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mtd: add DT bindings for the Intel IXP4xx Flash 

This adds device tree bindings for the Intel IXP4xx
flash controller, a simple physmap which however need a
specific big-endian or mixed-endian access pattern to the
memory.

Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Linus Walleij 2019-10-21 01:00:41 +02:00 committed by Miquel Raynal
parent 5c1719a2b9
commit 8b3cc92622
1 changed files with 22 additions and 0 deletions
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22
Documentation/devicetree/bindings/mtd/intel,ixp4xx-flash.txt Normal file
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Flash device on Intel IXP4xx SoC
This flash is regular CFI compatible (Intel or AMD extended) flash chips with
specific big-endian or mixed-endian memory access pattern.
Required properties:
- compatible : must be "intel,ixp4xx-flash", "cfi-flash";
- reg : memory address for the flash chip
- bank-width : width in bytes of flash interface, should be <2>
For the rest of the properties, see mtd-physmap.txt.
The device tree may optionally contain sub-nodes describing partitions of the
address space. See partition.txt for more detail.
Example:
flash@50000000 {
compatible = "intel,ixp4xx-flash", "cfi-flash";
reg = <0x50000000 0x01000000>;
bank-width = <2>;
};