ASoC: samsung: odroidx2: Handle I2S CDCLK clock conditionally

In order to support old DTs we check the codec device node if it
contains "clocks" property and only if it doesn't (which indicates
an old DT) we proceed with enabling the CDCLK clock by means of
the set_sysclk() callback.  For new DTs which use the common clock
bindings for CDCLK that clock is supposed to be handled outside
the sound machine driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/samsung/odroidx2_max98090.c b/sound/soc/samsung/odroidx2_max98090.c
index fa4f1d2f69bfa0905deea745b7260488694b5a55..596f1180a3698627844a0e8746e8d64bf0441f47 100644 (file)
--- a/sound/soc/samsung/odroidx2_max98090.c
+++ b/sound/soc/samsung/odroidx2_max98090.c
@@ -21,6 +21,8 @@ struct odroidx2_drv_data {
 /* The I2S CDCLK output clock frequency for the MAX98090 codec */
 #define MAX98090_MCLK 19200000
 
+static struct snd_soc_dai_link odroidx2_dai[];
+
 static int odroidx2_late_probe(struct snd_soc_card *card)
 {
        struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
@@ -29,7 +31,9 @@ static int odroidx2_late_probe(struct snd_soc_card *card)
 
        ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
                                                SND_SOC_CLOCK_IN);
-       if (ret < 0)
+
+       if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
+                                       "clocks", NULL))
                return ret;
 
        /* Set the cpu DAI configuration in order to use CDCLK */