1* Device tree bindings for Atmel Flexcom (Flexible Serial Communication Unit)
2
3The Atmel Flexcom is just a wrapper which embeds a SPI controller, an I2C
4controller and an USART. Only one function can be used at a time and is chosen
5at boot time according to the device tree.
6
7Required properties:
8- compatible:		Should be "atmel,sama5d2-flexcom"
9- reg:			Should be the offset/length value for Flexcom dedicated
10			I/O registers (without USART, TWI or SPI registers).
11- clocks:		Should be the Flexcom peripheral clock from PMC.
12- #address-cells:	Should be <1>
13- #size-cells:		Should be <1>
14- ranges:		Should be one range for the full I/O register region
15			(including USART, TWI and SPI registers).
16- atmel,flexcom-mode:	Should be one of the following values:
17			- <1> for USART
18			- <2> for SPI
19			- <3> for I2C
20
21Required child:
22A single available child device of type matching the "atmel,flexcom-mode"
23property.
24
25The phandle provided by the clocks property of the child is the same as one for
26the Flexcom parent.
27
28For other properties, please refer to the documentations of the respective
29device:
30- ../serial/atmel-usart.txt
31- ../spi/spi_atmel.txt
32- ../i2c/i2c-at91.txt
33
34Example:
35
36flexcom@f8034000 {
37	compatible = "atmel,sama5d2-flexcom";
38	reg = <0xf8034000 0x200>;
39	clocks = <&flx0_clk>;
40	#address-cells = <1>;
41	#size-cells = <1>;
42	ranges = <0x0 0xf8034000 0x800>;
43	atmel,flexcom-mode = <2>;
44
45	spi@400 {
46		compatible = "atmel,at91rm9200-spi";
47		reg = <0x400 0x200>;
48		interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>;
49		pinctrl-names = "default";
50		pinctrl-0 = <&pinctrl_flx0_default>;
51		#address-cells = <1>;
52		#size-cells = <0>;
53		clocks = <&flx0_clk>;
54		clock-names = "spi_clk";
55		atmel,fifo-size = <32>;
56
57		flash@0 {
58			compatible = "atmel,at25f512b";
59			reg = <0>;
60			spi-max-frequency = <20000000>;
61		};
62	};
63};
64