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author | Lukasz Majewski <lukma@denx.de> | 2018-09-28 01:26:55 +0300 |
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committer | Rob Herring <robh@kernel.org> | 2018-10-15 21:46:39 +0300 |
commit | 8d452721628db190964ab44e302c3e3fb3bdb8ef (patch) | |
tree | d23d751a17281b5e96a4a0fcf2570895088b5540 /Documentation/devicetree/bindings | |
parent | 40970f7a43d6bddb5e47baf16449d6f5fd329531 (diff) | |
download | linux-8d452721628db190964ab44e302c3e3fb3bdb8ef.tar.xz |
dt-bindings: misc: bk4: Add device tree binding for Liebherr's BK4 SPI bus
Add Device Tree binding document for Liebherr's BK4 external SPI bus.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r-- | Documentation/devicetree/bindings/misc/lwn-bk4.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/misc/lwn-bk4.txt b/Documentation/devicetree/bindings/misc/lwn-bk4.txt new file mode 100644 index 000000000000..d6a8c188c087 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/lwn-bk4.txt @@ -0,0 +1,26 @@ +* 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>; +}; |