boards: imx93_evk: Document imx-atf TRDC config for M33 DDR access #98757
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Add documentation for required imx-atf TRDC configuration changes to enable M33 core DDR memory access on i.MX93 EVK board. Signed-off-by: Ruoshan Shi <[email protected]>
zephyrbot
requested review from
JiafeiPan,
Zhiqiang-Hou,
dbaluta,
dleach02,
iuliana-prodan and
yangbolu1991
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While working on the display module for the i.MX93 EVK, I found that the readme was not very clear. I have updated it to clarify the specific changes related to TRDC in the DDR target. I would appreciate your comments. |
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| https://github.com/nxp-imx/imx-atf | ||
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| imx-atf changes: |
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@RuoshanShi, does this change apply to real-time edge u-boot or simple (linux-nxp) u-boot?
Also, which Linux and U-Boot versions did you use for testing?
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@RuoshanShi, does this change apply to real-time edge u-boot or simple (linux-nxp) u-boot? Also, which Linux and U-Boot versions did you use for testing?
@iuliana-prodan I’m using the latest release of NXP’s file system. Since I’m working with the M33 core, I haven’t focused on the Linux system usage.
We need to make changes in the imx-atf repository and then compile it to generate bl31.bin. After that, copy bl31.bin to the imx-mkimg/iMX93 directory to build flash.bin. Then use uuu -b sd flash.bin to flash it onto the board.
In U-Boot, I use the following command to load the binary:
load mmc 1:1 0x84000000 zephyr.bin; dcache flush; bootaux 0x84000000 0
I noticed that the previous DDR target description only mentioned modifying plat/imx/imx93/trdc_config.h, so I added more detailed descriptions accordingly.
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Add documentation for required imx-atf TRDC configuration changes to enable M33 core DDR memory access on i.MX93 EVK board.