[PATCH v3 1/7] ASoC: dt-bindings: wcd938x: add bindings for wcd938x

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org
Cc: robh@kernel.org, devicetree@vger.kernel.org, lgirdwood@gmail.com,
	perex@perex.cz, linux-kernel@vger.kernel.org,
	alsa-devel@alsa-project.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v3 1/7] ASoC: dt-bindings: wcd938x: add bindings for wcd938x
Date: Fri, 19 Mar 2021 09:29:13 +0000	[thread overview]
Message-ID: <20210319092919.21218-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20210319092919.21218-1-srinivas.kandagatla@linaro.org>

Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC
connected over SoundWire. This device has two SoundWire device RX and
TX respectively, supporting 4 x ADCs, ClassH, Ear, Aux PA, 2xHPH,
7 x TX diff inputs, 8 DMICs, MBHC.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 .../bindings/sound/qcom,wcd938x.yaml          | 165 ++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml

diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml
new file mode 100644
index 000000000000..fe47e483d4b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml
@@ -0,0 +1,165 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,wcd938x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for Qualcomm WCD9380/WCD9385 Audio Codec
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC.
+  It has RX and TX Soundwire slave devices.
+
+properties:
+  compatible:
+    const: sdw20217010d00
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    description: GPIO spec for reset line to use
+    maxItems: 1
+
+  direction:
+    oneOf:
+      - const: rx
+      - const: tx
+
+  vdd-buck-supply:
+    description: A reference to the 1.8V buck supply
+
+  vdd-rxtx-supply:
+    description: A reference to the 1.8V rx supply
+
+  vdd-io-supply:
+    description: A reference to the 1.8V I/O supply
+
+  qcom,micbias1-microvolt:
+    description: micbias1 voltage
+    minimum: 1800000
+    maximum: 2850000
+
+  qcom,micbias2-microvolt:
+    description: micbias2 voltage
+    minimum: 1800000
+    maximum: 2850000
+
+  qcom,micbias3-microvolt:
+    description: micbias3 voltage
+    minimum: 1800000
+    maximum: 2850000
+
+  qcom,micbias4-microvolt:
+    description: micbias4 voltage
+    minimum: 1800000
+    maximum: 2850000
+
+  qcom,mbhc-hphl-switch:
+    description: Indicates that HPHL switch type is normally closed
+    type: boolean
+
+  qcom,mbhc-ground-switch:
+    description: Indicates that Headset Ground switch type is normally closed
+    type: boolean
+
+  qcom,mbhc-button0-vthreshold-microvolt:
+    description: Voltage threshold value headset button0
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button1-vthreshold-microvolt:
+    description: Voltage threshold value headset button1
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button2-vthreshold-microvolt:
+    description: Voltage threshold value headset button2
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button3-vthreshold-microvolt:
+    description: Voltage threshold value headset button3
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button4-vthreshold-microvolt:
+    description: Voltage threshold value headset button4
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button5-vthreshold-microvolt:
+    description: Voltage threshold value headset button5
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button6-vthreshold-microvolt:
+    description: Voltage threshold value headset button6
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button7-vthreshold-microvolt:
+    description: Voltage threshold value headset button7
+    minimum: 0
+    maximum: 500000
+
+  qcom,port-mapping:
+    description: |
+      Specifies static port mapping between slave and master ports.
+      In the order of slave port index.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 4
+    maxItems: 5
+
+  '#sound-dai-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - qcom,micbias1-microvolt
+  - qcom,micbias2-microvolt
+  - qcom,micbias3-microvolt
+  - qcom,micbias4-microvolt
+  - qcom,port-mapping
+  - qcom,mbhc-hphl-switch
+  - qcom,mbhc-ground-switch
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    soundwire@3230000 {
+        #address-cells = <2>;
+        #size-cells = <0>;
+        reg = <0x03230000 0x2000>;
+
+        codec@0,3 {
+            compatible = "sdw20217010d00";
+            reg  = <0 3>;
+            reset-gpios = <&tlmm 32 0>;
+            direction = "tx";
+            #sound-dai-cells = <1>;
+            qcom,micbias1-microvolt = <1800000>;
+            qcom,micbias2-microvolt = <1800000>;
+            qcom,micbias3-microvolt = <1800000>;
+            qcom,micbias4-microvolt = <1800000>;
+            qcom,mbhc-hphl-switch;
+            qcom,mbhc-ground-switch;
+            qcom,mbhc-button0-vthreshold-microvolt = <75000>;
+            qcom,mbhc-button1-vthreshold-microvolt = <150000>;
+            qcom,mbhc-button2-vthreshold-microvolt = <237000>;
+            qcom,mbhc-button3-vthreshold-microvolt = <500000>;
+            qcom,mbhc-button5-vthreshold-microvolt = <500000>;
+            qcom,mbhc-button6-vthreshold-microvolt = <500000>;
+            qcom,mbhc-button7-vthreshold-microvolt = <500000>;
+            qcom,port-mapping = <2 3 4 5>;
+        };
+    };
+
+...
-- 
2.21.0

