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authorAnson Huang <Anson.Huang@freescale.com>2015-11-10 19:05:02 +0800
committerAnson Huang <Anson.Huang@freescale.com>2015-11-10 19:24:38 +0800
commitae8a22baa6e70cc74407083b79f281150fe5b1ca (patch)
tree6c3ea2403a722e7c94ee537e103e975d97176db3 /arch
parent3952fc0cb388cd05a89ed67e8f6f15b0d68347b3 (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')
-rw-r--r--arch/arm/boot/dts/imx6sx-sabreauto-m4.dts5
-rw-r--r--arch/arm/boot/dts/imx6sx-sdb-m4.dts4
2 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts b/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts
index 2ad2b6a8e964..b720278b0bd5 100644
--- a/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts
+++ b/arch/arm/boot/dts/imx6sx-sabreauto-m4.dts
@@ -10,8 +10,9 @@
/{
memory {
- linux,usable-memory = <0x80000000 0x3ff00000>;
- reg = <0x80000000 0x40000000>;
+ linux,usable-memory = <0x80000000 0x1ff00000>,
+ <0xa0000000 0x1ff00000>,
+ <0xc0000000 0x40000000>;
};
};
diff --git a/arch/arm/boot/dts/imx6sx-sdb-m4.dts b/arch/arm/boot/dts/imx6sx-sdb-m4.dts
index f3958be67688..a5d4bcf63885 100644
--- a/arch/arm/boot/dts/imx6sx-sdb-m4.dts
+++ b/arch/arm/boot/dts/imx6sx-sdb-m4.dts
@@ -10,8 +10,8 @@
/{
memory {
- linux,usable-memory = <0x80000000 0x3ff00000>;
- reg = <0x80000000 0x40000000>;
+ linux,usable-memory = <0x80000000 0x1ff00000>,
+ <0xa0000000 0x1ff00000>;
};
};