[PATCH v3 8/9] spi: rockchip: modify DMA max burst to 1
broonie at kernel.org
Thu Sep 3 05:54:29 PDT 2015
On Tue, Sep 01, 2015 at 05:58:44PM +0800, Shawn Lin wrote:
> Generic dma controller on Rockchips' platform cannot support
> DMAFLUSHP instruction which make dma to flush the req of non-aligned
> or non-multiple of what we need. That will cause an unrecoverable
> dma bus error. The saftest way is to set dma max burst to 1.
If this is a quirk of the DMA controller why is it being fixed with a
property specific to the SPI controller? Can't the DMA controller just
override the burst size?
> +#define ROCKCHIP_SPI_BORKEN_BURST_LEN (1<<0) /* broken burst len*/
This is misspelt.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 473 bytes
Desc: Digital signature
More information about the linux-arm-kernel