From: Yang Xiwen forbidden405@outlook.com
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@outlook.com Cc: stable@vger.kernel.org --- 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 */