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Date:   Mon, 11 Jan 2021 17:32:53 -0800
From:   Danny Lin <danny@...ag0n.dev>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Danny Lin <danny@...ag0n.dev>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] arm64: dts: qcom: sm8250: Define CPU topology

sm8250 has a big.LITTLE CPU setup with DynamIQ, so all cores are within
the same CPU cluster and LLC (Last-Level Cache) domain. Define this
topology to help the scheduler make decisions.

Signed-off-by: Danny Lin <danny@...ag0n.dev>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 36 ++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index 65acd1f381eb..30ccadb753a5 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -199,6 +199,42 @@ L2_700: l2-cache {
 				next-level-cache = <&L3_0>;
 			};
 		};
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&CPU0>;
+				};
+
+				core1 {
+					cpu = <&CPU1>;
+				};
+
+				core2 {
+					cpu = <&CPU2>;
+				};
+
+				core3 {
+					cpu = <&CPU3>;
+				};
+
+				core4 {
+					cpu = <&CPU4>;
+				};
+
+				core5 {
+					cpu = <&CPU5>;
+				};
+
+				core6 {
+					cpu = <&CPU6>;
+				};
+
+				core7 {
+					cpu = <&CPU7>;
+				};
+			};
+		};
 	};
 
 	firmware {
-- 
2.29.2

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