Add support to hikey dts for the syscon-reboot-mode driver.
After trying an approach using a sram driver and node, a number
of issues cropped up which would make it so we would be
duplicating a lot of extra syscon infrastructure in order to
support mfds on sram. After talking with Bjorn, using the
syscon driver for this seems like an better choice.
Cc: Andy Yan <andy.yan@xxxxxxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Haojian Zhuang <haojian.zhuang@xxxxxxxxxx>
Cc: Guodong Xu <guodong.xu@xxxxxxxxxx>
Cc: Wei Xu <xuwei5@xxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index 8597e9b..b2683e4 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -29,6 +29,7 @@
* Reserve below regions from memory node:
*
* 0x05e0,0000 - 0x05ef,ffff: MCU firmware runtime using
+ * 0x05f0,1000 - 0x05f0,1fff: Reboot reason
* 0x06df,f000 - 0x06df,ffff: Mailbox message data
* 0x0740,f000 - 0x0740,ffff: MCU firmware section
* 0x3e00,0000 - 0x3fff,ffff: OP-TEE
@@ -36,11 +37,26 @@
memory@0 {
device_type = "memory";
reg = <0x00000000 0x00000000 0x00000000 0x05e00000>,
- <0x00000000 0x05f00000 0x00000000 0x00eff000>,
+ <0x00000000 0x05f00000 0x00000000 0x00001000>,
+ <0x00000000 0x05f02000 0x00000000 0x00efd000>,
<0x00000000 0x06e00000 0x00000000 0x0060f000>,
<0x00000000 0x07410000 0x00000000 0x36bf0000>;
};
+ reboot-mode-syscon@5f01000 {
+ compatible = "syscon", "simple-mfd";
+ reg = <0x0 0x05f01000 0x0 0x00001000>;
+
+ reboot-mode@0 {
+ compatible = "syscon-reboot-mode";
+ offset = <0x0>;
+
+ mode-normal = <0x77665501>;
+ mode-bootloader = <0x77665500>;
+ mode-recovery = <0x77665502>;
+ };
+ };
+
soc {
spi0: spi@f7106000 {
status = "ok";
--
1.9.1
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