FRDM-MX95 5 sai?

[FlynHawaiian]

I am wondering if it’s possible to enable all 5 of the SAI channels on the frdm or what the limitation is on the FRDM-MX95.  I’m also wondering how you configure them.  I plan to use Android automotive as the OS or Yocto, just unsure which yet. 

[FlynHawaiian]

so basically sai3 is the only possible for full functionality? 

Is there a gui program where I can see the device tree and modify what each gpio I would want to be?

Would it be possible to set it to TDM mode, and send the audio to an analog devices adsp-21594, and let it handle the audio inputs from other devices and the main output?

Do you know what the audio output is from the sai3 tdm stream? Is it 32/768?

[Zhiming_Liu]

Hi @FlynHawaiian 

SAI1-5 can be connected to the following pads

SAI1:

I2C2_SCL / I2C2_SDA
UART2_RXD
SAI1_TXFS / SAI1_TXC / SAI1_TXD0 / SAI1_RXD0

SAI2: IMX95_PAD_ENET2_XXX/IMX95_PAD_XSPI1_XXX

SAI3: 

GPIO_IO12

GPIO_IO16 ~ GPIO_IO21

GPIO_IO26

SAI4:

ENET2_TD[2:0]

ENET2_RXC

ENET2_RD[1:0]

XSPI1_DATA[3:0]

XSPI1_SCLK

XSPI1_SS0_B

SAI5:

SD3_CLK / SD3_CMD / SD3_DATA[3:0]

XSPI1_DATA[7:4]

XSPI1_DQS

XSPI1_SS1_B

Next, let’s look at the device tree configuration in FRDM（arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts）.

SAI Module	Can it be fully muxed out currently?	Main Reason
SAI1	No, only partially	Some SAI1 PADs are occupied by lpi2c2 and mqs1
SAI2	Basically no	The main PAD group ENET2_* is occupied by Ethernet and MDIO
SAI3	Yes, recommended	The related GPIO_IO PADs are not occupied in the current DTS
SAI4	No, only partially	The main PAD group ENET2_* is occupied by Ethernet, and some XSPI1 PADs are also occupied by GPIO functions
SAI5	No, only partially	SD3_* is occupied by usdhc3 / WiFi SDIO, and some XSPI1 PADs are also occupied

Best Regards,
Zhiming