| Message ID | 20181102103539.6077-2-marek.behun@nic.cz |
|---|---|
| State | New |
| Headers | show |
| Series | [v2,bus+gpio,1/4] bus: Add support for Moxtet bus | expand |
On Fri, Nov 02, 2018 at 11:35:37AM +0100, Marek Behún wrote: > This adds device tree binding documentation for the Moxtet bus, a bus > via which the different modules connected to the Turris Mox router can > be configured. > > Signed-off-by: Marek Behún <marek.behun@nic.cz> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: devicetree@vger.kernel.org > --- > .../devicetree/bindings/bus/moxtet.txt | 34 +++++++++++++++++++ > 1 file changed, 34 insertions(+) > create mode 100644 Documentation/devicetree/bindings/bus/moxtet.txt > > diff --git a/Documentation/devicetree/bindings/bus/moxtet.txt b/Documentation/devicetree/bindings/bus/moxtet.txt > new file mode 100644 > index 000000000000..19a1bab61e8a > --- /dev/null > +++ b/Documentation/devicetree/bindings/bus/moxtet.txt > @@ -0,0 +1,34 @@ > +Turris Mox module configuration bus (over SPI) > + > +Required properties: > + - compatible : Should be "cznic,moxtet". > + - #address-cells : Has to be 1 > + - #size-cells : Has to be 0 > +For other required and optional properties of SPI slave nodes please refer to > +../spi/spi-bus.txt. You need to list what's required. spi-cpol and spi-cpha are typically required or not. > + > +Required properties of subnodes: > + - reg : Should be position on the Moxtet bus > + > +The driver finds the devices connected to the bus by itself, but it may be > +needed to reference some of them from other parts of the device tree. In that > +case the devices can be defined as subnodes of the moxtet node. > + > +Example: > + > + moxtet@1 { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "cznic,moxtet"; > + reg = <1>; > + spi-max-frequency = <10000000>; > + spi-cpol; > + spi-cpha; > + > + moxtet_sfp: moxtet-sfp@0 { gpio@0 > + compatible = "cznic,moxtet-sfp"; > + gpio-controller; > + #gpio-cells = <2>; > + reg = <0>; > + } > + }; > -- > 2.18.1 >
diff --git a/Documentation/devicetree/bindings/bus/moxtet.txt b/Documentation/devicetree/bindings/bus/moxtet.txt new file mode 100644 index 000000000000..19a1bab61e8a --- /dev/null +++ b/Documentation/devicetree/bindings/bus/moxtet.txt @@ -0,0 +1,34 @@ +Turris Mox module configuration bus (over SPI) + +Required properties: + - compatible : Should be "cznic,moxtet". + - #address-cells : Has to be 1 + - #size-cells : Has to be 0 +For other required and optional properties of SPI slave nodes please refer to +../spi/spi-bus.txt. + +Required properties of subnodes: + - reg : Should be position on the Moxtet bus + +The driver finds the devices connected to the bus by itself, but it may be +needed to reference some of them from other parts of the device tree. In that +case the devices can be defined as subnodes of the moxtet node. + +Example: + + moxtet@1 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "cznic,moxtet"; + reg = <1>; + spi-max-frequency = <10000000>; + spi-cpol; + spi-cpha; + + moxtet_sfp: moxtet-sfp@0 { + compatible = "cznic,moxtet-sfp"; + gpio-controller; + #gpio-cells = <2>; + reg = <0>; + } + };
This adds device tree binding documentation for the Moxtet bus, a bus via which the different modules connected to the Turris Mox router can be configured. Signed-off-by: Marek Behún <marek.behun@nic.cz> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org --- .../devicetree/bindings/bus/moxtet.txt | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/moxtet.txt