From c5a88dd90cf243a17c4a8c10e1ed973192ea5825 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 16 Apr 2009 15:11:54 -0600 Subject: 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 Signed-off-by: Grant Likely --- Documentation/powerpc/dts-bindings/mtd-physmap.txt | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/powerpc/dts-bindings/mtd-physmap.txt b/Documentation/powerpc/dts-bindings/mtd-physmap.txt index cd474f9..667c9bd 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>; + }; + }; -- cgit v1.1