I'm thinking about installing openwrt to emmc (prefered but only 200MB storage after install?) or nand and use emmc as additional storage what would you recommend?
If I install it on emmc I don't want to leave an old installation on nand behind, can I just clear nand after successful install?
What's the best way to make use of the 8GB on the emmc?
Whats the max root-fs size I can use for emmc to still have sysupgrade to work? (as it's tempfs/in-ram I suspect below 2GB?)
What are the minimum required packages to add to the image to be able to mount ext4 or fat32 USB? (currently: block-mount e2fsprogs kmod-fs-ext4 kmod-usb-storage kmod-usb2 kmod-usb3 usbutils)
I found mmc / mmcinfo which gives me access to the emmc:
Device: mmc@11230000
Manufacturer ID: 11
OEM: 0
Name: 008GB0
Bus Speed: 52000000
Mode: MMC High Speed (52MHz)
Rd Block Len: 512
MMC version 5.1
High Capacity: Yes
Capacity: 7.3 GiB
Bus Width: 8-bit
Erase Group Size: 512 KiB
HC WP Group Size: 4 MiB
User Capacity: 7.3 GiB WRREL
Boot Capacity: 4 MiB ENH
RPMB Capacity: 4 MiB ENH
Boot area 0 is not write protected
Boot area 1 is not write protected
but unsure how to use the mmc erase with "blk# cnt" - I think I found the solution: