use print_hex_dump_debug() in imx_rpmsg_tty.c #20
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print_hex_dump_debug() uses print_hex_dump(KERN_DEBUG) if CONFIG_DYNAMIC_DEBUG is not set, but is uses Dynamic Debug if CONFIG_DYNAMIC_DEBUG is set. Without this change, print_hex_dump(KERN_DEBUG) is used even if CONFIG_DYNAMIC_DEBUG is set, and so the end user cannot benefit from Dynamic Debug even it's enabled. And all the messages sen to to rpmsg are logged into the journal without an easy way to disable this (the only way is to change the logging level for the whole kernel !!!!). Even when Dynamic Debu is enabled and available. See support case 00636789
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Jul 28, 2025
* Initial sound card integration * Added reserved memory space for Cortex-M4 * Added corrections to SAI clock pads and removed unnecessary IO settings * Override the ALSA slot width. reset it to 32-bit * Fixed wrong bus clock setting * Corrected the clock sync setting of SAI 1,3 so that the RX follows the bit clock of the TX
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print_hex_dump_debug() uses print_hex_dump(KERN_DEBUG) if CONFIG_DYNAMIC_DEBUG is not set, but is uses Dynamic Debug if CONFIG_DYNAMIC_DEBUG is set.
Without this change, print_hex_dump(KERN_DEBUG) is used even if CONFIG_DYNAMIC_DEBUG is set, and so the end user cannot benefit from Dynamic Debug even it's enabled.
And all the messages sen to to rpmsg are logged into the journal without an easy way to disable this (the only way is to change the logging level for the whole kernel !!!!). Even when Dynamic Debu is enabled and available.
See support case 00636789