Greetings,
I'm working on converting IMX6 based Gateworks Ventana board support to DM which requires me to put many dtb's (36 currently!) into a FIT image. The size of the FIT image has grown to 2MiB more than 2x the size of u-boot-notdtb.bin so I want to use compression.
It appears that MULTI_DTB_FIT_GZIP compresses the entire FIT image. In my case fit-dtb.blob is 1.4MiB and fit-dtb.blob.gz compresses to 289KiB which is good. There's no way I'll be able to use SPL_MULTI_DTB_FIT with all those dtbs while supporting imx6s/dl with only 128K of SRAM so I'm using the U-Boot flavor of MULTI DTB (SPL_LOAD_FIT and MULTI_DTB_FIT).
I'm not clear exactly how to take advantage of fit-dtb.blob.gz as u-boot.img has the uncompressed fit image. I'm currently flashing u-boot-dtb.img to my board and its processing the FIT and booting properly but u-boot-dtb.img does not have a compressed FIT.
Is there some support missing for using MULTI_DTB_FIT_GZIP/LZO with a fit image in U-Boot vs the SPL?
Best regards,
Tim