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| author | Thor Thayer <thor.thayer@linux.intel.com> | 2017-09-11 16:17:19 -0500 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2017-09-13 23:37:16 +0200 |
| commit | 8f73681616a447fa08bf3538f56420657decf7b9 (patch) | |
| tree | d4338368ea79612dff42a846f181a5b57454fb73 /Documentation/devicetree | |
| parent | 46c1e79fee417f151547aa46fae04ab06cb666f4 (diff) | |
| download | linux-8f73681616a447fa08bf3538f56420657decf7b9.tar.bz2 | |
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>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-altera.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-altera.txt b/Documentation/devicetree/bindings/i2c/i2c-altera.txt new file mode 100644 index 000000000000..767664f448ec --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-altera.txt @@ -0,0 +1,39 @@ +* 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>; + }; + }; + |