From 8535ab125853d1ba9067ba408c532c2ad79146e6 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 17 May 2012 14:11:52 +0200 Subject: [PATCH] dt: add helper for phandle references Phandles are the fancy device tree name for "pointer to another node". To create a phandle property, we most likely want to reference to the node we're pointing to by its path. So create a helper that allows us to do so. Signed-off-by: Alexander Graf Reviewed-by: Peter Crosthwaite --- device_tree.c | 8 ++++++++ device_tree.h | 3 +++ 2 files changed, 11 insertions(+) diff --git a/device_tree.c b/device_tree.c index 94a239e987..2905f9afe4 100644 --- a/device_tree.c +++ b/device_tree.c @@ -132,6 +132,14 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path, return r; } +int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, + const char *property, + const char *target_node_path) +{ + uint32_t phandle = fdt_get_phandle(fdt, findnode_nofail(fdt, target_node_path)); + return qemu_devtree_setprop_cell(fdt, node_path, property, phandle); +} + int qemu_devtree_nop_node(void *fdt, const char *node_path) { int r; diff --git a/device_tree.h b/device_tree.h index 1e671e2506..754bd2b2ec 100644 --- a/device_tree.h +++ b/device_tree.h @@ -22,6 +22,9 @@ int qemu_devtree_setprop_cell(void *fdt, const char *node_path, const char *property, uint32_t val); int qemu_devtree_setprop_string(void *fdt, const char *node_path, const char *property, const char *string); +int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, + const char *property, + const char *target_node_path); int qemu_devtree_nop_node(void *fdt, const char *node_path); int qemu_devtree_add_subnode(void *fdt, const char *name);