bcm2711 options:

Notes for board-specific options:
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BS Options: All options are separated by colons

'bmstr_base'    : ram base address from busmaster view


Example:
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For raspberry pi4:

#SD
devb-sdmmc-bcm2711 cam pnp,verbose blk rw,cache=2M dos umask=077 mem name=below1G sdio addr=0xfe340000,irq=158,bs=bmstr_base=0xc0000000 disk name=sd





