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authorAdam Thomson <Adam.Thomson.Opensource@diasemi.com>2016-05-10 16:11:07 +0100
committerMark Brown <broonie@kernel.org>2016-05-10 19:24:19 +0100
commit1e62c52ddc2d23a02ac2308cc1bb6ff18f0cf3cd (patch)
tree74d9d84cf583304b4bae43adaefe009f6da0633a
parent7e28fd469624fc41ec326a31abbc63a7afdd10f5 (diff)
downloadlinux-1e62c52ddc2d23a02ac2308cc1bb6ff18f0cf3cd.tar.bz2
ASoC: da7213: Update PLL ranges to improve locking at frequency boundary
This update changes the dividers used for ranges of input MCLK frequencies, to improve PLL locking for a corner case when at edge of MCLK frequency input divider range. Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/codecs/da7213.c26
-rw-r--r--sound/soc/codecs/da7213.h28
2 files changed, 27 insertions, 27 deletions
diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c
index 657b7eba9954..a233fe7f12eb 100644
--- a/sound/soc/codecs/da7213.c
+++ b/sound/soc/codecs/da7213.c
@@ -1344,26 +1344,26 @@ static int da7213_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
/* Workout input divider based on MCLK rate */
if ((da7213->mclk_rate == 32768) && (source == DA7213_SYSCLK_PLL)) {
/* 32KHz PLL Mode */
- indiv_bits = DA7213_PLL_INDIV_10_20_MHZ;
- indiv = DA7213_PLL_INDIV_10_20_MHZ_VAL;
+ indiv_bits = DA7213_PLL_INDIV_9_TO_18_MHZ;
+ indiv = DA7213_PLL_INDIV_9_TO_18_MHZ_VAL;
freq_ref = 3750000;
pll_ctrl |= DA7213_PLL_32K_MODE;
} else {
/* 5 - 54MHz MCLK */
if (da7213->mclk_rate < 5000000) {
goto pll_err;
- } else if (da7213->mclk_rate <= 10000000) {
- indiv_bits = DA7213_PLL_INDIV_5_10_MHZ;
- indiv = DA7213_PLL_INDIV_5_10_MHZ_VAL;
- } else if (da7213->mclk_rate <= 20000000) {
- indiv_bits = DA7213_PLL_INDIV_10_20_MHZ;
- indiv = DA7213_PLL_INDIV_10_20_MHZ_VAL;
- } else if (da7213->mclk_rate <= 40000000) {
- indiv_bits = DA7213_PLL_INDIV_20_40_MHZ;
- indiv = DA7213_PLL_INDIV_20_40_MHZ_VAL;
+ } else if (da7213->mclk_rate <= 9000000) {
+ indiv_bits = DA7213_PLL_INDIV_5_TO_9_MHZ;
+ indiv = DA7213_PLL_INDIV_5_TO_9_MHZ_VAL;
+ } else if (da7213->mclk_rate <= 18000000) {
+ indiv_bits = DA7213_PLL_INDIV_9_TO_18_MHZ;
+ indiv = DA7213_PLL_INDIV_9_TO_18_MHZ_VAL;
+ } else if (da7213->mclk_rate <= 36000000) {
+ indiv_bits = DA7213_PLL_INDIV_18_TO_36_MHZ;
+ indiv = DA7213_PLL_INDIV_18_TO_36_MHZ_VAL;
} else if (da7213->mclk_rate <= 54000000) {
- indiv_bits = DA7213_PLL_INDIV_40_54_MHZ;
- indiv = DA7213_PLL_INDIV_40_54_MHZ_VAL;
+ indiv_bits = DA7213_PLL_INDIV_36_TO_54_MHZ;
+ indiv = DA7213_PLL_INDIV_36_TO_54_MHZ_VAL;
} else {
goto pll_err;
}
diff --git a/sound/soc/codecs/da7213.h b/sound/soc/codecs/da7213.h
index 26b87e3c3088..fbb7a356a501 100644
--- a/sound/soc/codecs/da7213.h
+++ b/sound/soc/codecs/da7213.h
@@ -163,10 +163,10 @@
#define DA7213_VMID_EN (0x1 << 7)
/* DA7213_PLL_CTRL = 0x27 */
-#define DA7213_PLL_INDIV_5_10_MHZ (0x0 << 2)
-#define DA7213_PLL_INDIV_10_20_MHZ (0x1 << 2)
-#define DA7213_PLL_INDIV_20_40_MHZ (0x2 << 2)
-#define DA7213_PLL_INDIV_40_54_MHZ (0x3 << 2)
+#define DA7213_PLL_INDIV_5_TO_9_MHZ (0x0 << 2)
+#define DA7213_PLL_INDIV_9_TO_18_MHZ (0x1 << 2)
+#define DA7213_PLL_INDIV_18_TO_36_MHZ (0x2 << 2)
+#define DA7213_PLL_INDIV_36_TO_54_MHZ (0x3 << 2)
#define DA7213_PLL_INDIV_MASK (0x3 << 2)
#define DA7213_PLL_MCLK_SQR_EN (0x1 << 4)
#define DA7213_PLL_32K_MODE (0x1 << 5)
@@ -499,16 +499,16 @@
#define DA7213_ALC_AVG_ITERATIONS 5
/* PLL related */
-#define DA7213_SYSCLK_MCLK 0
-#define DA7213_SYSCLK_PLL 1
-#define DA7213_PLL_FREQ_OUT_90316800 90316800
-#define DA7213_PLL_FREQ_OUT_98304000 98304000
-#define DA7213_PLL_FREQ_OUT_94310400 94310400
-#define DA7213_PLL_INDIV_5_10_MHZ_VAL 2
-#define DA7213_PLL_INDIV_10_20_MHZ_VAL 4
-#define DA7213_PLL_INDIV_20_40_MHZ_VAL 8
-#define DA7213_PLL_INDIV_40_54_MHZ_VAL 16
-#define DA7213_SRM_CHECK_RETRIES 8
+#define DA7213_SYSCLK_MCLK 0
+#define DA7213_SYSCLK_PLL 1
+#define DA7213_PLL_FREQ_OUT_90316800 90316800
+#define DA7213_PLL_FREQ_OUT_98304000 98304000
+#define DA7213_PLL_FREQ_OUT_94310400 94310400
+#define DA7213_PLL_INDIV_5_TO_9_MHZ_VAL 2
+#define DA7213_PLL_INDIV_9_TO_18_MHZ_VAL 4
+#define DA7213_PLL_INDIV_18_TO_36_MHZ_VAL 8
+#define DA7213_PLL_INDIV_36_TO_54_MHZ_VAL 16
+#define DA7213_SRM_CHECK_RETRIES 8
enum da7213_clk_src {
DA7213_CLKSRC_MCLK = 0,