RT5645_AD_DA_MIXER (0x29) register will not be reset to default after
SW reset. So we have to write it to its default value in i2c_probe.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
        regmap_read(regmap, RT5645_VENDOR_ID, &val);
        rt5645->v_id = val & 0xff;
 
+       regmap_write(rt5645->regmap, RT5645_AD_DA_MIXER, 0x8080);
+
        ret = regmap_register_patch(rt5645->regmap, init_list,
                                    ARRAY_SIZE(init_list));
        if (ret != 0)