Hi Fabio, > From: Fabio Estevam <festevam@xxxxxxx> > > Add a lwn,bk4-spi.yaml binding for Liebherr's BK4 external SPI > controller. > > Currently, the compatible string used for this device is "lwn,bk4", > which is the same as the board compatible string documented at > fsl.yaml. > > This causes several dt-schema warnings: > > make dtbs_check DT_SCHEMA_FILES=fsl.yaml > ... > > ['lwn,bk4'] is too short > 'lwn,bk4' is not one of ['tq,imx8dxp-tqma8xdp-mba8xx'] > 'lwn,bk4' is not one of ['tq,imx8qxp-tqma8xqp-mba8xx'] > 'lwn,bk4' is not one of ['armadeus,imx1-apf9328', 'fsl,imx1ads'] > ... > > Use a more specific "lwn,bk4-spi" compatible string for this > device. > Thanks for updating this. BK4 is another example of to be long-time supported device... :-) > Signed-off-by: Fabio Estevam <festevam@xxxxxxx> > --- > .../devicetree/bindings/misc/lwn,bk4-spi.yaml | 54 > +++++++++++++++++++ .../devicetree/bindings/misc/lwn-bk4.txt | > 26 --------- 2 files changed, 54 insertions(+), 26 deletions(-) > create mode 100644 > Documentation/devicetree/bindings/misc/lwn,bk4-spi.yaml delete mode > 100644 Documentation/devicetree/bindings/misc/lwn-bk4.txt > > diff --git a/Documentation/devicetree/bindings/misc/lwn,bk4-spi.yaml > b/Documentation/devicetree/bindings/misc/lwn,bk4-spi.yaml new file > mode 100644 index 000000000000..7fb86e6abade > --- /dev/null > +++ b/Documentation/devicetree/bindings/misc/lwn,bk4-spi.yaml > @@ -0,0 +1,54 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/misc/lwn,bk4-spi.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Liebherr's BK4 external SPI controller > + > +maintainers: > + - Lukasz Majewski <lukma@xxxxxxx> > + > +description: | > + Liebherr's BK4 external SPI controller is 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. > + > +allOf: > + - $ref: /schemas/spi/spi-peripheral-props.yaml# > + > +properties: > + compatible: > + const: lwn,bk4-spi > + > + reg: > + maxItems: 1 > + > + spi-max-frequency: > + maximum: 30000000 > + > + fsl,spi-cs-sck-delay: true > + > + fsl,spi-sck-cs-delay: true > + > +required: > + - compatible > + - spi-max-frequency > + > +additionalProperties: false > + > +examples: > + - | > + spi { > + #address-cells = <1>; > + #size-cells = <0>; > + > + spidev@0 { > + compatible = "lwn,bk4-spi"; > + reg = <0>; > + spi-max-frequency = <30000000>; > + fsl,spi-cs-sck-delay = <200>; > + fsl,spi-sck-cs-delay = <400>; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/misc/lwn-bk4.txt > b/Documentation/devicetree/bindings/misc/lwn-bk4.txt deleted file > mode 100644 index d6a8c188c087..000000000000 > --- a/Documentation/devicetree/bindings/misc/lwn-bk4.txt > +++ /dev/null > @@ -1,26 +0,0 @@ > -* 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>; > -}; Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Erika Unter HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@xxxxxxx
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