From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org, robh+dt@kernel.org, vkoul@kernel.org
Cc: spapothi@codeaurora.org, bgoswami@codeaurora.org,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
lgirdwood@gmail.com, devicetree@vger.kernel.org,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v6 1/4] dt-bindings: soundwire: add slave bindings
Date: Thu, 29 Aug 2019 17:35:11 +0100 [thread overview]
Message-ID: <20190829163514.11221-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20190829163514.11221-1-srinivas.kandagatla@linaro.org>
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@linaro.org>
---
.../soundwire/soundwire-controller.yaml | 82 +++++++++++++++++++
1 file changed, 82 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..1b43993bccdb
--- /dev/null
+++ b/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml
@@ -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>;
+ };
+ };
+
+...
--
2.21.0
next prev parent reply other threads:[~2019-08-29 16:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 16:35 [PATCH v6 0/4] ASoC: codecs: Add WSA881x Smart Speaker amplifier support Srinivas Kandagatla
2019-08-29 16:35 ` Srinivas Kandagatla [this message]
2019-08-29 19:31 ` [PATCH v6 1/4] dt-bindings: soundwire: add slave bindings Rob Herring
2019-09-04 9:17 ` [alsa-devel] " Vinod Koul
2019-08-29 16:35 ` [PATCH v6 2/4] soundwire: core: add device tree support for slave devices Srinivas Kandagatla
2019-09-04 9:18 ` [alsa-devel] " Vinod Koul
2019-08-29 16:35 ` [PATCH v6 3/4] dt-bindings: ASoC: Add WSA881x bindings Srinivas Kandagatla
2019-08-29 19:32 ` Rob Herring
2019-09-19 11:22 ` [alsa-devel] " Srinivas Kandagatla
2019-08-29 16:35 ` [PATCH v6 4/4] ASoC: codecs: add wsa881x amplifier support Srinivas Kandagatla
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