From 31fd4cceb63aab1ec27a8d5e1a70a54d7cfdc914 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 21 Oct 2015 13:20:57 +0200 Subject: [PATCH] of_dump: Add option to print node names only Devicetrees tend to become very long and it is hard to find the interesting nodes in a full tree output. This patch adds the -n option to the of_node command. With this option only the names of the nodes are printed, but not the properties. The resulting output is much shorter and the node one is interested in can be copy/pasted to a second call to of_node. Signed-off-by: Sascha Hauer --- commands/of_dump.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/commands/of_dump.c b/commands/of_dump.c index 513a4b88a..b15f54ae0 100644 --- a/commands/of_dump.c +++ b/commands/of_dump.c @@ -31,6 +31,16 @@ #include #include +static void of_print_nodenames(struct device_node *node) +{ + struct device_node *n; + + printf("%s\n", node->full_name); + + list_for_each_entry(n, &node->children, parent_list) + of_print_nodenames(n); +} + static int do_of_dump(int argc, char *argv[]) { int opt; @@ -40,8 +50,9 @@ static int do_of_dump(int argc, char *argv[]) char *dtbfile = NULL; size_t size; const char *nodename; + int names_only = 0; - while ((opt = getopt(argc, argv, "Ff:")) > 0) { + while ((opt = getopt(argc, argv, "Ff:n")) > 0) { switch (opt) { case 'f': dtbfile = optarg; @@ -49,6 +60,9 @@ static int do_of_dump(int argc, char *argv[]) case 'F': fix = 1; break; + case 'n': + names_only = 1; + break; default: return COMMAND_ERROR_USAGE; } @@ -111,7 +125,10 @@ static int do_of_dump(int argc, char *argv[]) goto out; } - of_print_nodes(node, 0); + if (names_only) + of_print_nodenames(node); + else + of_print_nodes(node, 0); out: if (of_free)