diff options
| author | Peng Fan <peng.fan@nxp.com> | 2020-12-01 15:30:47 +0800 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-12-01 16:07:45 +0800 |
| commit | 84b86a513c34a7ec65500ca19e34d7d3d3219d48 (patch) | |
| tree | c101bbe160b63efd10576212fe0aedd03bde9945 | |
| parent | 985c60e55694a69effd2197f798cb039a17144c6 (diff) | |
MLK-25073 arm64: dts: imx8mn-ddr3l-evk-rpmsg: reserve space for Mcore
This is just a workaround for Linux 5.4 Q4 release
to avoid Linux use the memory.
This board only has 1GB memory, the 0xb8000000
exceeds the DRAM, and round back to 0x78000000,
since we not modify Mcore image, so we need to avoid
Linux touch 0x78000000 which might crash the system
and mark mcore ddr demo broken and only support booting mcore image
from U-Boot bootaux.
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn-ddr3l-evk-rpmsg.dts | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr3l-evk-rpmsg.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr3l-evk-rpmsg.dts index b3c1af0c76e4..55b690b01455 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-ddr3l-evk-rpmsg.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr3l-evk-rpmsg.dts @@ -32,6 +32,29 @@ reg = <0 0xb8400000 0 0x100000>; no-map; }; + + /* + * The following three is just a workaround + * to avoid Linux use the memory. + * This board only has 1GB memory, the 0xb8000000 + * exceeds the DRAM, and round back to 0x78000000, + * since we not modify Mcore image, so we need to avoid + * Linux touch 0x78000000 and mark Mcore ddr demo broken. + */ + vdev0vring0@78000000 { + reg = <0 0x78000000 0 0x8000>; + no-map; + }; + + vdev0vring1@78008000 { + reg = <0 0x78008000 0 0x8000>; + no-map; + }; + + vdevbuffer@78400000 { + reg = <0 0x78400000 0 0x100000>; + no-map; + }; }; sound-wm8524 { |