1. 14 Apr, 2015 1 commit
    • Stephen Warren's avatar
      Create API to map between CPU physical and bus addresses · 927c1fa2
      Stephen Warren authored
      On some SoCs, DMA-capable peripherals see a different address space to
      the CPU's physical address space. Create an API to allow platform-agnostic
      drivers to convert between the two address spaces when programming DMA
      This API will exist on all platforms, but will have a dummy implementation
      when this feature is not required. Other platforms will enable
      CONFIG_PHYS_TO_BUS and provide the required implementation.
      Signed-off-by: 's avatarStephen Warren <swarren@wwwdotorg.org>