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authorStefan Roese <sr@denx.de>2009-04-16 23:11:54 +0200
committerGrant Likely <grant.likely@secretlab.ca>2009-04-16 23:11:54 +0200
commitc5a88dd90cf243a17c4a8c10e1ed973192ea5825 (patch)
treea49dfac872411bdd4824dfe92180f80fa8b95c57
parentpowerpc/of-device-tree: Factor MTD physmap bindings out of booting-without-of (diff)
downloadlinux-c5a88dd90cf243a17c4a8c10e1ed973192ea5825.tar.xz
linux-c5a88dd90cf243a17c4a8c10e1ed973192ea5825.zip
powerpc/device-tree: Document MTD nodes with multiple "reg" tuples
Add binding for mtd nodes with multiple reg tuples. Multiple reg tuples are used when the flash region covers multiple devices of the same type, but not necessarily the same size. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
-rw-r--r--Documentation/powerpc/dts-bindings/mtd-physmap.txt19
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/powerpc/dts-bindings/mtd-physmap.txt b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
index cd474f9aef39..667c9bde8699 100644
--- a/Documentation/powerpc/dts-bindings/mtd-physmap.txt
+++ b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
@@ -5,7 +5,9 @@ file systems on embedded devices.
- compatible : should contain the specific model of flash chip(s)
used, if known, followed by either "cfi-flash" or "jedec-flash"
- - reg : Address range of the flash chip
+ - reg : Address range(s) of the flash chip(s)
+ It's possible to (optionally) define multiple "reg" tuples so that
+ non-identical NOR chips can be described in one flash node.
- bank-width : Width (in bytes) of the flash bank. Equal to the
device width times the number of interleaved chips.
- device-width : (optional) Width of a single flash chip. If
@@ -61,3 +63,18 @@ Example:
read-only;
};
};
+
+Here an example with multiple "reg" tuples:
+
+ flash@f0000000,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "intel,PC48F4400P0VB", "cfi-flash";
+ reg = <0 0x00000000 0x02000000
+ 0 0x02000000 0x02000000>;
+ bank-width = <2>;
+ partition@0 {
+ label = "test-part1";
+ reg = <0 0x04000000>;
+ };
+ };