https://community.nxp.com/t5/i-MX-Processors/RPMsg-Lite-rpmsg-lite-alloc-tx-buffer-Blocks/m-p/2167007#M240655 <P>I'm encountering an issue with the RPMsg-Lite communication between the Cortex-M33 and the Cortex-A55 on the i.MX93.</P><P>When the A55 enters suspend mode, any call to rpmsg_lite_alloc_tx_buffer() on the M33 side either blocks indefinitely or results in a hard fault, depending on the exact circumstances. The function rpmsg_lite_is_link_up() continues to return true, which prevents detecting this state cleanly.</P> Wed, 10 Sep 2025 20:39:50 GMT Winsonfk 2025-09-10T20:39:50Z https://community.nxp.com/t5/i-MX-Processors/RPMsg-Lite-rpmsg-lite-alloc-tx-buffer-Blocks/m-p/2167007#M240655 <P>I'm encountering an issue with the RPMsg-Lite communication between the Cortex-M33 and the Cortex-A55 on the i.MX93.</P><P>When the A55 enters suspend mode, any call to rpmsg_lite_alloc_tx_buffer() on the M33 side either blocks indefinitely or results in a hard fault, depending on the exact circumstances. The function rpmsg_lite_is_link_up() continues to return true, which prevents detecting this state cleanly.</P> Wed, 10 Sep 2025 20:39:50 GMT https://community.nxp.com/t5/i-MX-Processors/RPMsg-Lite-rpmsg-lite-alloc-tx-buffer-Blocks/m-p/2167007#M240655 Winsonfk 2025-09-10T20:39:50Z