AM625: 09.02.01.09 SDK fails to configure MCU GPIO.

cao zhixian

Part Number: AM625

Hello TI

The version of SDK I use:ti-processor-sdk-linux-rt-am62xx-evm-09.02.01.09

The problem is described as follows:

I tried to configure the GPIO of the M4FSS core on the device tree, but I found that the gpio of the M4FSS core did not work after the system started.

I hope you can help me.

over 1 year ago

0 Tushar Thakur over 1 year ago

TI__Guru 50288 points

Hello,

Thanks for reaching out to Texas Instruments E2E support forum.

Can you please share the second screenshot again?

The above shared screenshot is not visible.

Regards,

Tushar

0 cao zhixian over 1 year ago in reply to Tushar Thakur

Prodigy 180 points

After using cat /sys/kernel/debug/gpio command, the gpiochip information of M4FSS is not obtained.

The gpiochip information of the A53 core can be obtained normally. I want to know why.

+1 Anshu Madwesh over 1 year ago in reply to cao zhixian

TI__Mastermind 18600 points

Hello,

In the more recent SDK versions, the MCU_GPIO module is set to reserved in Linux, so Linux will not try to claim it. You can try to change the node status to "status = okay";

See here for the Device Tree: https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi?h=ti-linux-6.1.y#n580

Best Regards,

Anshu

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AM625: 09.02.01.09 SDK fails to configure MCU GPIO.