root/sound/soc/mediatek/mt8186/mt8186-afe-clk.c
// SPDX-License-Identifier: GPL-2.0
//
// mt8186-afe-clk.c  --  Mediatek 8186 afe clock ctrl
//
// Copyright (c) 2022 MediaTek Inc.
// Author: Jiaxin Yu <jiaxin.yu@mediatek.com>

#include <linux/clk.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>

#include "mt8186-afe-common.h"
#include "mt8186-afe-clk.h"
#include "mt8186-audsys-clk.h"

static const char *aud_clks[CLK_NUM] = {
        [CLK_AFE] = "aud_afe_clk",
        [CLK_DAC] = "aud_dac_clk",
        [CLK_DAC_PREDIS] = "aud_dac_predis_clk",
        [CLK_ADC] = "aud_adc_clk",
        [CLK_TML] = "aud_tml_clk",
        [CLK_APLL22M] = "aud_apll22m_clk",
        [CLK_APLL24M] = "aud_apll24m_clk",
        [CLK_APLL1_TUNER] = "aud_apll_tuner_clk",
        [CLK_APLL2_TUNER] = "aud_apll2_tuner_clk",
        [CLK_TDM] = "aud_tdm_clk",
        [CLK_NLE] = "aud_nle_clk",
        [CLK_DAC_HIRES] = "aud_dac_hires_clk",
        [CLK_ADC_HIRES] = "aud_adc_hires_clk",
        [CLK_I2S1_BCLK] = "aud_i2s1_bclk",
        [CLK_I2S2_BCLK] = "aud_i2s2_bclk",
        [CLK_I2S3_BCLK] = "aud_i2s3_bclk",
        [CLK_I2S4_BCLK] = "aud_i2s4_bclk",
        [CLK_CONNSYS_I2S_ASRC] = "aud_connsys_i2s_asrc",
        [CLK_GENERAL1_ASRC] = "aud_general1_asrc",
        [CLK_GENERAL2_ASRC] = "aud_general2_asrc",
        [CLK_ADC_HIRES_TML] = "aud_adc_hires_tml",
        [CLK_ADDA6_ADC] = "aud_adda6_adc",
        [CLK_ADDA6_ADC_HIRES] = "aud_adda6_adc_hires",
        [CLK_3RD_DAC] = "aud_3rd_dac",
        [CLK_3RD_DAC_PREDIS] = "aud_3rd_dac_predis",
        [CLK_3RD_DAC_TML] = "aud_3rd_dac_tml",
        [CLK_3RD_DAC_HIRES] = "aud_3rd_dac_hires",
        [CLK_ETDM_IN1_BCLK] = "aud_etdm_in1_bclk",
        [CLK_ETDM_OUT1_BCLK] = "aud_etdm_out1_bclk",
        [CLK_INFRA_SYS_AUDIO] = "aud_infra_clk",
        [CLK_INFRA_AUDIO_26M] = "mtkaif_26m_clk",
        [CLK_MUX_AUDIO] = "top_mux_audio",
        [CLK_MUX_AUDIOINTBUS] = "top_mux_audio_int",
        [CLK_TOP_MAINPLL_D2_D4] = "top_mainpll_d2_d4",
        [CLK_TOP_MUX_AUD_1] = "top_mux_aud_1",
        [CLK_TOP_APLL1_CK] = "top_apll1_ck",
        [CLK_TOP_MUX_AUD_2] = "top_mux_aud_2",
        [CLK_TOP_APLL2_CK] = "top_apll2_ck",
        [CLK_TOP_MUX_AUD_ENG1] = "top_mux_aud_eng1",
        [CLK_TOP_APLL1_D8] = "top_apll1_d8",
        [CLK_TOP_MUX_AUD_ENG2] = "top_mux_aud_eng2",
        [CLK_TOP_APLL2_D8] = "top_apll2_d8",
        [CLK_TOP_MUX_AUDIO_H] = "top_mux_audio_h",
        [CLK_TOP_I2S0_M_SEL] = "top_i2s0_m_sel",
        [CLK_TOP_I2S1_M_SEL] = "top_i2s1_m_sel",
        [CLK_TOP_I2S2_M_SEL] = "top_i2s2_m_sel",
        [CLK_TOP_I2S4_M_SEL] = "top_i2s4_m_sel",
        [CLK_TOP_TDM_M_SEL] = "top_tdm_m_sel",
        [CLK_TOP_APLL12_DIV0] = "top_apll12_div0",
        [CLK_TOP_APLL12_DIV1] = "top_apll12_div1",
        [CLK_TOP_APLL12_DIV2] = "top_apll12_div2",
        [CLK_TOP_APLL12_DIV4] = "top_apll12_div4",
        [CLK_TOP_APLL12_DIV_TDM] = "top_apll12_div_tdm",
        [CLK_CLK26M] = "top_clk26m_clk",
};

