diff options
Diffstat (limited to 'include/dm/ofnode.h')
| -rw-r--r-- | include/dm/ofnode.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index 5318d65035..2c0597c407 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -999,6 +999,22 @@ u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr); u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr); /** + * ofnode_get_dma_range() - get dma-ranges for a specific DT node + * + * Get DMA ranges for a specifc node, this is useful to perform bus->cpu and + * cpu->bus address translations + * + * @param blob Pointer to device tree blob + * @param node_offset Node DT offset + * @param cpu Pointer to variable storing the range's cpu address + * @param bus Pointer to variable storing the range's bus address + * @param size Pointer to variable storing the range's size + * @return translated DMA address or OF_BAD_ADDR on error + */ +int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, + u64 *size); + +/** * ofnode_device_is_compatible() - check if the node is compatible with compat * * This allows to check whether the node is comaptible with the compat. |