https://community.nxp.com/t5/NavQ-8MMNavQ-Discussion/Navq-RPMSG-for-M4-use/m-p/1183630#M38 <P>what m4 side log shows? what kernel verison are u using? Seems virtio channel not created, if ttyRPMSG not created after you insmod&nbsp;<SPAN>imx_rpmsg_tty.ko</SPAN></P> Mon, 16 Nov 2020 06:55:49 GMT Peng_Fan 2020-11-16T06:55:49Z https://community.nxp.com/t5/NavQ-8MMNavQ-Discussion/Navq-RPMSG-for-M4-use/m-p/1149278#M20 <P>Hi everyone,</P><P>I am working with the <STRONG>rpmsg_lite_str_echo_rtos_imxcm4 </STRONG>and having some mishaps.  </P><P>Following the readme.txt from the example, i am able to load the .bin to the M4 core.  </P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="m4.png" style="width: 551px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/124429i04316C463A84BD25/image-dimensions/551x84?v=v2" width="551" height="84" role="button" title="m4.png" alt="m4.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">m4.png</span></span></P><P>(although is weird to me why core stack is not at 0x007e0000)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="dmesg.png" style="width: 542px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/124430iB098640125D28438/image-dimensions/542x126?v=v2" width="542" height="126" role="button" title="dmesg.png" alt="dmesg.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">dmesg.png</span></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lsmod.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/124431i59030BBEA3EBDB3B/image-size/medium?v=v2&amp;px=400" role="button" title="lsmod.png" alt="lsmod.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">lsmod.png</span></span></P><P>But i am not able to see the /dev/ttyRPMSG30 device driver supposed to be created when the imx_rpmsg_tty kernel module is loaded. Thus failing when:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="tty.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/124433iA4EEBDFD5584BCA1/image-size/medium?v=v2&amp;px=400" role="button" title="tty.png" alt="tty.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">tty.png</span></span></P><P>Doing some research i found that imx8mm-navq.dtb disables rpmsg</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="rpmsg.png" style="width: 498px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/124434i77FC0FE00BA663CF/image-dimensions/498x60?v=v2" width="498" height="60" role="button" title="rpmsg.png" alt="rpmsg.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">rpmsg.png</span></span></P><P>could that be the reason?</P><P>&nbsp;</P><P>Thanks in advance</P> Sat, 05 Sep 2020 22:16:49 GMT https://community.nxp.com/t5/NavQ-8MMNavQ-Discussion/Navq-RPMSG-for-M4-use/m-p/1149278#M20 fabianmpa019 2020-09-05T22:16:49Z https://community.nxp.com/t5/NavQ-8MMNavQ-Discussion/Navq-RPMSG-for-M4-use/m-p/1183630#M38 <P>what m4 side log shows? what kernel verison are u using? Seems virtio channel not created, if ttyRPMSG not created after you insmod&nbsp;<SPAN>imx_rpmsg_tty.ko</SPAN></P> Mon, 16 Nov 2020 06:55:49 GMT https://community.nxp.com/t5/NavQ-8MMNavQ-Discussion/Navq-RPMSG-for-M4-use/m-p/1183630#M38 Peng_Fan 2020-11-16T06:55:49Z