karo: tx53: improve workaround for i.MX53 ROM code bug Due to the alignment of the rel_dyn section to 4KiB has the ill side effect of interpreting uninitialized data from RAM during relocation when U-Boot is loaded via network. This may crash U-Boot after displaying the message 'DRAM: ...'. Create a dummy section placed after the rel_dyn section to provide the image size alignment without affecting the size of the rel_dyn partition.
MX28: DMA: make the DMA timeout configurable Use the default value from commit 1375f044d96f "MX28: DMA: Prolong the DMA timeout", but let users change it depending on the amount of data to be transferred and the expected data rate.
karo: tx28: change default loadaddr for TX28S TX28S has only 64MiB SDRAM. With the default loadaddr of 0x43000000 there is only ~8MiB space between ${loadaddr} and the start of U-Boot in memory. Reduce the loadaddr to leave more space for downloads without overwriting U-Boot code.