linux-kernel - [PATCH v4 1/2] ASoC: dt-bindings: nau8821: Add DMIC slew rate.

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Message-ID: <20231107035230.1241683-2-wtli@nuvoton.com>
Date:   Tue, 7 Nov 2023 11:52:29 +0800
From:   Seven Lee <wtli@...oton.com>
To:     <broonie@...nel.org>
CC:     <lgirdwood@...il.com>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <robh+dt@...nel.org>, <conor+dt@...nel.org>,
        <YHCHuang@...oton.com>, <KCHSU0@...oton.com>, <CTLIN0@...oton.com>,
        <SJLIN0@...oton.com>, <wtli@...oton.com>, <scott6986@...il.com>,
        <supercraig0719@...il.com>, <dardar923@...il.com>
Subject: [PATCH v4 1/2] ASoC: dt-bindings: nau8821: Add DMIC slew rate.

Add input with DMIC slew rate controls.

Signed-off-by: Seven Lee <wtli@...oton.com>
---
 .../devicetree/bindings/sound/nuvoton,nau8821.yaml       | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
index 3e54abd4ca74..3380b6aa9542 100644
--- a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
+++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
@@ -89,6 +89,14 @@ properties:
     $ref: /schemas/types.yaml#/definitions/uint32
     default: 3072000
 
+  nuvoton,dmic-slew-rate:
+    description: The range 0 to 7 represents the speed of DMIC slew rate.
+        The lowest value 0 means the slowest rate and the highest value
+        7 means the fastest rate.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 7
+    default: 0
+
   nuvoton,left-input-single-end:
     description: Enable left input with single-ended settings if set.
         For the headset mic application, the single-ended control is
@@ -127,6 +135,7 @@ examples:
             nuvoton,jack-insert-debounce = <7>;
             nuvoton,jack-eject-debounce = <0>;
             nuvoton,dmic-clk-threshold = <3072000>;
+            nuvoton,dmic-slew-rate= <0>;
             #sound-dai-cells = <0>;
         };
     };
-- 
2.25.1