diff options
| author | Anson Huang <Anson.Huang@freescale.com> | 2015-11-10 19:05:02 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@nxp.com> | 2016-01-14 11:02:20 -0600 |
| commit | c1acc01a4452d6a663397337146c578621f222e9 (patch) | |
| tree | 82bd56a1e05323e2b811dd9b2e5bf32e118511c9 /arch/arm/boot/dts/imx6sx-sabreauto-m4.dts | |
| parent | 2366f03f30d20e6a8966008ca8589f1818fb49e8 (diff) | |
MLK-11844-1 ARM: dts: imx6sx: reserve DDR space for M4 use case
FreeRTOS/M4 has DDR use case, M4 can only execute on DDR
space lower than 0xa0000000, Linux kernel will reserve 1M
(0x9ff00000 - 0x9fffffff) for it, below are the DDR usage:
0x80000000 - 0x9fefffff: Linux kernel;
0x9ff00000 - 0x9fffffff: FreeRTOS;
0xa0000000 - 0xbfefffff: Linux kernel;
0xbff00000 - 0xbfffffff: RPMSG shared memory;
0xc0000000 - 0xffffffff: Linux kernel if boards has 2GB DDR.
Also, remove 'reg' property which is unused.
Signed-off-by: Anson Huang <Anson.Huang@freescale.com>
Diffstat (limited to 'arch/arm/boot/dts/imx6sx-sabreauto-m4.dts')
| -rw-r--r-- | arch/arm/boot/dts/imx6sx-sabreauto-m4.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts b/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts index 1273a287be37..159e90739255 100644 --- a/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts +++ b/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts @@ -8,6 +8,14 @@ #include "imx6sx-sabreauto.dts" +/{ + memory { + linux,usable-memory = <0x80000000 0x1ff00000>, + <0xa0000000 0x1ff00000>, + <0xc0000000 0x40000000>; + }; +}; + /* * The flollowing modules are conflicting with M4, disable them when m4 * is running. |