From: Nishanth Menon nm@ti.com
stable inclusion from stable-v5.10.94 commit 75919207c16a9164712cd3e31356216f4f8ef9ab bugzilla: https://gitee.com/openeuler/kernel/issues/I531X9
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit e9ba3a5bc6fdc2c796c69fdaf5ed6c9957cf9f9d ]
A72's L2 cache[1] on J721e[2] is 1MB. A72's L2 is fixed line length of 64 bytes and 16-way set-associative cache structure.
1MB of L2 / 64 (line length) = 16384 ways 16384 ways / 16 = 1024 sets
Fix the l2 cache-sets.
[1] https://developer.arm.com/documentation/100095/0003/Level-2-Memory-System/Ab... [2] http://www.ti.com/lit/pdf/spruil1
Fixes: 2d87061e70de ("arm64: dts: ti: Add Support for J721E SoC") Reported-by: Peng Fan peng.fan@nxp.com Signed-off-by: Nishanth Menon nm@ti.com Reviewed-by: Pratyush Yadav p.yadav@ti.com Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Link: https://lore.kernel.org/r/20211113043639.4413-1-nm@ti.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- arch/arm64/boot/dts/ti/k3-j721e.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/ti/k3-j721e.dtsi b/arch/arm64/boot/dts/ti/k3-j721e.dtsi index d1ef9fbe4981..a199227327ed 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721e.dtsi @@ -85,7 +85,7 @@ cache-level = <2>; cache-size = <0x100000>; cache-line-size = <64>; - cache-sets = <2048>; + cache-sets = <1024>; next-level-cache = <&msmc_l3>; };