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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2014-03-25 14:48:46 +0400
committerWolfram Sang <wsa@the-dreams.de>2014-03-27 21:53:16 +0400
commit1b5b23718b8460b1627d3aeb4aa8ab04170e53f7 (patch)
tree632efdeae91f453961148bdae1444bdc8d1025bc /Documentation/devicetree/bindings/i2c/i2c-efm32.txt
parent0ff83d2cad1ad584bd5df639750f90bd6b09055c (diff)
downloadlinux-1b5b23718b8460b1627d3aeb4aa8ab04170e53f7.tar.xz
i2c: efm32: new bus driver
This was tested on a EFM32GG-DK3750 devboard that has a temperature sensor and an eeprom on its i2c bus. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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+* Energymicro efm32 i2c controller
+
+Required properties :
+
+ - reg : Offset and length of the register set for the device
+ - compatible : should be "efm32,i2c"
+ - interrupts : the interrupt number
+ - clocks : reference to the module clock
+
+Recommended properties :
+
+ - clock-frequency : maximal I2C bus clock frequency in Hz.
+ - efm32,location : Decides the location of the USART I/O pins.
+ Allowed range : [0 .. 6]
+
+Example:
+ i2c0: i2c@4000a000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "efm32,i2c";
+ reg = <0x4000a000 0x400>;
+ interrupts = <9>;
+ clocks = <&cmu clk_HFPERCLKI2C0>;
+ clock-frequency = <100000>;
+ status = "disabled";
+ efm32,location = <3>;
+
+ eeprom@50 {
+ compatible = "microchip,24c02";
+ reg = <0x50>;
+ pagesize = <16>;
+ };
+ };
+