On Hi6220, below memory regions in DDR have specific purpose:
- 0x05e0,0000 - 0x05ef,ffff: For MCU firmware using at runtime;
- 0x0740,f000 - 0x0740,ffff: For MCU firmware's section;
- 0x06df,f000 - 0x06df,ffff: For mailbox message data.
This patch reserves these memory regions and add device node for
mailbox in dts.
Signed-off-by: Leo Yan <leo....@linaro.org>
---
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 20 +++++++++++++++++---
arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 8 ++++++++
2 files changed, 25 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index e36a539..1715f9d 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"
/ {
@@ -28,4 +25,21 @@
device_type = "memory";
reg = <0x0 0x0 0x0 0x40000000>;
};
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ mcu-buf@05e00000 {
+ no-map;
+ reg = <0x0 0x0740f000 0x0 0x00001000>, /* MCU firmware
section */
+ <0x0 0x05e00000 0x0 0x00100000>; /* MCU firmware
buffer */
+ };
+
+ mbox-buf@06dff000 {
+ no-map;
+ reg = <0x0 0x06dff000 0x0 0x00001000>; /* Mailbox
message buf */
+ };
+ };
};
diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
index 3f03380..b42a9b7 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
@@ -167,5 +167,13 @@
clocks = <&ao_ctrl 36>, <&ao_ctrl 36>;
clock-names = "uartclk", "apb_pclk";
};
+
+ mailbox: mailbox {
+ #mbox-cells = <1>;
+ compatible = "hisilicon,hi6220-mbox";
+ reg = <0x0 0xf7510000 0x0 0x1000>, /* IPC_S */
+ <0x0 0x06dff800 0x0 0x0800>; /* Mailbox buffer */
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+ };
};
};
--
1.9.1
--
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