linux-kernel - Support for Rock PI-4b

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Message-ID: <CAFgf54oYjUEg9KkQUzneYTZH1Z8cX56va5M0853eWPFaYT+Z2A@mail.gmail.com>
Date: Fri, 26 Sep 2025 15:07:00 +0100
From: Mostafa Saleh <smostafa@...gle.com>
To: devicetree@...r.kernel.org, 
	"moderated list:ARM SMMU DRIVERS" <linux-arm-kernel@...ts.infradead.org>, linux-rockchip@...ts.infradead.org, 
	open list <linux-kernel@...r.kernel.org>
Cc: Rob Herring <robh@...nel.org>, krzk+dt@...nel.org, conor+dt@...nel.org, 
	Heiko Stuebner <heiko@...ech.de>
Subject: Support for Rock PI-4b

Hi,

I am trying to run Linux[1] on my Rock PI-4b, which I see is supported in
the kernel in “rk3399-rock-pi-4b.dts”.

However, compiling “defconfig” (ARM64) and flashing my Image doesn’t
work,
It just hangs before any console (even with earlycon), I tried to also use
some of the vendor configs with no luck.
I did some research and found that [2], which indicates that the upstream
support has been broken for some years?

Has anyone tried to flash a recent kernel successfully on it? or any
tips are greatly appreciated.
Otherwise, maybe it can be removed to avoid misleading other developers
(I got this board to do some upstream kernel development on)

[1] base: 4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4
[2] https://wiki.radxa.com/Rockpi4/dev/kernel-mainline

Thanks,
Mostafa