1 * Liebherr's BK4 controller external SPI
2
3 A device which handles data acquisition from compatible industrial
4 peripherals.
5 The SPI is used for data and management purposes in both master and
6 slave modes.
7
8 Required properties:
9
10 - compatible : Should be "lwn,bk4"
11
12 Required SPI properties:
13
14 - reg : Should be address of the device chip select within
15 the controller.
16
17 - spi-max-frequency : Maximum SPI clocking speed of device in Hz, should be
18 30MHz at most for the Liebherr's BK4 external bus.
19
20 Example:
21
22 spidev0: spi@0 {
23 compatible = "lwn,bk4";
24 spi-max-frequency = <30000000>;
25 reg = <0>;
26 };
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