ASoC: fsl-asoc-card: Add optional dt property for setting mclk-id

Merge series from Ariel D'Alessandro <ariel.dalessandro@collabora.com>:

Sound cards may allow using different main clock inputs. In the generic
fsl-asoc-card driver, these values are hardcoded for each specific card
configuration.  Let's make it more flexible, allowing setting mclk-id
from the device-tree node.

Documentation/devicetree/bindings/sound/fsl-asoc-card.txt

@@ -82,6 +82,7 @@ Optional properties:
   - dai-format		: audio format, for details see simple-card.yaml.
   - frame-inversion	: dai-link uses frame clock inversion, for details see simple-card.yaml.
   - bitclock-inversion	: dai-link uses bit clock inversion, for details see simple-card.yaml.
+  - mclk-id		: main clock id, specific for each card configuration.
 
 Optional unless SSI is selected as a CPU DAI:
 

Documentation/devicetree/bindings/sound/tlv320aic31xx.txt

@@ -58,7 +58,7 @@ The pins can be used in referring sound node's audio-routing property.
 
 Example:
 #include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
+#include <dt-bindings/sound/tlv320aic31xx.h>
 
 tlv320aic31xx: tlv320aic31xx@18 {
 	compatible = "ti,tlv320aic311x";

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -11,7 +11,7 @@
 #include <dt-bindings/pinctrl/am43xx.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pwm/pwm.h>
-#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
+#include <dt-bindings/sound/tlv320aic31xx.h>
 
 / {
 	model = "TI AM43x EPOS EVM";

include/dt-bindings/sound/tlv320aic31xx-micbias.h → include/dt-bindings/sound/tlv320aic31xx.h

 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __DT_TLV320AIC31XX_MICBIAS_H
-#define __DT_TLV320AIC31XX_MICBIAS_H
+#ifndef __DT_TLV320AIC31XX_H
+#define __DT_TLV320AIC31XX_H
 
 #define MICBIAS_2_0V		1
 #define MICBIAS_2_5V		2
 #define MICBIAS_AVDDV		3
 
-#endif /* __DT_TLV320AIC31XX_MICBIAS_H */
+#define PLL_CLKIN_MCLK		0x00
+#define PLL_CLKIN_BCLK		0x01
+#define PLL_CLKIN_GPIO1		0x02
+#define PLL_CLKIN_DIN		0x03
+
+#endif /* __DT_TLV320AIC31XX_H */

sound/soc/codecs/tlv320aic31xx.c

@@ -32,7 +32,7 @@
 #include <sound/soc.h>
 #include <sound/initval.h>
 #include <sound/tlv.h>
-#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
+#include <dt-bindings/sound/tlv320aic31xx.h>
 
 #include "tlv320aic31xx.h"
 

sound/soc/fsl/fsl-asoc-card.c

@@ -637,7 +637,6 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		priv->dai_link[2].dpcm_capture = 0;
 		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
 		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
-		priv->codec_priv.mclk_id = AIC31XX_PLL_CLKIN_BCLK;
 		priv->card.dapm_routes = audio_map_tx;
 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
@@ -693,6 +692,12 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		goto asrc_fail;
 	}
 
+	/*
+	 * Allow setting mclk-id from the device-tree node. Otherwise, the
+	 * default value for each card configuration is used.
+	 */
+	of_property_read_u32(np, "mclk-id", &priv->codec_priv.mclk_id);
+
 	/* Format info from DT is optional. */
 	snd_soc_daifmt_parse_clock_provider_as_phandle(np, NULL, &bitclkprovider, &frameprovider);
 	if (bitclkprovider || frameprovider) {