diff options
| author | Anson Huang <Anson.Huang@freescale.com> | 2015-11-10 19:12:55 +0800 |
|---|---|---|
| committer | Anson Huang <Anson.Huang@freescale.com> | 2015-11-10 19:24:58 +0800 |
| commit | 104aa819416b0fa3cbb2da7572930248a365c405 (patch) | |
| tree | 20b72ff975f7d9de57cce642567102c07c22dcbc | |
| parent | ae8a22baa6e70cc74407083b79f281150fe5b1ca (diff) | |
MLK-11844-2 ARM: dts: imx7d: 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>
| -rw-r--r-- | arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-m4.dts | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx7d-sdb-m4.dts | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-m4.dts b/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-m4.dts index 75835b4422b5..6dc4de0d8c83 100644 --- a/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-m4.dts +++ b/arch/arm/boot/dts/imx7d-12x12-lpddr3-arm2-m4.dts @@ -3,7 +3,9 @@ / { memory { - linux,usable-memory = <0x80000000 0x3ff00000>; + linux,usable-memory = <0x80000000 0x1ff00000>, + <0xa0000000 0x1ff00000>, + <0xc0000000 0x40000000>; }; gpio-keys { diff --git a/arch/arm/boot/dts/imx7d-sdb-m4.dts b/arch/arm/boot/dts/imx7d-sdb-m4.dts index 41b8c0e92bab..63abf3f3ea2f 100644 --- a/arch/arm/boot/dts/imx7d-sdb-m4.dts +++ b/arch/arm/boot/dts/imx7d-sdb-m4.dts @@ -10,8 +10,8 @@ / { memory { - linux,usable-memory = <0x80000000 0x3ff00000>; - reg = <0x80000000 0x80000000>; + linux,usable-memory = <0x80000000 0x1ff00000>, + <0xa0000000 0x1ff00000>; }; m4_tcm: tcml@007f8000 { |