https://wiki.banana-pi.org/Banana_Pi_BPI-R3

• mt7986a SoC
• mt7531 Ethernet-switch

• SD / eMMC sharing 1 mmc-controller in SoC
  • SD 4bit bus, eMMC 8bit
  • switched first 4 data-lanes by sw6 (bottom)
• SPI NAND/NOR sharing SPI0-Bus
  • CS switched by sw5

sw2 on top of board near debug-uart chooses between SPI and MMC

I have NOR not yet working,it is not recognized in uboot

gmac1----(p6)mt7531(P1-4)--LANx4
                     (P0)----WAN
                     (p5)---right SFP slot
gmac2----left SFP slot

https://forum.banana-pi.org/t/bpi-r3-information/12897/4

We have the sfp recognized but not completely working

mPCIe slot is usb-only with SIM connector (bottom of board). PCIe is mapped to m.2 key-m slot for nvme SSD

Sata possible via M.2 KEY-M 2lane interface on bottom side of board

gpio

32MB kernel/256MB root: gpt_sd-20220216.bin

create own partition table: (currently i try to port to python3,but get crc error, so only python2-support):

https://github.com/frank-w/BPI-R3-bsp/tree/r3-atf/tools/mediatek/gpt_editor

(cd tools/mediatek/gpt_editor/;python mtk_gpt.py --i example/mt7986-sd.json --o GPT_SD)

Created a gpt with 100mb kernel+6GB root partition with an python2 venv

https://github.com/frank-w/BPI-R3-bsp/blob/r3-atf/gpt_sdmmc_100m6g.img

U-Boot

Daniels code: https://github.com/dangowrt/arm-trusted-firmware/tree/mtksoc-v2.6/

https://git.openwrt.org/?p=openwrt/staging/dangole.git;a=shortlog;h=refs/heads/r3-mt7986

patches for mt7986

wifi firmware (wifi not yet tested)

Own repo: https://github.com/frank-w/BPI-R2-4.14/commits/5.19-r3

./build.sh importconfig
./build.sh #build kernel

Then copy bpi-r3.itb to card and start from uboot with commands listed above (setenv, fatload, bootm)

https://git.openwrt.org/?p=openwrt/staging/nbd.git;a=tree;f=target/linux/mediatek/patches-5.15;hb=HEAD

https://git.openwrt.org/?p=openwrt/staging/dangole.git;a=shortlog;h=refs/heads/r3-mt7986