From: Alexander Stein <alexander.stein@ew.tq-group.com>
Date: Thu, 26 Mar 2026 13:02:22 +0000 (+0100)
Subject: arm64: dts: imx8qm-tqma8qm-mba8x: Disable Cortex-A72 cluster
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=5d20f1ccb3393a2ccb3f3505891066ddff39167a;p=thirdparty%2Flinux.git

arm64: dts: imx8qm-tqma8qm-mba8x: Disable Cortex-A72 cluster

Due to missing workaround for "ERR050104: Arm/A53: Cache coherency issue"
disable the whole Cortex-A72 cluster.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
index bf972010a88e..ab3b244b684f 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
@@ -298,45 +298,6 @@
 				};
 			};
 		};
-
-		cpu1-thermal {
-			trips {
-				soc_active1_0: trip-active0 {
-					temperature = <40000>;
-					hysteresis = <5000>;
-					type = "active";
-				};
-
-				soc_active1_1: trip-active1 {
-					temperature = <48000>;
-					hysteresis = <3000>;
-					type = "active";
-				};
-
-				soc_active1_2: trip-active2 {
-					temperature = <60000>;
-					hysteresis = <10000>;
-					type = "active";
-				};
-			};
-
-			cooling-maps {
-				map1 {
-					trip = <&soc_active1_0>;
-					cooling-device = <&fan0 1 1>;
-				};
-
-				map2 {
-					trip = <&soc_active1_1>;
-					cooling-device = <&fan0 2 2>;
-				};
-
-				map3 {
-					trip = <&soc_active1_2>;
-					cooling-device = <&fan0 3 3>;
-				};
-			};
-		};
 	};
 };
 
diff --git a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi
index d94605c99991..f0e398eb2aad 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi
@@ -15,6 +15,13 @@
 	model = "TQ-Systems i.MX8QM TQMa8QM";
 	compatible = "tq,imx8qm-tqma8qm", "fsl,imx8qm";
 
+	/* Due to missing workaround for ERR050104 */
+	cpus {
+		/delete-node/ cpu-map;
+		/delete-node/ cpu@100;
+		/delete-node/ cpu@101;
+	};
+
 	memory@80000000 {
 		device_type = "memory";
 		/*
@@ -174,6 +181,8 @@
 };
 
 &thermal_zones {
+	/delete-node/ cpu1-thermal;
+
 	pmic0-thermal {
 		polling-delay-passive = <250>;
 		polling-delay = <2000>;
@@ -199,9 +208,7 @@
 					<&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 					<&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 					<&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-					<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-					<&A72_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-					<&A72_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
 			};
 		};
 	};