i.MX ProcessorsのトピックRe: FRDM-MX95 5 sai?

FRDM-MX95 5 sai?

FlynHawaiian — Sun, 10 May 2026 07:01:38 GMT

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.

Re: FRDM-MX95 5 sai?

Zhiming_Liu — Tue, 12 May 2026 00:39:29 GMT

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

Re: FRDM-MX95 5 sai?

FlynHawaiian — Tue, 12 May 2026 04:39:53 GMT

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?