int mt8186_set_audio_int_bus_parent(struct mtk_base_afe *afe,
                                    int clk_id)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret;

        ret = clk_set_parent(afe_priv->clk[CLK_MUX_AUDIOINTBUS],
                             afe_priv->clk[clk_id]);
        if (ret) {
                dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                        __func__, aud_clks[CLK_MUX_AUDIOINTBUS],
                        aud_clks[clk_id], ret);
                return ret;
        }

        return 0;
}

static int apll1_mux_setting(struct mtk_base_afe *afe, bool enable)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret;

        if (enable) {
                ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_1]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_1], ret);
                        return ret;
                }
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_1],
                                     afe_priv->clk[CLK_TOP_APLL1_CK]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_1],
                                aud_clks[CLK_TOP_APLL1_CK], ret);
                        return ret;
                }

                /* 180.6336 / 8 = 22.5792MHz */
                ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_ENG1]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG1], ret);
                        return ret;
                }
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_ENG1],
                                     afe_priv->clk[CLK_TOP_APLL1_D8]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG1],
                                aud_clks[CLK_TOP_APLL1_D8], ret);
                        return ret;
                }
        } else {
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_ENG1],
                                     afe_priv->clk[CLK_CLK26M]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG1],
                                aud_clks[CLK_CLK26M], ret);
                        return ret;
                }
                clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_ENG1]);

                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_1],
                                     afe_priv->clk[CLK_CLK26M]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_1],
                                aud_clks[CLK_CLK26M], ret);
                        return ret;
                }
                clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_1]);
        }

        return 0;
}

static int apll2_mux_setting(struct mtk_base_afe *afe, bool enable)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret;

        if (enable) {
                ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_2]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_2], ret);
                        return ret;
                }
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_2],
                                     afe_priv->clk[CLK_TOP_APLL2_CK]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_2],
                                aud_clks[CLK_TOP_APLL2_CK], ret);
                        return ret;
                }

                /* 196.608 / 8 = 24.576MHz */
                ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_ENG2]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG2], ret);
                        return ret;
                }
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_ENG2],
                                     afe_priv->clk[CLK_TOP_APLL2_D8]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG2],
                                aud_clks[CLK_TOP_APLL2_D8], ret);
                        return ret;
                }
        } else {
                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_ENG2],
                                     afe_priv->clk[CLK_CLK26M]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_ENG2],
                                aud_clks[CLK_CLK26M], ret);
                        return ret;
                }
                clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_ENG2]);

                ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD_2],
                                     afe_priv->clk[CLK_CLK26M]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[CLK_TOP_MUX_AUD_2],
                                aud_clks[CLK_CLK26M], ret);
                        return ret;
                }
                clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_2]);
        }

        return 0;
}

int mt8186_afe_enable_cgs(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret = 0;
        int i;

        for (i = CLK_I2S1_BCLK; i <= CLK_ETDM_OUT1_BCLK; i++) {
                ret = clk_prepare_enable(afe_priv->clk[i]);
                if (ret) {
                        dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[i], ret);
                        return ret;
                }
        }

        return 0;
}

void mt8186_afe_disable_cgs(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int i;

        for (i = CLK_I2S1_BCLK; i <= CLK_ETDM_OUT1_BCLK; i++)
                clk_disable_unprepare(afe_priv->clk[i]);
}

int mt8186_afe_enable_clock(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret = 0;

        ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_SYS_AUDIO]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_INFRA_SYS_AUDIO], ret);
                goto clk_infra_sys_audio_err;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_AUDIO_26M]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_INFRA_AUDIO_26M], ret);
                goto clk_infra_audio_26m_err;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_MUX_AUDIO]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_MUX_AUDIO], ret);
                goto clk_mux_audio_err;
        }
        ret = clk_set_parent(afe_priv->clk[CLK_MUX_AUDIO],
                             afe_priv->clk[CLK_CLK26M]);
        if (ret) {
                dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                        __func__, aud_clks[CLK_MUX_AUDIO],
                        aud_clks[CLK_CLK26M], ret);
                goto clk_mux_audio_err;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_MUX_AUDIOINTBUS]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_MUX_AUDIOINTBUS], ret);
                goto clk_mux_audio_intbus_err;
        }
        ret = mt8186_set_audio_int_bus_parent(afe,
                                              CLK_TOP_MAINPLL_D2_D4);
        if (ret)
                goto clk_mux_audio_intbus_parent_err;

        ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUDIO_H],
                             afe_priv->clk[CLK_TOP_APLL2_CK]);
        if (ret) {
                dev_err(afe->dev, "%s clk_set_parent %s-%s fail %d\n",
                        __func__, aud_clks[CLK_TOP_MUX_AUDIO_H],
                        aud_clks[CLK_TOP_APLL2_CK], ret);
                goto clk_mux_audio_h_parent_err;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_AFE]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_AFE], ret);
                goto clk_afe_err;
        }

        return 0;

clk_afe_err:
        clk_disable_unprepare(afe_priv->clk[CLK_AFE]);
clk_mux_audio_h_parent_err:
clk_mux_audio_intbus_parent_err:
        mt8186_set_audio_int_bus_parent(afe, CLK_CLK26M);
clk_mux_audio_intbus_err:
        clk_disable_unprepare(afe_priv->clk[CLK_MUX_AUDIOINTBUS]);
clk_mux_audio_err:
        clk_disable_unprepare(afe_priv->clk[CLK_MUX_AUDIO]);
clk_infra_sys_audio_err:
        clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUDIO]);
clk_infra_audio_26m_err:
        clk_disable_unprepare(afe_priv->clk[CLK_INFRA_AUDIO_26M]);

        return ret;
}

void mt8186_afe_disable_clock(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        clk_disable_unprepare(afe_priv->clk[CLK_AFE]);
        mt8186_set_audio_int_bus_parent(afe, CLK_CLK26M);
        clk_disable_unprepare(afe_priv->clk[CLK_MUX_AUDIOINTBUS]);
        clk_disable_unprepare(afe_priv->clk[CLK_MUX_AUDIO]);
        clk_disable_unprepare(afe_priv->clk[CLK_INFRA_AUDIO_26M]);
        clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUDIO]);
}

int mt8186_apll1_enable(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret;

        /* setting for APLL */
        apll1_mux_setting(afe, true);

        ret = clk_prepare_enable(afe_priv->clk[CLK_APLL22M]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_APLL22M], ret);
                goto err_clk_apll22m;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_APLL1_TUNER]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_APLL1_TUNER], ret);
                goto err_clk_apll1_tuner;
        }

        regmap_update_bits(afe->regmap, AFE_APLL1_TUNER_CFG, 0xfff7, 0x832);
        regmap_update_bits(afe->regmap, AFE_APLL1_TUNER_CFG, 0x1, 0x1);

        regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
                           AFE_22M_ON_MASK_SFT, BIT(AFE_22M_ON_SFT));

        return 0;

err_clk_apll1_tuner:
        clk_disable_unprepare(afe_priv->clk[CLK_APLL1_TUNER]);
err_clk_apll22m:
        clk_disable_unprepare(afe_priv->clk[CLK_APLL22M]);

        return ret;
}

void mt8186_apll1_disable(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
                           AFE_22M_ON_MASK_SFT, 0);

        regmap_update_bits(afe->regmap, AFE_APLL1_TUNER_CFG, 0x1, 0);

        clk_disable_unprepare(afe_priv->clk[CLK_APLL1_TUNER]);
        clk_disable_unprepare(afe_priv->clk[CLK_APLL22M]);

        apll1_mux_setting(afe, false);
}

int mt8186_apll2_enable(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int ret;

