summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/misc/lwn-bk4.txt
blob: d6a8c188c0874433c9130be60c3dd90fbf06e730 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
* Liebherr's BK4 controller external SPI

A device which handles data acquisition from compatible industrial
peripherals.
The SPI is used for data and management purposes in both master and
slave modes.

Required properties:

- compatible : Should be "lwn,bk4"

Required SPI properties:

- reg : Should be address of the device chip select within
  the controller.

- spi-max-frequency : Maximum SPI clocking speed of device in Hz, should be
  30MHz at most for the Liebherr's BK4 external bus.

Example:

spidev0: spi@0 {
	compatible = "lwn,bk4";
	spi-max-frequency = <30000000>;
	reg = <0>;
};