diff options
| author | Nick Xie <nick@khadas.com> | 2026-03-19 05:34:46 +0300 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2026-04-21 16:46:22 +0300 |
| commit | 124d5e138ab5629118ebc30a59139d5498e6ee4c (patch) | |
| tree | e6915898429e12a29d340ad036431dd0ca455d91 | |
| parent | 5ecee47dc9fc5959c04826a227135a03bc0d0267 (diff) | |
| download | linux-124d5e138ab5629118ebc30a59139d5498e6ee4c.tar.xz | |
arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM
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
Signed-off-by: Nick Xie <nick@khadas.com>
Suggested-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260319023446.3422695-1-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts index fffdab96b12e..e7aff6236692 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts @@ -17,7 +17,9 @@ memory@0 { device_type = "memory"; - reg = <0x0 0x0 0x2 0x0>; /* 8 GB */ + reg = <0x0 0x0 0x0 0xE0000000 + 0x1 0x0 0x0 0xE0000000 + 0x2 0x0 0x0 0x40000000>; /* 8 GB */ }; reserved-memory { |