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[86.30.250.44]) by smtp.gmail.com with ESMTPSA id p7sm3923492wmh.38.2019.08.29.07.44.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Aug 2019 07:45:00 -0700 (PDT) From: Srinivas Kandagatla To: broonie@kernel.org, robh+dt@kernel.org, vkoul@kernel.org Date: Thu, 29 Aug 2019 15:44:39 +0100 Message-Id: <20190829144442.6210-2-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190829144442.6210-1-srinivas.kandagatla@linaro.org> References: <20190829144442.6210-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, bgoswami@codeaurora.org, spapothi@codeaurora.org, lgirdwood@gmail.com, linux-kernel@vger.kernel.org, Srinivas Kandagatla Subject: [alsa-devel] [PATCH v5 1/4] dt-bindings: soundwire: add slave bindings X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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 --- .../soundwire/soundwire-controller.yaml | 72 +++++++++++++++++++ 1 file changed, 72 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..449b6130ce63 --- /dev/null +++ b/Documentation/devicetree/bindings/soundwire/soundwire-controller.yaml @@ -0,0 +1,72 @@ +# 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 + +maintainers: + - Srinivas Kandagatla + - Vinod Koul + +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. + + additionalProperties: false + +examples: + - | + soundwire@c2d0000 { + #address-cells = <2>; + #size-cells = <0>; + reg = <0x0c2d0000 0x2000>; + + speaker@0,1 { + compatible = "sdw10217201000"; + reg = <0 1>; + }; + + speaker@0,2 { + compatible = "sdw10217201000"; + reg = <0 2>; + }; + }; + +...