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Commit c5a88dd9 authored by Stefan Roese's avatar Stefan Roese Committed by Grant Likely
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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: default avatarStefan Roese <sr@denx.de>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent efcc2da3

Documentation/powerpc/dts-bindings/mtd-physmap.txt

+18 −1
Original line number Diff line number Diff line
@@ -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>;

		};

	};