linux-kernel - [PATCH 1/3] dt-bindings: sound: Add the Infineon PEB2466 codec

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Date:   Mon,  6 Feb 2023 15:49:02 +0100
From:   Herve Codina <herve.codina@...tlin.com>
To:     Herve Codina <herve.codina@...tlin.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH 1/3] dt-bindings: sound: Add the Infineon PEB2466 codec

The Infineon PEB2466 codec is a programmable DSP-based four channels
codec with filters capabilities.

Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
 .../bindings/sound/infineon,peb2466.yaml      | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/infineon,peb2466.yaml

diff --git a/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
new file mode 100644
index 000000000000..66993d378aaf
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/infineon,peb2466.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Infineon PEB2466 codec
+
+maintainers:
+  - Herve Codina <herve.codina@...tlin.com>
+
+description: |
+  The Infineon PEB2466 codec is a programmable DSP-based four channels codec
+  with filters capabilities.
+
+  The time-slots used by the codec must be set and so, the properties
+  'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and
+  'dai-tdm-slot-rx-mask' must be present in the sound card node for sub-nodes
+  that involve the codec. The codec uses one 8bit time-slot per channel.
+  'dai-tdm-tdm-slot-with' must be set to 8.
+
+  The PEB2466 codec also supports 28 gpios (signaling pins).
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: infineon,peb2466
+
+  reg:
+    description:
+      SPI device address.
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Master clock
+
+  clock-names:
+    items:
+      - const: mclk
+
+  spi-max-frequency:
+    maximum: 8192000
+
+  reset-gpios:
+    description:
+      GPIO used to reset the device.
+    maxItems: 1
+
+  firmware-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Filters coefficients file to load. If this property is omitted, internal
+      filters are disabled.
+
+  '#sound-dai-cells':
+    const: 0
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-controller: true
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+  - gpio-controller
+  - '#gpio-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        audio-codec@0 {
+            compatible = "infineon,peb2466";
+            reg = <0>;
+            spi-max-frequency = <8192000>;
+            reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
+            #sound-dai-cells = <0>;
+            gpio-controller;
+            #gpio-cells = <2>;
+        };
+    };
-- 
2.39.1