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mfd: syscon: Add Atmel SMC binding doc 

The SMC registers are used to configure Atmel EBI (External Bus Interface)
to interface with standard memory devices (NAND, NOR, SRAM or specialized
devices like FPGAs).

Declare this memory region as a syscon, so that different drivers can
configure the SMC interface (mostly timing configuration) according to
their need.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Boris Brezillon 2015-01-14 17:21:56 +01:00 committed by Nicolas Ferre
parent 57d8acbaca
commit ba99112384
1 changed files with 19 additions and 0 deletions
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Documentation/devicetree/bindings/mfd/atmel-smc.txt Normal file
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* Device tree bindings for Atmel SMC (Static Memory Controller)
The SMC registers are used to configure Atmel EBI (External Bus Interface)
to interface with standard memory devices (NAND, NOR, SRAM or specialized
devices like FPGAs).
Required properties:
- compatible: Should be one of the following
"atmel,at91sam9260-smc", "syscon"
"atmel,sama5d3-smc", "syscon"
- reg: Contains offset/length value of the SMC memory
region.
Example:
smc: smc@ffffc000 {
compatible = "atmel,sama5d3-smc", "syscon";
reg = <0xffffc000 0x1000>;
};