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authorBrian Norris <computersforpeace@gmail.com>2015-12-04 01:47:32 +0300
committerBrian Norris <computersforpeace@gmail.com>2015-12-09 04:10:20 +0300
commite488ca9f8d4f62c2dc36bfa5c32f68e7f05ab381 (patch)
tree1679a478caabfbad8c177678afb4358d1130caad /drivers/mtd
parent8c62b4e118cfa7a3c906c01d4ba2c78a5bd97531 (diff)
downloadlinux-e488ca9f8d4f62c2dc36bfa5c32f68e7f05ab381.tar.xz
doc: dt: mtd: partitions: add compatible property to "partitions" node
As noted here [1], there are potentially future conflicts if we try to use MTD's "partitions" subnode to describe anything besides just the fixed-in-the-device-tree partitions currently described in this document. Particularly, there was a proposal to use this node for the AFS parser too. It can pose a (small) problem to try to differentiate the following nodes: // using binding as currently specified partitions { #address-cells = <x>; #size-cells = <y>; partition@0 { ...; }; }; and // proposed future binding partitions { compatible = "arm,arm-flash-structure"; }; It's especially difficult if other uses of this node start having subnodes. So, since the "partitions" node is new in v4.4, let's fixup the binding before release so that it requires a compatible property, so it's much clearer to distinguish. e.g.: // proposed partitions { compatible = "fixed-partitions"; #address-cells = <x>; #size-cells = <y>; partition@0 { ...; }; }; [1] Subject: "mtd: create a partition type device tree binding" http://lkml.kernel.org/g/20151113220039.GA74382@google.com http://lists.infradead.org/pipermail/linux-mtd/2015-November/063355.html http://lists.infradead.org/pipermail/linux-mtd/2015-November/063364.html Cc: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/ofpart.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index 3e9c5857c991..9ed6038e47d2 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -55,6 +55,9 @@ static int parse_ofpart_partitions(struct mtd_info *master,
master->name, mtd_node->full_name);
ofpart_node = mtd_node;
dedicated = false;
+ } else if (!of_device_is_compatible(ofpart_node, "fixed-partitions")) {
+ /* The 'partitions' subnode might be used by another parser */
+ return 0;
}
/* First count the subnodes */