From: Yang Xiwen <forbidden405@xxxxxxxxxxx>
During boot, the kernel complains:
[ 0.044029] cacheinfo: Unable to detect cache hierarchy for CPU 0
So add L1/L2 cache info to the dts according to the datasheet. (32KiB L1
i-cache + 32 KiB L1 d-cache + 512 KiB L2 unified cache)
With this patch, the line above is gone and the following info is added
to the output of `lscpu`:
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 128 KiB (4 instances)
L2: 512 KiB (1 instance)
Fixes: 2f20182ed670 ("arm64: dts: hisilicon: add dts files for hi3798cv200-poplar board")
Signed-off-by: Yang Xiwen <forbidden405@xxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi | 37 ++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi b/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi
index fc64d2fa99eb..f6bc001c3832 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi3798cv200.dtsi
@@ -31,6 +31,13 @@ cpu@0 {
device_type = "cpu";
reg = <0x0 0x0>;
enable-method = "psci";
+ d-cache-size = <0x8000>; /* 32 KiB */
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ i-cache-size = <0x8000>; /* 32 KiB */
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ next-level-cache = <&L2>;
};
cpu@1 {
@@ -38,6 +45,13 @@ cpu@1 {
device_type = "cpu";
reg = <0x0 0x1>;
enable-method = "psci";
+ d-cache-size = <0x8000>; /* 32 KiB */
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ i-cache-size = <0x8000>; /* 32 KiB */
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ next-level-cache = <&L2>;
};
cpu@2 {
@@ -45,6 +59,13 @@ cpu@2 {
device_type = "cpu";
reg = <0x0 0x2>;
enable-method = "psci";
+ d-cache-size = <0x8000>; /* 32 KiB */
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ i-cache-size = <0x8000>; /* 32 KiB */
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ next-level-cache = <&L2>;
};
cpu@3 {
@@ -52,9 +73,25 @@ cpu@3 {
device_type = "cpu";
reg = <0x0 0x3>;
enable-method = "psci";
+ d-cache-size = <0x8000>; /* 32 KiB */
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ i-cache-size = <0x8000>; /* 32 KiB */
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ next-level-cache = <&L2>;
};
};
+ L2: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-size = <0x80000>; /* 512 KiB */
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-level = <2>;
+ };
+
gic: interrupt-controller@f1001000 {
compatible = "arm,gic-400";
reg = <0x0 0xf1001000 0x0 0x1000>, /* GICD */
--
2.43.0
