[deliverable/linux.git] / Documentation / devicetree / bindings / mtd / arm-versatile.txt

Flash device on ARM Versatile board

These flash chips are found in the ARM reference designs like Integrator,
Versatile, RealView, Versatile Express etc.

They are regular CFI compatible (Intel or AMD extended) flash chips with
some special write protect/VPP bits that can be controlled by the machine's
system controller.

Required properties:
- compatible : must be "arm,versatile-flash", "cfi-flash";
- reg : memory address for the flash chip
- bank-width : width in bytes of flash interface.

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@34000000 {
	compatible = "arm,versatile-flash", "cfi-flash";
	reg = <0x34000000 0x4000000>;
	bank-width = <4>;
};
Commit	Line	Data
3ba7222a GL	1	Flash device on ARM Versatile board
3ba7222a GL	2
81fc3eb2 LW	3	These flash chips are found in the ARM reference designs like Integrator,
	4	Versatile, RealView, Versatile Express etc.
	5
	6	They are regular CFI compatible (Intel or AMD extended) flash chips with
	7	some special write protect/VPP bits that can be controlled by the machine's
	8	system controller.
	9
3ba7222a	10	Required properties:
81fc3eb2 LW	11	- compatible : must be "arm,versatile-flash", "cfi-flash";
81fc3eb2 LW	12	- reg : memory address for the flash chip
3ba7222a GL	13	- bank-width : width in bytes of flash interface.
3ba7222a GL	14
81fc3eb2 LW	15	For the rest of the properties, see mtd-physmap.txt.
81fc3eb2 LW	16
83619ea0 JL	17	The device tree may optionally contain sub-nodes describing partitions of the
83619ea0 JL	18	address space. See partition.txt for more detail.
81fc3eb2 LW	19
	20	Example:
	21
	22	flash@34000000 {
	23	compatible = "arm,versatile-flash", "cfi-flash";
	24	reg = <0x34000000 0x4000000>;
	25	bank-width = <4>;
	26	};