Re: [PATCH v2] arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM

[Neil Armstrong]

Hi,

On Thu, 19 Mar 2026 10:34:46 +0800, Nick Xie wrote:
> The Khadas VIM4 features 8GB of LPDDR4X RAM. The previous memory node
> mapped a single incorrect region. This caused the kernel to map MMIO
> and secure firmware (ATF/TrustZone) memory holes as standard RAM,
> leading to an Asynchronous SError Interrupt during early boot
> (paging_init) when the kernel attempted to clear those pages.
> 
> Fix this by splitting the 8GB memory layout into three separate
> regions to properly avoid the memory holes (e.g., 0xe0000000 -
> 0xffffffff):
> - 3.5GB @ 0x000000000
> - 3.5GB @ 0x100000000
> - 1.0GB @ 0x200000000
> 
> [...]

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (v7.1/arm64-dt)

[1/1] arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM
      https://git.kernel.org/amlogic/c/4b3917cd8492d72e576b837f78c0c398bda4ec27

These changes has been applied on the intermediate git tree [1].

The v7.1/arm64-dt branch will then be sent via a formal Pull Request to the Linux SoC maintainers
for inclusion in their intermediate git branches in order to be sent to Linus during
the next merge window, or sooner if it's a set of fixes.

In the cases of fixes, those will be merged in the current release candidate
kernel and as soon they appear on the Linux master branch they will be
backported to the previous Stable and Long-Stable kernels [2].

The intermediate git branches are merged daily in the linux-next tree [3],
people are encouraged testing these pre-release kernels and report issues on the
relevant mailing-lists.

If problems are discovered on those changes, please submit a signed-off-by revert
patch followed by a corrective changeset.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

-- 
Neil