| Message ID | 1496447559-19782-4-git-send-email-thor.thayer@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jun 02, 2017 at 06:52:38PM -0500, thor.thayer@linux.intel.com wrote: > From: Thor Thayer <thor.thayer@linux.intel.com> > > Add the documentation to support the Altera synthesizable > logic I2C Controller in FPGA. > > Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com> > --- > v2 Change the subject to identify dt-bindings > Add synthesizable logic to description. > Change compatible string to "altr,softip-i2c" > Make description of clock phandle singular since 1 clock. > Remove altr, from fifo-size > Specify fifo-size is in bytes. > v3 Add version to compatible string "altr,softip-i2c-v1.0" > Add for use in FPGA in description. > --- > .../devicetree/bindings/i2c/i2c-altera.txt | 39 ++++++++++++++++++++++ > 1 file changed, 39 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/i2c-altera.txt Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/i2c/i2c-altera.txt b/Documentation/devicetree/bindings/i2c/i2c-altera.txt new file mode 100644 index 0000000..767664f --- /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>; + }; + }; +