:48:21 CEST 2015
Hi Marek,
>>> On 10/12/2015 06:32 PM, Marek Vasut wrote:
>>>> Wouldn't invalidate_dcache_range() be enough here ? You don't care
>>>> about
>>>> the data in the newly allocated area at this point I guess -- either
>>>> you
>>>> fill them in and then flush, for DMA from CPU to device OR you receive
>>>> data from device to CPU and then you invalidate this buffer again.
Thanks a lot for your suggestion. I added invalidate_dcache_range()
which will check if the initda instruction is supported by the nios2 cpu.
Best regards,
Thomas
More information about the U-Boot
mailing list