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| author | Joachim Eastwood <manabian@gmail.com> | 2015-08-16 20:10:16 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-08-24 14:05:18 +0200 |
| commit | 3f9c37a0c9a59db97ca5712eca7838b842949047 (patch) | |
| tree | d2930d6523d198e60ae1598db62f82595f4cad17 /Documentation | |
| parent | i2c: mux: Add register-based mux i2c-mux-reg (diff) | |
| download | linux-3f9c37a0c9a59db97ca5712eca7838b842949047.tar.xz linux-3f9c37a0c9a59db97ca5712eca7838b842949047.zip | |
i2c: lpc2k: add driver
Add support for the I2C controller found on several NXP devices
including LPC2xxx, LPC178x/7x and LPC18xx/43xx. The controller
is implemented as a state machine and the driver act upon the
state changes when the bus is accessed.
The I2C controller supports master/slave operation, bus
arbitration, programmable clock rate, and speeds up to 1 Mbit/s.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt b/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt new file mode 100644 index 000000000000..4101aa621ad4 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt @@ -0,0 +1,33 @@ +NXP I2C controller for LPC2xxx/178x/18xx/43xx + +Required properties: + - compatible: must be "nxp,lpc1788-i2c" + - reg: physical address and length of the device registers + - interrupts: a single interrupt specifier + - clocks: clock for the device + - #address-cells: should be <1> + - #size-cells: should be <0> + +Optional properties: +- clock-frequency: the desired I2C bus clock frequency in Hz; in + absence of this property the default value is used (100 kHz). + +Example: +i2c0: i2c@400a1000 { + compatible = "nxp,lpc1788-i2c"; + reg = <0x400a1000 0x1000>; + interrupts = <18>; + clocks = <&ccu1 CLK_APB1_I2C0>; + #address-cells = <1>; + #size-cells = <0>; +}; + +&i2c0 { + clock-frequency = <400000>; + + lm75@48 { + compatible = "nxp,lm75"; + reg = <0x48>; + }; +}; + |