Enable MI2S_1_MCLK mclock for external codec

Products Support DragonBoard410c
#1

Hi team,

Can you please tell me how to enable or configure gpio_116 as a MI2S_1_MCLK for external codec mclk.

Thanks,
Arjun salariya

#2

is there any update?

#3

@arjun.salariya Have you tried these instructions? https://github.com/96boards/documentation/blob/master/consumer/dragonboard/dragonboard410c/guides/enable-ls-i2s.md

This should get MCLK output on gpio_116 I believe.

#4

Hi mani,

Thanks for response,

i have tried instruction which you suggest but it doesn’t get any success.
Can you please share 0x07702004 (spkr_iomux) and 0x07702000( mic-iomux) register description for enable mclk and External Secondary MI2S MUX with Quatenary MI2S as full duplex. i can’t find above register description in HRD as well.

Thanks,
Arjun

#5

Hi mani,

We got the register setting from android source code and resolve this issue.
find Below is a solution.

— a/sound/soc/qcom/apq8016_sbc.c
+++ b/sound/soc/qcom/apq8016_sbc.c
@@ -57,8 +57,9 @@ static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)

    case MI2S_QUATERNARY:
            /* Configure the Quat MI2S to TLMM */

– writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
– MIC_CTRL_TLMM_SCLK_EN,
++ writel(readl(pdata->spkr_iomux) | 0x00000002,
++ pdata->spkr_iomux);
++ writel(readl(pdata->mic_iomux) | 0x2020002,
pdata->mic_iomux);
break;
case MI2S_TERTIARY:

Thanks,
Arjun

#6

Why a picture? Just post the text.