linux-kernel - [PATCH v4 3/3] ASoC: dt-bindings: wlf,wm8782: Add wlf,fsampen property

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Message-ID: <20230918131532.2257615-4-contact@jookia.org>
Date:   Mon, 18 Sep 2023 23:15:32 +1000
From:   John Watts <contact@...kia.org>
To:     alsa-devel@...a-project.org
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        John Watts <contact@...kia.org>, patches@...nsource.cirrus.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/3] ASoC: dt-bindings: wlf,wm8782: Add wlf,fsampen property

The WM8782 can safely support rates higher than 48kHz by changing the
value of the FSAMPEN pin.

Allow specifying the FSAMPEN pin value in the device tree.

Signed-off-by: John Watts <contact@...kia.org>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
 Documentation/devicetree/bindings/sound/wm8782.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/wm8782.txt b/Documentation/devicetree/bindings/sound/wm8782.txt
index 256cdec6ec4d..1a28f3280972 100644
--- a/Documentation/devicetree/bindings/sound/wm8782.txt
+++ b/Documentation/devicetree/bindings/sound/wm8782.txt
@@ -8,10 +8,17 @@ Required properties:
  - Vdda-supply : phandle to a regulator for the analog power supply (2.7V - 5.5V)
  - Vdd-supply  : phandle to a regulator for the digital power supply (2.7V - 3.6V)
 
+Optional properties:
+
+ - wlf,fsampen:
+   FSAMPEN pin value, 0 for low, 1 for high, 2 for disconnected.
+   Defaults to 0 if left unspecified.
+
 Example:
 
 wm8782: stereo-adc {
 	compatible = "wlf,wm8782";
 	Vdda-supply = <&vdda_supply>;
 	Vdd-supply = <&vdd_supply>;
+	wlf,fsampen = <2>; /* 192KHz */
 };
-- 
2.42.0