linux-kernel - [PATCH v2 2/5] ASoC: dt-bindings: Add tas2781 amplifier

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Message-Id: <20230508054512.719-1-13916275206@139.com>
Date:   Mon,  8 May 2023 13:45:12 +0800
From:   Shenghao Ding <13916275206@....com>
To:     broonie@...nel.org, devicetree@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
        lgirdwood@...il.com, perex@...ex.cz,
        pierre-louis.bossart@...ux.intel.com
Cc:     kevin-lu@...com, shenghao-ding@...com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, x1077012@...com, peeyush@...com,
        navada@...com, gentuser@...il.com, Ryan_Chu@...tron.com,
        Sam_Wu@...tron.com, Shenghao Ding <13916275206@....com>
Subject: [PATCH v2 2/5] ASoC: dt-bindings: Add tas2781 amplifier

Create tas2781.yaml for tas2781 driver.

Signed-off-by: Shenghao Ding <13916275206@....com>

---
Changes in v7:
 - Submit together with tas2781 codec driver code
 - Add more detail description for ti,audio-slots
 - Keep consistent for "I2C"
 - remove reset-gpios description
 - For reg, express as constraints instead
 - remove unnecessary '|'
 Changes to be committed:
	new file:   Documentation/devicetree/bindings/sound/ti,tas2781.yaml
---
 .../devicetree/bindings/sound/ti,tas2781.yaml | 90 +++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/ti,tas2781.yaml

diff --git a/Documentation/devicetree/bindings/sound/ti,tas2781.yaml b/Documentation/devicetree/bindings/sound/ti,tas2781.yaml
new file mode 100644
index 000000000000..96c2584855d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ti,tas2781.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 - 2023 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/ti,tas2781.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TAS2781 SmartAMP
+
+maintainers:
+  - Shenghao Ding <shenghao-ding@...com>
+
+description:
+  The TAS2781 is a mono, digital input Class-D audio amplifier
+  optimized for efficiently driving high peak power into small
+  loudspeakers. Integrated an on-chip DSP supports Texas Instruments
+  Smart Amp speaker protection algorithm. The integrated speaker
+  voltage and current sense provides for real time
+  monitoring of loudspeaker behavior.
+
+properties:
+  compatible:
+    enum:
+      - ti,tas2781
+
+  reg:
+    description: I2C address of the primary device.
+    items:
+      minimum: 0x38
+      maximum: 0x3f
+
+  reset-gpios:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  ti,audio-slots:
+    description:
+      Multiple tas2781s aggregate as one Audio Amp to support
+      multiple audio slots
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 4
+    items:
+      minimum: 0x38
+      maximum: 0x3f
+      description:
+        I2C address of the device for different audio slots,
+        useless in mono case.
+
+  ti,broadcast-addr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Generic I2C address for all the tas2781 devices in
+      purpose of I2C broadcast during the multi-device
+      writes, useless in mono case.
+
+  '#sound-dai-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+   #include <dt-bindings/gpio/gpio.h>
+   i2c {
+     /* example with quad support, such as tablet or pad device */
+     #address-cells = <1>;
+     #size-cells = <0>;
+     quad: codec@38 {
+       compatible = "ti,tas2781";
+       reg = <0x38>;
+       #sound-dai-cells = <1>;
+       reset-gpios = < &gpio1 10 GPIO_ACTIVE_HIGH >;
+       interrupt-parent = <&gpio1>;
+       interrupts = <15>;
+       ti,audio-slots = < 0x38 /* Audio slot 0 */
+                          0x3a /* Audio slot 1 */
+                          0x39 /* Audio slot 2 */
+                          0x3b /* Audio slot 3 */
+                        >;
+       /* Generic I2C addr among all the tas2781 for i2c data broadcast */
+       ti,broadcast-addr = <0x40>;
+     };
+   };
+...
-- 
2.34.1