We have connected one Digital Microphone with SC600T Board on mi2s_2 interface , below is the pin description for the same.
Digital Microphone SC600T
WS FP_SPI_CS/MI2S_2_WS ( GPIO 136)
SD FP_SPI_MOSI/MI2S_2_D0 ( GPIO 137 )
SCK FP_SPI_CLK/MI2S_2_SCK ( GPIO 135)
We have provided 1.8 volt Supply to digital microphone externally.
Can you please provide the software changes that we have to make in AOSP to bring up this microphone?
software changes like
device tree Modification
platform/machine/codec driver modification if any
What Mixer and Routing changes are required
How to capture the Sound using tinyalsa user space utility
Please let us know if you have any questions.