Hi Shawn, > On Fri, Sep 28, 2018 at 12:26:55AM +0200, Lukasz Majewski wrote: > > Add Device Tree binding document for Liebherr's BK4 external SPI > > bus. > > > > Signed-off-by: Lukasz Majewski <lukma@xxxxxxx> > > There should really be a patch series consisting of this one and > spidev change [1]. > > Since spidev has already been picked up, having a series including > this and dts change would be the second option. With DT folks' ACK, > I can send bindings change together with DTS using it. Any option will work for me :-). > > Shawn > > [1] https://lkml.org/lkml/2018/9/28/48 > > > --- > > Documentation/devicetree/bindings/misc/lwn-bk4.txt | 26 > > ++++++++++++++++++++++ 1 file changed, 26 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/misc/lwn-bk4.txt > > > > 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>; > > +}; > > -- > > 2.11.0 > > Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@xxxxxxx
Attachment:
pgpaRCqAs5cY3.pgp
Description: OpenPGP digital signature
