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- speaker使能管脚 spk-ctrl-gpios
- 可以由sa8901的gpio使能/sa6920的gpio使能(E3)
- i2s clk源配置 ?
- 独立晶振配置 / 从6920供给clk（E3）
- mic 2.8V电使能
- 可以由6920控制 / 可以直接使能
- vad管脚（todo）
- ldo-en的配置
- 如果是E芯片 0xff
- 如果是E3芯片 0x9f bit5VDDIO_18(影响功耗) bit6