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Message-ID: <20211113043639.4413-1-nm@ti.com>
Date: Fri, 12 Nov 2021 22:36:39 -0600
From: Nishanth Menon <nm@...com>
To: Rob Herring <robh+dt@...nel.org>, Tero Kristo <kristo@...nel.org>,
Vignesh Raghavendra <vigneshr@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, Nishanth Menon <nm@...com>,
<linux-omap@...r.kernel.org>, Peng Fan <peng.fan@....com>
Subject: [PATCH] arm64: dts: ti: k3-j721e: Fix the L2 cache sets
A72's L2 cache[1] on J721e[2] is 1MB. A53'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/About-the-L2-memory-system
[2] http://www.ti.com/lit/pdf/spruil1
Fixes: 2d87061e70de ("arm64: dts: ti: Add Support for J721E SoC")
Reported-by: Peng Fan <peng.fan@....com>
Signed-off-by: Nishanth Menon <nm@...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 214359e7288b..0f674bc8f1c7 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e.dtsi
@@ -88,7 +88,7 @@ L2_0: l2-cache0 {
cache-level = <2>;
cache-size = <0x100000>;
cache-line-size = <64>;
- cache-sets = <2048>;
+ cache-sets = <1024>;
next-level-cache = <&msmc_l3>;
};
--
2.32.0
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