Add a helper function that will return a phandle value for the given node. If the node doesn't have a phandle already one will be created.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- common/fdt_support.c | 20 ++++++++++++++++++++ include/fdt_support.h | 1 + 2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/common/fdt_support.c b/common/fdt_support.c index 8f7323d..46aa842 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -1235,6 +1235,26 @@ int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) return ret; }
+/* + * fdt_create_phandle: Create a phandle property for the given node + * + * @fdt: ptr to device tree + * @nodeoffset: node to update + */ +int fdt_create_phandle(void *fdt, int nodeoffset) +{ + /* see if there is a phandle already */ + int phandle = fdt_get_phandle(fdt, nodeoffset); + + /* if we got 0, means no phandle so create one */ + if (phandle == 0) { + phandle = fdt_alloc_phandle(fdt); + fdt_set_phandle(fdt, nodeoffset, phandle); + } + + return phandle; +} + #if defined(CONFIG_VIDEO) int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) { diff --git a/include/fdt_support.h b/include/fdt_support.h index fdb9307..8f06aac 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -90,6 +90,7 @@ int fdt_node_offset_by_compat_reg(void *blob, const char *compat, phys_addr_t compat_off); int fdt_alloc_phandle(void *blob); int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle); +int fdt_create_phandle(void *fdt, int nodeoffset); int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);
int fdt_verify_alias_address(void *fdt, int anode, const char *alias,