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From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
To:     matthias.bgg@gmail.com
Cc:     robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        nfraprado@collabora.com, kernel@collabora.com,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
Subject: [PATCH 1/5] arm64: dts: mt8195: Add complete CPU caches information
Date:   Tue,  6 Dec 2022 12:23:26 +0100
Message-Id: <20221206112330.78431-2-angelogioacchino.delregno@collabora.com>
In-Reply-To: <20221206112330.78431-1-angelogioacchino.delregno@collabora.com>
References: <20221206112330.78431-1-angelogioacchino.delregno@collabora.com>
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This SoC features two clusters composed of:
 - 4x Cortex A55: 32KB I-cache and 32KB D-cache, 4-way set associative,
                  per-cpu 128KB L2 cache, 4-way set associative;
 - 4x Cortex A78: 64KB I-cache and 64KB D-cache, 4-way set associative,
                  per-cpu 256KB L2 cache, 8-way set associative;
Moreover, the two clusters are sharing a DSU L3 cache with size 2MB,
16-way set associative.

With that in mind, add the appropriate properties needed to specify the
caches information for this SoC, which will now be correctly exported
to sysfs.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 58 ++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 5d31536f4c48..539c49324d64 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -39,6 +39,12 @@ cpu0: cpu@0 {
 			clock-frequency = <1701000000>;
 			capacity-dmips-mhz = <308>;
 			cpu-idle-states = <&cpu_off_l &cluster_off_l>;
+			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_0>;
 			#cooling-cells = <2>;
 		};
@@ -52,6 +58,12 @@ cpu1: cpu@100 {
 			clock-frequency = <1701000000>;
 			capacity-dmips-mhz = <308>;
 			cpu-idle-states = <&cpu_off_l &cluster_off_l>;
+			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_0>;
 			#cooling-cells = <2>;
 		};
@@ -65,6 +77,12 @@ cpu2: cpu@200 {
 			clock-frequency = <1701000000>;
 			capacity-dmips-mhz = <308>;
 			cpu-idle-states = <&cpu_off_l &cluster_off_l>;
+			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_0>;
 			#cooling-cells = <2>;
 		};
@@ -78,6 +96,12 @@ cpu3: cpu@300 {
 			clock-frequency = <1701000000>;
 			capacity-dmips-mhz = <308>;
 			cpu-idle-states = <&cpu_off_l &cluster_off_l>;
+			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_0>;
 			#cooling-cells = <2>;
 		};
@@ -91,6 +115,12 @@ cpu4: cpu@400 {
 			clock-frequency = <2171000000>;
 			capacity-dmips-mhz = <1024>;
 			cpu-idle-states = <&cpu_off_b &cluster_off_b>;
+			i-cache-size = <65536>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <65536>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
 			next-level-cache = <&l2_1>;
 			#cooling-cells = <2>;
 		};
@@ -104,6 +134,12 @@ cpu5: cpu@500 {
 			clock-frequency = <2171000000>;
 			capacity-dmips-mhz = <1024>;
 			cpu-idle-states = <&cpu_off_b &cluster_off_b>;
+			i-cache-size = <65536>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <65536>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
 			next-level-cache = <&l2_1>;
 			#cooling-cells = <2>;
 		};
@@ -117,6 +153,12 @@ cpu6: cpu@600 {
 			clock-frequency = <2171000000>;
 			capacity-dmips-mhz = <1024>;
 			cpu-idle-states = <&cpu_off_b &cluster_off_b>;
+			i-cache-size = <65536>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <65536>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
 			next-level-cache = <&l2_1>;
 			#cooling-cells = <2>;
 		};
@@ -130,6 +172,12 @@ cpu7: cpu@700 {
 			clock-frequency = <2171000000>;
 			capacity-dmips-mhz = <1024>;
 			cpu-idle-states = <&cpu_off_b &cluster_off_b>;
+			i-cache-size = <65536>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <65536>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
 			next-level-cache = <&l2_1>;
 			#cooling-cells = <2>;
 		};
@@ -215,18 +263,28 @@ cluster_off_b: cluster-off-b {
 		l2_0: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-size = <131072>;
+			cache-line-size = <64>;
+			cache-sets = <512>;
 			next-level-cache = <&l3_0>;
 		};
 
 		l2_1: l2-cache1 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-size = <262144>;
+			cache-line-size = <64>;
+			cache-sets = <512>;
 			next-level-cache = <&l3_0>;
 		};
 
 		l3_0: l3-cache {
 			compatible = "cache";
 			cache-level = <3>;
+			cache-size = <2097152>;
+			cache-line-size = <64>;
+			cache-sets = <2048>;
+			cache-unified;
 		};
 	};
 
-- 
2.38.1