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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>
This commit is contained in:
Adam Thomson 2016-05-10 16:11:07 +01:00 коммит произвёл Mark Brown
Родитель 7e28fd4696
Коммит 1e62c52ddc
2 изменённых файлов: 27 добавлений и 27 удалений
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26
sound/soc/codecs/da7213.c
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@ -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;
}

28
sound/soc/codecs/da7213.h
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@ -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,