[imx8qmmek][rpmsg][remoteproc] remoteproc and rpmsg fail.

WolsYang — Wed, 19 Jan 2022 09:08:15 GMT

I am trying to do remoteproc and rpmsg with i.MX 8QMax MEK Linux Binary Demo files and i.MX Yocto Project User's Guide, Rev. LF5.10.72_2.2.0, 17 December 2021.

My M4 image is come from Demo files/imx_mcore_demos/imx8qm_m4_TCM_hello_world_m40.bin &

i.MX8QM-MEK-MCUSDK/m4/boards/mekmimx8qm/multicore_examples/rpmsg_lite_str_echo_rtos/cm4_core0/armgcc/debug/rpmsg_lite_str_echo_rtos_imxcm4_m40.elf

And Linux image comming from Yocto version is 5.10.72-lts-5.10.y+ga68e31b63f86 :

$ DISTRO=fsl-imx-wayland MACHINE=imx8qmmek source imx-setup-release.sh -b build $ bitbake imx-image-full

===============================================================================

When I power on, M4 print hello world and keep go into Linux shell..

Then I do modprobe imx_rpmsg_tty and fail

root@imx8qmmek:~# modprobe imx_rpmsg_tty modprobe: FATAL: Module imx_rpmsg_tty not found in directory /lib/modules/5.10.72-lts-5.10.y+ga68e31b63f86

Change M4 firmware through remotproc also fail

root@imx8qmmek:~# cd /lib/firmware/ root@imx8qmmek:/lib/firmware# echo rpmsg_lite_str_echo_rtos_imxcm4_m40.elf > /sys/class/remoteproc/remoteproc0/firmware root@imx8qmmek:/lib/firmware# cat /sys/class/remoteproc/remoteproc0/firmware rpmsg_lite_str_echo_rtos_imxcm4_m40.elf root@imx8qmmek:/lib/firmware# cat /sys/class/remoteproc/remoteproc0/state offline root@imx8qmmek:/lib/firmware# echo start > /sys/class/remoteproc/remoteproc0/state

[ 869.481128] remoteproc remoteproc0: powering up imx-dsp-rproc [ 869.494189] remoteproc remoteproc0: Booting fw image rpmsg_lite_str_echo_rtos_imxcm4_m40.elf, size 512636 [ 869.544564] remoteproc remoteproc0: Registered carveout doesn't fit da request [ 869.551943] remoteproc remoteproc0: Failed to process resources: -12 [ 869.558636] remoteproc remoteproc0: Boot failed: -12 -sh: echo: write error: Cannot allocate memory

==============================================================================

This is dts I am use showing in uboot（u-boot => printenv）.

fdt_file=imx8qm-mek-rpmsg.dtb

Also I check the kernel config, it is already turn on rpmsg:

root@imx8qmmek:/lib/firmware# uname -r 5.10.72-lts-5.10.y+ga68e31b63f86 root@imx8qmmek:/lib/firmware# zcat /proc/config.gz | grep -i rpmsg CONFIG_KEYBOARD_RPMSG=y CONFIG_GPIO_IMX_RPMSG=y # CONFIG_REGULATOR_PF1550_RPMSG is not set CONFIG_SND_SOC_FSL_RPMSG=y CONFIG_SND_SOC_IMX_AUDIO_RPMSG=y CONFIG_SND_SOC_IMX_PCM_RPMSG=y CONFIG_SND_SOC_IMX_RPMSG=y CONFIG_SND_SOC_RPMSG_WM8960=y CONFIG_SND_SOC_RPMSG_WM8960_I2C=y CONFIG_SND_SOC_RPMSG_AK4497=y CONFIG_RTC_DRV_IMX_RPMSG=y # CONFIG_CROS_EC_RPMSG is not set # Rpmsg drivers CONFIG_RPMSG=y CONFIG_RPMSG_CHAR=y CONFIG_RPMSG_CTRL=y CONFIG_RPMSG_NS=y CONFIG_RPMSG_QCOM_GLINK=y CONFIG_RPMSG_QCOM_GLINK_RPM=y CONFIG_RPMSG_VIRTIO=y CONFIG_HAVE_IMX_RPMSG=y CONFIG_IMX_RPMSG_PINGPONG=m CONFIG_IMX_RPMSG_TTY=m # end of Rpmsg drivers CONFIG_RPMSG_LIFE_CYCLE=y

Re: [imx8qmmek][rpmsg][remoteproc] remoteproc and rpmsg fail.

WolsYang — Wed, 19 Jan 2022 09:18:13 GMT

To fix the missing imx_rpmsg_tty kernel module error :

Add this line to your layer.conf.

IMAGE_INSTALL_append = "kernel-modules"

I think kernel modules should install automatically, but now just add it and fix the problem : )

The remoteproc still falling hopefully got good news soon : (

Re: [imx8qmmek][rpmsg][remoteproc] remoteproc and rpmsg fail.

bhupiister — Wed, 06 Aug 2025 23:23:54 GMT

@WolsYang were you able to solve the second issue?

-sh: echo: write error: Cannot allocate memory

Re: [imx8qmmek][rpmsg][remoteproc] remoteproc and rpmsg fail.

WolsYang — Thu, 07 Aug 2025 01:16:24 GMT

No
We didn't follow up this function

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