On Jul 18, 2005, at 5:57 AM, jaypee@xxxxxxxxxx wrote:
Thanks Bruno but I can't find that config option to select.
It is no longer an option in 2.6. All Au1xxx processors force CONFIG_DMA_NONCOHERENT because some cases still don't work correctly.
Changing from CONFIG_DMA_NONCOHERENT to CONFIG_DMA_COHERENT make no difference,
It won't, because the Ethernet driver knows the hardware works correctly for this peripheral and assumes coherent IO. Any Ethernet performance differences among Au1xxx designs are likely to be related to processor speed, the memory interface configuration, or PHY issues (improperly configured or high error rates). Thanks. -- Dan