        /* setting for APLL */
        apll2_mux_setting(afe, true);

        ret = clk_prepare_enable(afe_priv->clk[CLK_APLL24M]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_APLL24M], ret);
                goto err_clk_apll24m;
        }

        ret = clk_prepare_enable(afe_priv->clk[CLK_APLL2_TUNER]);
        if (ret) {
                dev_err(afe->dev, "%s clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[CLK_APLL2_TUNER], ret);
                goto err_clk_apll2_tuner;
        }

        regmap_update_bits(afe->regmap, AFE_APLL2_TUNER_CFG, 0xfff7, 0x634);
        regmap_update_bits(afe->regmap, AFE_APLL2_TUNER_CFG, 0x1, 0x1);

        regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
                           AFE_24M_ON_MASK_SFT, BIT(AFE_24M_ON_SFT));

        return 0;

err_clk_apll2_tuner:
        clk_disable_unprepare(afe_priv->clk[CLK_APLL2_TUNER]);
err_clk_apll24m:
        clk_disable_unprepare(afe_priv->clk[CLK_APLL24M]);

        return ret;
}

void mt8186_apll2_disable(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
                           AFE_24M_ON_MASK_SFT, 0);

        regmap_update_bits(afe->regmap, AFE_APLL2_TUNER_CFG, 0x1, 0);

        clk_disable_unprepare(afe_priv->clk[CLK_APLL2_TUNER]);
        clk_disable_unprepare(afe_priv->clk[CLK_APLL24M]);

        apll2_mux_setting(afe, false);
}

int mt8186_get_apll_rate(struct mtk_base_afe *afe, int apll)
{
        return (apll == MT8186_APLL1) ? 180633600 : 196608000;
}

int mt8186_get_apll_by_rate(struct mtk_base_afe *afe, int rate)
{
        return ((rate % 8000) == 0) ? MT8186_APLL2 : MT8186_APLL1;
}

int mt8186_get_apll_by_name(struct mtk_base_afe *afe, const char *name)
{
        if (strcmp(name, APLL1_W_NAME) == 0)
                return MT8186_APLL1;

        return MT8186_APLL2;
}

/* mck */
struct mt8186_mck_div {
        u32 m_sel_id;
        u32 div_clk_id;
};

static const struct mt8186_mck_div mck_div[MT8186_MCK_NUM] = {
        [MT8186_I2S0_MCK] = {
                .m_sel_id = CLK_TOP_I2S0_M_SEL,
                .div_clk_id = CLK_TOP_APLL12_DIV0,
        },
        [MT8186_I2S1_MCK] = {
                .m_sel_id = CLK_TOP_I2S1_M_SEL,
                .div_clk_id = CLK_TOP_APLL12_DIV1,
        },
        [MT8186_I2S2_MCK] = {
                .m_sel_id = CLK_TOP_I2S2_M_SEL,
                .div_clk_id = CLK_TOP_APLL12_DIV2,
        },
        [MT8186_I2S4_MCK] = {
                .m_sel_id = CLK_TOP_I2S4_M_SEL,
                .div_clk_id = CLK_TOP_APLL12_DIV4,
        },
        [MT8186_TDM_MCK] = {
                .m_sel_id = CLK_TOP_TDM_M_SEL,
                .div_clk_id = CLK_TOP_APLL12_DIV_TDM,
        },
};

int mt8186_mck_enable(struct mtk_base_afe *afe, int mck_id, int rate)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int apll = mt8186_get_apll_by_rate(afe, rate);
        int apll_clk_id = apll == MT8186_APLL1 ?
                          CLK_TOP_MUX_AUD_1 : CLK_TOP_MUX_AUD_2;
        int m_sel_id = mck_div[mck_id].m_sel_id;
        int div_clk_id = mck_div[mck_id].div_clk_id;
        int ret;

