dt-bindings: i2c: Add Altera I2C Controller

Add the documentation to support the Altera synthesizable
logic I2C Controller in FPGA.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Thor Thayer 2017-09-11 16:17:19 -05:00 committed by Wolfram Sang
parent 46c1e79fee
commit 8f73681616
1 changed files with 39 additions and 0 deletions

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* Altera I2C Controller
* This is Altera's synthesizable logic block I2C Controller for use
* in Altera's FPGAs.
Required properties :
- compatible : should be "altr,softip-i2c-v1.0"
- reg : Offset and length of the register set for the device
- interrupts : <IRQ> where IRQ is the interrupt number.
- clocks : phandle to input clock.
- #address-cells = <1>;
- #size-cells = <0>;
Recommended properties :
- clock-frequency : desired I2C bus clock frequency in Hz.
Optional properties :
- fifo-size : Size of the RX and TX FIFOs in bytes.
- Child nodes conforming to i2c bus binding
Example :
i2c@100080000 {
compatible = "altr,softip-i2c-v1.0";
reg = <0x00000001 0x00080000 0x00000040>;
interrupt-parent = <&intc>;
interrupts = <0 43 4>;
clocks = <&clk_0>;
clock-frequency = <100000>;
#address-cells = <1>;
#size-cells = <0>;
fifo-size = <4>;
eeprom@51 {
compatible = "atmel,24c32";
reg = <0x51>;
pagesize = <32>;
};
};