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From:   John Watts <contact@jookia.org>
To:     alsa-devel@alsa-project.org
Cc:     Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>, John Watts <contact@jookia.org>,
        patches@opensource.cirrus.com, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] ASoC: wm8782: Use max-rate device tree property
Date:   Fri, 11 Aug 2023 08:49:29 +1000
Message-ID: <20230810224930.3216717-3-contact@jookia.org>
In-Reply-To: <20230810224930.3216717-1-contact@jookia.org>
References: <20230810224930.3216717-1-contact@jookia.org>
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The wm8782 supports rates 96kHz and 192kHz as long as the hardware
is configured properly. Allow this to be specified in the device tree.

Signed-off-by: John Watts <contact@jookia.org>
---
 sound/soc/codecs/wm8782.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c
index 63ab63f3189a..6a2f29ee897c 100644
--- a/sound/soc/codecs/wm8782.c
+++ b/sound/soc/codecs/wm8782.c
@@ -122,6 +122,7 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
 static int wm8782_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
 	struct wm8782_priv *priv;
 	int ret, i;
 
@@ -139,9 +140,12 @@ static int wm8782_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	/* For configurations with FSAMPEN=0 */
+	/* Assume lowest value by default to avoid inadvertent overclocking */
 	priv->max_rate = 48000;
 
+	if (np)
+		of_property_read_u32(np, "max-rate", &priv->max_rate);
+
 	return devm_snd_soc_register_component(&pdev->dev,
 			&soc_component_dev_wm8782, &wm8782_dai, 1);
 }
-- 
2.41.0