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Message-Id: <1442607076-26681-2-git-send-email-jcormier@criticallink.com>
Date: Fri, 18 Sep 2015 16:11:10 -0400
From: "Cormier, Jonathan" <jcormier@...ticallink.com>
To: Liam Girdwood <lgirdwood@...il.com>
Cc: Bob Duke <bduke@...ticallink.com>,
Mike Williamson <michael.williamson@...ticallink.com>,
Mark Brown <broonie@...aro.org>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
Peter Ujfalusi <peter.ujfalusi@...com>,
Jyri Sarha <jsarha@...com>,
Misael Lopez Cruz <misael.lopez@...com>,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
Greg Gluszek <greg.gluszek@...ticallink.com>,
"Cormier, Jonathan" <jcormier@...ticallink.com>
Subject: [PATCH RFC 1/7] ASoC: tlv320aic26: Add device tree binding
Signed-off-by: Cormier, Jonathan <jcormier@...ticallink.com>
---
.../devicetree/bindings/sound/tlv320aic26.txt | 65 ++++++++++++++++++++++
sound/soc/codecs/tlv320aic26.c | 10 ++++
2 files changed, 75 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tlv320aic26.txt
diff --git a/Documentation/devicetree/bindings/sound/tlv320aic26.txt b/Documentation/devicetree/bindings/sound/tlv320aic26.txt
new file mode 100644
index 000000000000..93aa0f76ec0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tlv320aic26.txt
@@ -0,0 +1,65 @@
+Texas Instruments - tlv320aic26 Codec module
+
+The tlv320aic26 serial control bus communicates through I2C protocols
+
+Required properties:
+
+- compatible - "string" - One of:
+ "ti,tlv320aic26" - TLV320AIC26
+- reg - <int> - SPI chip select
+
+CODEC input pins:
+ * MICIN
+ * AUX
+
+CODEC output pins:
+ * HPL
+ * HPR
+
+The pins can be used in referring sound node's audio-routing property.
+
+Example:
+
+tlv320aic26: tlv320aic26@0 {
+ compatible = "ti,tlv320aic26";
+ reg = <0>;
+};
+
+&spi0 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&spi0_pins>;
+ pinctrl-1 = <&spi0_sleep_pins>;
+
+ status = "okay";
+ ti,pindir-d0-out-d1-in = <1>;
+
+ tlv320aic26: tlv320aic26@1 {
+ compatible = "ti,tlv320aic26";
+ reg = <0x1>;
+ status = "okay";
+
+ spi-max-frequency = <2000000>;
+ spi-cpha;
+ };
+};
+
+sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "AM335x_SND";
+ simple-audio-card,format = "dsp_b";
+ /* SND_SOC_DAIFMT_CBM_CFM */
+ simple-audio-card,bitclock-master = <&tlv320aic26_codec>;
+ simple-audio-card,frame-master = <&tlv320aic26_codec>;
+ /* SND_SOC_DAIFMT_IB_NF */
+ simple-audio-card,bitclock-inversion;
+
+ simple-audio-card,cpu {
+ sound-dai = <&mcasp1>;
+ system-clock-frequency = <24576000>;
+ };
+
+ tlv320aic26_codec: simple-audio-card,codec {
+ sound-dai = <&tlv320aic26>;
+ system-clock-frequency = <24576000>;
+ };
+};
diff --git a/sound/soc/codecs/tlv320aic26.c b/sound/soc/codecs/tlv320aic26.c
index 620ab9ea1ef0..91fdd96648bd 100644
--- a/sound/soc/codecs/tlv320aic26.c
+++ b/sound/soc/codecs/tlv320aic26.c
@@ -370,10 +370,20 @@ static int aic26_spi_remove(struct spi_device *spi)
return 0;
}
+#if defined(CONFIG_OF)
+static const struct of_device_id tlv320aic26_of_match[] = {
+ { .compatible = "ti,tlv320aic26", },
+ {},
+};
+#endif
+
static struct spi_driver aic26_spi = {
.driver = {
.name = "tlv320aic26-codec",
.owner = THIS_MODULE,
+#if defined(CONFIG_OF)
+ .of_match_table = of_match_ptr(tlv320aic26_of_match),
+#endif
},
.probe = aic26_spi_probe,
.remove = aic26_spi_remove,
--
1.9.1
--
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