u-boot.git/include/phys2bus.h, branch v2018.03-rc3 Unnamed repository; edit this file 'description' to name the repository. Create API to map between CPU physical and bus addresses 2015-04-14T03:47:59+00:00 Stephen Warren swarren@wwwdotorg.org 2015-03-25T02:07:33+00:00 927c1fa266ead17acb09e9397dbd33578f3ee267 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 operations. 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: Stephen Warren <swarren@wwwdotorg.org> 
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
operations.

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: Stephen Warren <swarren@wwwdotorg.org>