Hi,
Just for the record: There actually is a non-A version of theThanks for sharing this. M28S is an engineering test board, and the official
RK3528, which I actually own (but forgot about - perhaps my subconscious
made me reply to this thread). It's on the Mango Pi M28K board [0][1][2] -
which, to my knowledge, is one of the first RK3528-based SBCs.
version was later renamed M28K. The MangoPi M28K board uses the RK3528A SoC.
As for the M28S board, the silkscreen of SoC is indeed RK3528. [1]
But then the interesting thing comes, uboot reports it is RK3528A:
U-Boot 2025.07-rc1-OpenWrt-r30114-9b777547be (Jun 18 2025 - 18:35:23 +0000)
Model: Generic RK3528
SoC: RK3528A
DRAM: 2 GiB
Core: 130 devices, 20 uclasses, devicetree: separate
MMC: mmc@ffbf0000: 0, mmc@ffc30000: 1
Loading Environment from nowhere... OK
In: serial@ff9f0000
Out: serial@ff9f0000
Err: serial@ff9f0000
Hit any key to stop autoboot: 0
[1] https://imgur.com/a/ddLsnmt
Thanks,
Chukun
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2.25.1