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i2c: atmel: DT binding for i2c driver 

DT binding documentation for atmel i2c driver.

Signed-off-by: Songjun Wu <songjun.wu@atmel.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
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Songjun Wu 2016-06-20 13:22:39 +08:00 committed by Andreas Bießmann
parent 8800e0fa20
commit e3b7599be7
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doc/device-tree-bindings/i2c/i2c-at91.txt Normal file
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I2C for Atmel platforms
Required properties :
- compatible : Must be "atmel,at91rm9200-i2c", "atmel,at91sam9261-i2c",
"atmel,at91sam9260-i2c", "atmel,at91sam9g20-i2c", "atmel,at91sam9g10-i2c",
"atmel,at91sam9x5-i2c", "atmel,sama5d4-i2c" or "atmel,sama5d2-i2c".
- reg: physical base address of the controller and length of memory mapped
region.
- #address-cells = <1>;
- #size-cells = <0>;
- clocks: phandles to input clocks.
Optional properties:
- clock-frequency: Desired I2C bus frequency in Hz, default value is 100000.
- Child nodes conforming to i2c bus binding.
Examples :
i2c0: i2c@f8028000 {
compatible = "atmel,sama5d2-i2c";
reg = <0xf8028000 0x100>;
#address-cells = <1>;
#size-cells = <0>;
clocks = <&twi0_clk>;
clock-frequency = <100000>;
};