        /* select apll */
        if (m_sel_id >= 0) {
                ret = clk_prepare_enable(afe_priv->clk[m_sel_id]);
                if (ret) {
                        dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
                                __func__, aud_clks[m_sel_id], ret);
                        return ret;
                }
                ret = clk_set_parent(afe_priv->clk[m_sel_id],
                                     afe_priv->clk[apll_clk_id]);
                if (ret) {
                        dev_err(afe->dev, "%s(), clk_set_parent %s-%s fail %d\n",
                                __func__, aud_clks[m_sel_id],
                                aud_clks[apll_clk_id], ret);
                        return ret;
                }
        }

        /* enable div, set rate */
        ret = clk_prepare_enable(afe_priv->clk[div_clk_id]);
        if (ret) {
                dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
                        __func__, aud_clks[div_clk_id], ret);
                return ret;
        }
        ret = clk_set_rate(afe_priv->clk[div_clk_id], rate);
        if (ret) {
                dev_err(afe->dev, "%s(), clk_set_rate %s, rate %d, fail %d\n",
                        __func__, aud_clks[div_clk_id], rate, ret);
                return ret;
        }

        return 0;
}

void mt8186_mck_disable(struct mtk_base_afe *afe, int mck_id)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        int m_sel_id = mck_div[mck_id].m_sel_id;
        int div_clk_id = mck_div[mck_id].div_clk_id;

        clk_disable_unprepare(afe_priv->clk[div_clk_id]);
        if (m_sel_id >= 0)
                clk_disable_unprepare(afe_priv->clk[m_sel_id]);
}

int mt8186_init_clock(struct mtk_base_afe *afe)
{
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        struct device_node *of_node = afe->dev->of_node;
        int i = 0;

        mt8186_audsys_clk_register(afe);

        afe_priv->clk = devm_kcalloc(afe->dev, CLK_NUM, sizeof(*afe_priv->clk),
                                     GFP_KERNEL);
        if (!afe_priv->clk)
                return -ENOMEM;

        for (i = 0; i < CLK_NUM; i++) {
                afe_priv->clk[i] = devm_clk_get(afe->dev, aud_clks[i]);
                if (IS_ERR(afe_priv->clk[i])) {
                        dev_err(afe->dev, "%s devm_clk_get %s fail, ret %ld\n",
                                __func__,
                                aud_clks[i], PTR_ERR(afe_priv->clk[i]));
                        afe_priv->clk[i] = NULL;
                }
        }

        afe_priv->apmixedsys = syscon_regmap_lookup_by_phandle(of_node,
                                                               "mediatek,apmixedsys");
        if (IS_ERR(afe_priv->apmixedsys)) {
                dev_err(afe->dev, "%s() Cannot find apmixedsys controller: %ld\n",
                        __func__, PTR_ERR(afe_priv->apmixedsys));
                return PTR_ERR(afe_priv->apmixedsys);
        }

        afe_priv->topckgen = syscon_regmap_lookup_by_phandle(of_node,
                                                             "mediatek,topckgen");
        if (IS_ERR(afe_priv->topckgen)) {
                dev_err(afe->dev, "%s() Cannot find topckgen controller: %ld\n",
                        __func__, PTR_ERR(afe_priv->topckgen));
                return PTR_ERR(afe_priv->topckgen);
        }

        afe_priv->infracfg = syscon_regmap_lookup_by_phandle(of_node,
                                                             "mediatek,infracfg");
        if (IS_ERR(afe_priv->infracfg)) {
                dev_err(afe->dev, "%s() Cannot find infracfg: %ld\n",
                        __func__, PTR_ERR(afe_priv->infracfg));
                return PTR_ERR(afe_priv->infracfg);
        }

        return 0;
}