Buffalo LinkStation LS421DE is a dual bay NAS, based on Marvell Armada 370
Hardware:
SoC: Marvell Armada 88F6707-A1
CPU: Cortex-A9 1200 MHz, 1 core
Flash: SPI-NOR 1 MiB, NAND 512 MiB
RAM: DDR3 512 MiB
Ethernet: 1x 10/100/1000 Mbps
USB: 1x 2.0, 1x 3.0
SATA: 2x 3.0 Gbps
LEDs/Input : 5x / 2x (1x button, 1x slide-switch)
RTC: Ricoh RS5C372A, I2C, no battery
Flash instruction (UART+TFTP):
1. Downgrade the OEM firmware to 1.34 version (BUFFALO_BOOTVER=0.13)
2. Remove any hard drive from inside the bays.
3. Boot the Openwrt initramfs image using the U-Boot serial console:
tftpboot 0x1200000 buffalo_ls421de-initramfs-kernel.bin
bootm 0x1200000
4. Flash the sysupgrade image using the Openwrt console:
sysupgrade -n buffalo_ls421de-squashfs-sysupgrade.bin
5. Wait until it finish, the device will reboot with Openwrt installed
on the NAND flash.
Note:
- Device shuting down doesn't work, even if the power slide switch is
used. We must first, via MDIO, set the unused LED2 at the ethernet
phy0 to off state. Reboot works ok.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Reviewed-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This adds initial support for micro-DPU (uDPU) board which is based on
Armada-3720 SoC. micro-DPU is the single-port FTTdp distribution point
unit made by Methode Electronics which offers complete modularity with
replaceable SFP modules both for uplink and downlink (G.hn over
twisted-pair, G.hn over coax, 1G and 2.5G Ethernet over Cat-5e cable).
On-board features:
- 512 MiB DDR3
- 2 x 2.5G SFP via HSGMII SERDES interface to the A3720 SoC
- USB 2.0 Type-C connector
- 4GB eMMC
- ETSI TS 101548 reverse powering via twisted pair (RJ45) or coax (F Type)
uDPU is intented to run on kernel 4.19 on newer due to the SFP and hardware support.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>
[added sfp related patches from Russell King]
Signed-off-by: Marek Behún <marek.behun@nic.cz>
[rebase; rework patches; separate and cleanup kernel configs;
add espessobin dts; adjust venom dts]
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Daniel González Cabanelas
Vladimir Vid
Marko Ratkaj