[PATCH 1/4] arm64: dts: Reserve memory regions for hi6220

Leo Yan
2015-10-09T04:38:50Z

On Hi6220, below memory regions in DDR have specific purpose:

0x05e0,0000 - 0x05ef,ffff: For MCU firmware using at runtime;
0x06df,f000 - 0x06df,ffff: For mailbox message data;
0x0740,f000 - 0x0740,ffff: For MCU firmware's section;
0x3e00,0000 - 0x3fff,ffff: For OP-TEE.

This patch reserves these memory regions in DT.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index e36a539..e3f4cb3 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -7,9 +7,6 @@

/dts-v1/;

-/*Reserved 1MB memory for MCU*/
-/memreserve/ 0x05e00000 0x00100000;
-
#include "hi6220.dtsi"

/ {
@@ -24,8 +21,19 @@
stdout-path = "serial0:115200n8";
};

+ /*
+ * Reserve below regions from memory node:
+ *
+ * - 0x05e0,0000 - 0x05ef,ffff: MCU firmware runtime using
+ * - 0x06df,f000 - 0x06df,ffff: Mailbox message data
+ * - 0x0740,f000 - 0x0740,ffff: MCU firmware section
+ * - 0x3e00,0000 - 0x3fff,ffff: OP-TEE
+ */
memory@0 {
device_type = "memory";
- reg = <0x0 0x0 0x0 0x40000000>;
+ reg = <0x00000000 0x00000000 0x00000000 0x05e00000>,
+ <0x00000000 0x05f00000 0x00000000 0x00eff000>,
+ <0x00000000 0x06e00000 0x00000000 0x0060f000>,
+ <0x00000000 0x07410000 0x00000000 0x36bf0000>;
};
};
--
1.9.1