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board: 96b_argonkey: Add on-board MP34DT05 microphone support in BSP
This commit is taking care of following stuff: 1. pinmux: STM32F4 micro is using I2S5_CK and I2S_SD to interface with on-board microphone. 2. default configuration: - enable I2S5 and configure PLLI2S properly to generate I2SxCLK = 128MHz. - enable DMA Note: As stated in issue zephyrproject-rtos#9028 we needed to take care of a known SPI/I2S bug implementing the following two actions: A. APB2 clock has been slowed down to 42MHz. B. The SPI/I2S clock gpio speed has been set to very_high_speed. Signed-off-by: Armando Visconti <armando.visconti@st.com>
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@@ -68,6 +68,10 @@ | |
}; | ||
}; | ||
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&i2s5 { | ||
status = "ok"; | ||
}; | ||
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&i2c1 { | ||
status = "ok"; | ||
clock-frequency = <I2C_BITRATE_FAST>; | ||
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