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Diffstat (limited to 'sound/soc/codecs/sgtl5000.c')
-rw-r--r--sound/soc/codecs/sgtl5000.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index add18d6d77da..a6a4748c97f9 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -116,6 +116,13 @@ enum {
I2S_LRCLK_STRENGTH_HIGH,
};
+enum {
+ I2S_SCLK_STRENGTH_DISABLE,
+ I2S_SCLK_STRENGTH_LOW,
+ I2S_SCLK_STRENGTH_MEDIUM,
+ I2S_SCLK_STRENGTH_HIGH,
+};
+
/* sgtl5000 private structure in codec */
struct sgtl5000_priv {
int sysclk; /* sysclk rate */
@@ -129,6 +136,7 @@ struct sgtl5000_priv {
u8 micbias_resistor;
u8 micbias_voltage;
u8 lrclk_strength;
+ u8 sclk_strength;
};
/*
@@ -1302,7 +1310,9 @@ static int sgtl5000_probe(struct snd_soc_component *component)
SGTL5000_DAC_MUTE_RIGHT |
SGTL5000_DAC_MUTE_LEFT);
- reg = ((sgtl5000->lrclk_strength) << SGTL5000_PAD_I2S_LRCLK_SHIFT | 0x5f);
+ reg = ((sgtl5000->lrclk_strength) << SGTL5000_PAD_I2S_LRCLK_SHIFT |
+ (sgtl5000->sclk_strength) << SGTL5000_PAD_I2S_SCLK_SHIFT |
+ 0x1f);
snd_soc_component_write(component, SGTL5000_CHIP_PAD_STRENGTH, reg);
snd_soc_component_write(component, SGTL5000_CHIP_ANA_CTRL,
@@ -1542,6 +1552,13 @@ static int sgtl5000_i2c_probe(struct i2c_client *client,
sgtl5000->lrclk_strength = value;
}
+ sgtl5000->sclk_strength = I2S_SCLK_STRENGTH_LOW;
+ if (!of_property_read_u32(np, "sclk-strength", &value)) {
+ if (value > I2S_SCLK_STRENGTH_HIGH)
+ value = I2S_SCLK_STRENGTH_LOW;
+ sgtl5000->sclk_strength = value;
+ }
+
/* Ensure sgtl5000 will start with sane register values */
sgtl5000_fill_defaults(client);