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From:   Herve Codina <herve.codina@bootlin.com>
To:     Herve Codina <herve.codina@bootlin.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc:     alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [PATCH 1/3] dt-bindings: sound: Add Renesas IDT821034 codec
Date:   Wed, 11 Jan 2023 14:49:03 +0100
Message-Id: <20230111134905.248305-2-herve.codina@bootlin.com>
In-Reply-To: <20230111134905.248305-1-herve.codina@bootlin.com>
References: <20230111134905.248305-1-herve.codina@bootlin.com>
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The Renesas IDT821034 codec is a quad PCM codec with
programmable gain.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../bindings/sound/renesas,idt821034.yaml     | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/renesas,idt821034.yaml

diff --git a/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml b/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml
new file mode 100644
index 000000000000..2c29b770e3f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml
@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/renesas,idt821034.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas IDT821034 codec device
+
+maintainers:
+  - Herve Codina <herve.codina@bootlin.com>
+
+description: |
+  The IDT821034 codec is a four channel PCM codec with onchip filters and
+  programmable gain setting.
+
+  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 ALSA 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 IDT821034 codec also supports 5 gpios (SLIC signals) per channel.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - $ref: /schemas/gpio/gpio.yaml#
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: renesas,idt821034
+
+  reg:
+    description:
+      SPI device address.
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 8192000
+
+  spi-cpha: true
+
+  '#sound-dai-cells':
+    const: 0
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-controller: true
+
+required:
+  - compatible
+  - reg
+  - spi-cpha
+  - '#sound-dai-cells'
+  - gpio-controller
+  - '#gpio-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        codec: idt821034@0 {
+            compatible = "renesas,idt821034";
+            reg = <0>;
+            spi-max-frequency = <8192000>;
+            spi-cpha;
+            #sound-dai-cells = <0>;
+            gpio-controller;
+            #gpio-cells = <2>;
+        };
+    };
+    sound {
+        compatible = "simple-audio-card";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        simple-audio-card,dai-link@0 {
+            reg = <0>;
+            format = "dsp_b";
+            cpu {
+                sound-dai = <&cpu_dai>;
+            };
+            codec {
+                sound-dai = <&codec>;
+                dai-tdm-slot-num = <4>;
+                dai-tdm-slot-width = <8>;
+                /* TS 2, 3, 5, 7 */
+                dai-tdm-slot-tx-mask = <0 0 1 1 0 1 0 1>;
+                dai-tdm-slot-rx-mask = <0 0 1 1 0 1 0 1>;
+            };
+        };
+    };
-- 
2.38.1