diff options
Diffstat (limited to 'common/fdt_support.c')
| -rw-r--r-- | common/fdt_support.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c index 96b5d0aa4e..5d8eb12f10 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -966,10 +966,29 @@ static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } /** * struct of_bus - Callbacks for bus specific translators + * @name: A string used to identify this bus in debug output. + * @addresses: The name of the DT property from which addresses are + * to be read, typically "reg". * @match: Return non-zero if the node whose parent is at * parentoffset in the FDT blob corresponds to a bus * of this type, otherwise return zero. If NULL a match * is assumed. + * @count_cells:Count how many cells (be32 values) a node whose parent + * is at parentoffset in the FDT blob will require to + * represent its address (written to *addrc) & size + * (written to *sizec). + * @map: Map the address addr from the address space of this + * bus to that of its parent, making use of the ranges + * read from DT to an array at range. na and ns are the + * number of cells (be32 values) used to hold and address + * or size, respectively, for this bus. pna is the number + * of cells used to hold an address for the parent bus. + * Returns the address in the address space of the parent + * bus. + * @translate: Update the value of the address cells at addr within an + * FDT by adding offset to it. na specifies the number of + * cells used to hold the address being translated. Returns + * zero on success, non-zero on error. * * Each bus type will include a struct of_bus in the of_busses array, * providing implementations of some or all of the functions used to |