In the "i.MX 8M Plus Applications Processor Reference Manual, Rev. 1, 06/2021" I read the chapter "3.2 Resource Domain Controller (RDC)" and I see the reset value for the several RDC_PDAPxxx registers.
On my evaluation board, if I halt the boot inside U-Boot, I see that 3 RDC_PDAPxxx registers have values different from the reset/default value:
Can someone explain where in the U-Boot sources (https://github.com/nxp-imx/uboot-imx) I can see the section responsible for these settings.
And, moreover, why they're necessary.
In my usage scenario I would like using UART2 from Cortex-M (domain 1), but it doesn't seem possible without patching the default U-Boot from NXP.
But I prefer not to going on with these, because I see it as a difficult job, with possible heavy consequences in case of mistakes.
Solved! Go to Solution.