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

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Message-Id: <20210311173416.25219-2-srinivas.kandagatla@linaro.org>
Date:   Thu, 11 Mar 2021 17:34:10 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     perex@...ex.cz, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, lgirdwood@...il.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 1/7] ASoC: dt-bindings: wcd938x: add bindings for wcd938x

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@...aro.org>
---
 .../bindings/sound/qcom,wcd938x.yaml          | 127 ++++++++++++++++++
 1 file changed, 127 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..81c8957145d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml
@@ -0,0 +1,127 @@
+# 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@...aro.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 Gound switch type is normally closed!
+    type: boolean
+
+  qcom,mbhc-vthreshold:
+    description: |
+      Voltage threshold values for all the headset buttons
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 8
+    maxItems: 8
+
+  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
+  - qcom,mbhc-vthreshold
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    soundwire@...0000 {
+        #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-vthreshold = <75 150 237 500 500 500 500 500>;
+            qcom,port-mapping = <2 3 4 5>;
+        };
+    };
+
+...
-- 
2.21.0