2024-04-11 00:44:50

by Inochi Amaoto

Subject: [PATCH] riscv: dts: sophgo: add reserved memory node for CV1800B

The original dts of CV1800B has a weird memory length as it
contains reserved memory for coprocessor. Make this area a
separate node so it can get the real memory length.

Signed-off-by: Inochi Amaoto <[email protected]>
---
arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts | 12 +++++++++---
arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 5 +++++
2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
index 3af9e34b3bc7..0b9128513357 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
+++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
@@ -23,9 +23,15 @@ chosen {
stdout-path = "serial0:115200n8";
};

- memory@80000000 {
- device_type = "memory";
- reg = <0x80000000 0x3f40000>;
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ coprocessor_rtos: region@83f40000 {
+ reg = <0x83f40000 0xc0000>;
+ no-map;
+ };
};
};

diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
index 165e9e320a8c..17ce8aa415a8 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
@@ -7,6 +7,11 @@

/ {
compatible = "sophgo,cv1800b";
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x80000000 0x4000000>;
+ };
};

&plic {
--
2.44.0

2024-04-23 08:40:37

by Inochi Amaoto

Subject: Re: [PATCH] riscv: dts: sophgo: add reserved memory node for CV1800B

On Thu, 11 Apr 2024 08:45:00 +0800, Inochi Amaoto wrote:
> The original dts of CV1800B has a weird memory length as it
> contains reserved memory for coprocessor. Make this area a
> separate node so it can get the real memory length.
>
>

Applied to sophgo/for-next, thanks!

[1/1] riscv: dts: sophgo: add reserved memory node for CV1800B
https://github.com/sophgo/linux/commit/1eba0b61be72506549e79dd11a132b5d73aed094

Thanks,
Inochi