On 23-08-19, 00:37, Srinivas Kandagatla wrote: > This patch adds bindings for Soundwire Slave devices that includes how > SoundWire enumeration address and Link ID are used to represented in > SoundWire slave device tree nodes. > > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> > --- > .../soundwire/soundwire-controller.yaml | 75 +++++++++++++++++++ > 1 file changed, 75 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml > > diff --git a/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml b/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml > new file mode 100644 > index 000000000000..91aa6c6d6266 > --- /dev/null > +++ b/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml > @@ -0,0 +1,75 @@ > +# SPDX-License-Identifier: GPL-2.0 > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/soundwire/soundwire-controller.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: SoundWire Controller Generic Binding Controller does not make sense here, why not use spec terminology and say "SoundWire Slave Generic Binding" > + > +maintainers: > + - Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> > + > +description: | > + SoundWire busses can be described with a node for the SoundWire controller > + device and a set of child nodes for each SoundWire slave on the bus. > + > +properties: > + $nodename: > + pattern: "^soundwire(@.*|-[0-9a-f])*$" > + > + "#address-cells": > + const: 2 > + > + "#size-cells": > + const: 0 > + > +patternProperties: > + "^.*@[0-9a-f]+$": > + type: object > + > + properties: > + compatible: > + pattern: "^sdw[0-9][0-9a-f]{4}[0-9a-f]{4}[0-9a-f]{2}$" > + description: > + Is the textual representation of SoundWire Enumeration > + address. compatible string should contain SoundWire Version ID, > + Manufacturer ID, Part ID and Class ID in order and shall be in > + lower-case hexadecimal with leading zeroes. > + Valid sizes of these fields are > + Version ID is 1 nibble, number '0x1' represents SoundWire 1.0 > + and '0x2' represents SoundWire 1.1 and so on. > + MFD is 4 nibbles > + PID is 4 nibbles > + CID is 2 nibbles > + More Information on detail of encoding of these fields can be > + found in MIPI Alliance DisCo & SoundWire 1.0 Specifications. > + > + reg: > + maxItems: 1 > + description: > + Instance ID and Link ID of SoundWire Device Address. This looks better :) Thanks. Apart from the minor nit above this looks good to me, I can merge the sdw parts if Rob is fine with them. Thanks > + > + required: > + - compatible > + - reg > + > +examples: > + - | > + soundwire@c2d0000 { > + #address-cells = <2>; > + #size-cells = <0>; > + compatible = "qcom,soundwire-v1.5.0"; > + reg = <0x0c2d0000 0x2000>; > + > + speaker@1 { > + compatible = "sdw10217201000"; > + reg = <1 0>; > + }; > + > + speaker@2 { > + compatible = "sdw10217201000"; > + reg = <2 0>; > + }; > + }; > + > +... > -- > 2.21.0 -- ~Vinod
