linux-kernel - [PATCH] arm64: dts: imx93: add cache info

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Message-Id: <20240801081111.1492688-1-peng.fan@oss.nxp.com>
Date: Thu,  1 Aug 2024 16:11:11 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de
Cc: kernel@...gutronix.de,
	festevam@...il.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	wahrenst@....net,
	Peng Fan <peng.fan@....com>
Subject: [PATCH] arm64: dts: imx93: add cache info

From: Peng Fan <peng.fan@....com>

i.MX93 features two Cortex-A55 cores with per core L1 Instruction
cache size 32KB, L1 data cache size 32KB, per core L2 cache 64KB, and
unified 256KB L3 cache.

Add the cache info to remove cacheinfo warnings at boot:
"cacheinfo: Unable to detect cache hierarchy for CPU 0"

Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/boot/dts/freescale/imx93.dtsi | 42 ++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 4a3f42355cb8..8f17b1fbfba0 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -69,6 +69,13 @@ A55_0: cpu@0 {
 			enable-method = "psci";
 			#cooling-cells = <2>;
 			cpu-idle-states = <&cpu_pd_wait>;
+			i-cache-size = <32768>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <128>;
+			next-level-cache = <&l2_cache_l0>;
 		};
 
 		A55_1: cpu@100 {
@@ -78,8 +85,43 @@ A55_1: cpu@100 {
 			enable-method = "psci";
 			#cooling-cells = <2>;
 			cpu-idle-states = <&cpu_pd_wait>;
+			i-cache-size = <32768>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <128>;
+			next-level-cache = <&l2_cache_l1>;
 		};
 
+		l2_cache_l0: l2-cache-l0 {
+			compatible = "cache";
+			cache-size = <65536>;
+			cache-line-size = <64>;
+			cache-sets = <256>;
+			cache-level = <2>;
+			cache-unified;
+			next-level-cache = <&l3_cache>;
+		};
+
+		l2_cache_l1: l2-cache-l1 {
+			compatible = "cache";
+			cache-size = <65536>;
+			cache-line-size = <64>;
+			cache-sets = <256>;
+			cache-level = <2>;
+			cache-unified;
+			next-level-cache = <&l3_cache>;
+		};
+
+		l3_cache: l3-cache {
+			compatible = "cache";
+			cache-size = <262144>;
+			cache-line-size = <64>;
+			cache-sets = <256>;
+			cache-level = <3>;
+			cache-unified;
+		};
 	};
 
 	osc_32k: clock-osc-32k {
-- 
2.37.1