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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-22 10:52:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-22 10:52:23 -0700
commit8d7ead5c69dfa928322777c532fa0770af319202 (patch)
treef8cec2042575db9e89409cbfc253aa2ec1c8293a /Documentation
parente0703556644a531e50b5dc61b9f6ea83af5f6604 (diff)
parentdfcff3f8a5f18a0cfa233522b5647c2e6035fcb5 (diff)
Merge tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul: "This includes DT support thanks to Srini and more work done by Intel (Pierre) on improving cadence and intel support. Summary: - Add DT bindings and DT support in core - Add debugfs support for soundwire properties - Improvements on streaming handling to core - Improved handling of Cadence module - More updates and improvements to Intel driver" * tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (30 commits) soundwire: stream: make stream name a const pointer soundwire: Add compute_params callback soundwire: core: add device tree support for slave devices dt-bindings: soundwire: add slave bindings soundwire: bus: set initial value to port_status soundwire: intel: handle disabled links soundwire: intel: add debugfs register dump soundwire: cadence_master: add debugfs register dump soundwire: add debugfs support soundwire: intel: remove unused variables soundwire: intel: move shutdown() callback and don't export symbol soundwire: cadence_master: add kernel parameter to override interrupt mask soundwire: intel_init: add kernel module parameter to filter out links soundwire: cadence_master: fix divider setting in clock register soundwire: cadence_master: make use of mclk_freq property soundwire: intel: read mclk_freq property from firmware soundwire: add new mclk_freq field for properties soundwire: stream: remove unnecessary variable initializations soundwire: stream: fix disable sequence soundwire: include mod_devicetable.h to avoid compiling warnings ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml82
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diff --git a/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml b/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml
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@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%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
+
+maintainers:
+ - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+ - Vinod Koul <vkoul@kernel.org>
+
+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:
+ $nodename:
+ pattern: "^soundwire(@.*)?$"
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "^.*@[0-9a-f],[0-9a-f]$":
+ type: object
+
+ properties:
+ compatible:
+ pattern: "^sdw[0-9a-f]{1}[0-9a-f]{4}[0-9a-f]{4}[0-9a-f]{2}$"
+ 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:
+ Link ID followed by Instance ID of SoundWire Device Address.
+
+ required:
+ - compatible
+ - reg
+
+required:
+ - "#address-cells"
+ - "#size-cells"
+
+examples:
+ - |
+ soundwire@c2d0000 {
+ #address-cells = <2>;
+ #size-cells = <0>;
+ reg = <0x0c2d0000 0x2000>;
+
+ speaker@0,1 {
+ compatible = "sdw10217201000";
+ reg = <0 1>;
+ powerdown-gpios = <&wcdpinctrl 2 0>;
+ #thermal-sensor-cells = <0>;
+ };
+
+ speaker@0,2 {
+ compatible = "sdw10217201000";
+ reg = <0 2>;
+ powerdown-gpios = <&wcdpinctrl 2 0>;
+ #thermal-sensor-cells = <0>;
+ };
+ };
+
+...