linux-kernel - [PATCH v1 1/2] dt-bindings: sound: add Microsemi ZL38060 binding

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Message-Id: <20200416001414.25746-1-TheSven73@gmail.com>
Date:   Wed, 15 Apr 2020 20:14:13 -0400
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Rob Herring <robh+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: sound: add Microsemi ZL38060 binding

Add devicetree binding for the Microsemi ZL38060 Connected
Home Audio Processor.

Signed-off-by: Sven Van Asbroeck <TheSven73@...il.com>
---

Tree: v5.7-rc1

 .../devicetree/bindings/sound/zl38060.yaml    | 90 +++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/zl38060.yaml

diff --git a/Documentation/devicetree/bindings/sound/zl38060.yaml b/Documentation/devicetree/bindings/sound/zl38060.yaml
new file mode 100644
index 000000000000..8e1976bee76b
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/zl38060.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/zl38060.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ZL38060 Connected Home Audio Processor from Microsemi.
+
+description: |
+  The ZL38060 is a "Connected Home Audio Processor" from Microsemi,
+  which consists of a Digital Signal Processor (DSP), several Digital
+  Audio Interfaces (DAIs), analog outputs, and a block of 14 GPIOs.
+
+maintainers:
+  - Jaroslav Kysela <perex@...ex.cz>
+  - Takashi Iwai <tiwai@...e.com>
+
+properties:
+  compatible:
+    const: mscc,zl38060
+
+  reg:
+    description:
+      SPI device address.
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 24000000
+
+  reset-gpios:
+    description:
+      A GPIO line handling reset of the chip. As the line is active low,
+      it should be marked GPIO_ACTIVE_LOW (see ../gpio/gpio.txt)
+    maxItems: 1
+
+  mscc,load-firmware:
+    description:
+      If present, the driver will attempt to load firmware into the chip via
+      the SPI interface.
+    type: boolean
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-controller: true
+
+  '#sound-dai-cells':
+    const: 0
+
+  amp-en-gpios:
+    description:
+      An optional GPIO line which is active when the codec is playing back
+      audio. Can be used to control an external amplifier.
+    maxItems: 1
+
+  mscc,amp-startup-delay-ms:
+    description:
+      An optional delay between amp-en-gpio becoming active, and the start
+      of audio playback. In milliseconds.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - reg
+  - '#gpio-cells'
+  - gpio-controller
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        codec: zl38060@0 {
+            gpio-controller;
+            #gpio-cells = <2>;
+            #sound-dai-cells = <0>;
+            compatible = "mscc,zl38060";
+            reg = <0>;
+            spi-max-frequency = <12000000>;
+            reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
+            amp-en-gpios = <&codec 3 GPIO_ACTIVE_HIGH>;
+            mscc,amp-startup-delay-ms = <12>;
+            mscc,load-firmware;
+        };
+    };
-- 
2.17.1