Linux kernel and device drivers for NXP i.MX platforms
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From: Alexander Stein <alexander.stein@ew.tq-group.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Peter Chen <peter.chen@kernel.org>,
	Pawel Laszczak <pawell@cadence.com>,
	Roger Quadros <rogerq@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	Magnus Damm <magnus.damm@gmail.com>, Marek Vasut <marex@denx.de>,
	Frank Li <Frank.Li@nxp.com>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-usb@vger.kernel.org, imx@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org, linux@ew.tq-group.com
Subject: [PATCH v2 5/5] arm64: dts: imx8qm-tqma8qm-mba8x: Disable Cortex-A72 cluster
Date: Wed, 11 Feb 2026 13:41:53 +0100	[thread overview]
Message-ID: <20260211124154.1080135-1-alexander.stein@ew.tq-group.com> (raw)
In-Reply-To: <20260211123436.1077513-1-alexander.stein@ew.tq-group.com>

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>
---
Changes in v2:
* None

 .../dts/freescale/imx8qm-tqma8qm-mba8x.dts    | 39 -------------------
 .../boot/dts/freescale/imx8qm-tqma8qm.dtsi    | 13 +++++--
 2 files changed, 10 insertions(+), 42 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
index ce5a4657c4230..25274cc76fc56 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm-mba8x.dts
@@ -297,45 +297,6 @@ map3 {
 				};
 			};
 		};
-
-		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 d94605c999915..f0e398eb2aad7 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 @@ &mu2_m0 {
 };
 
 &thermal_zones {
+	/delete-node/ cpu1-thermal;
+
 	pmic0-thermal {
 		polling-delay-passive = <250>;
 		polling-delay = <2000>;
@@ -199,9 +208,7 @@ map0 {
 					<&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>;
 			};
 		};
 	};
-- 
2.43.0


      parent reply	other threads:[~2026-02-11 12:43 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-11 12:34 [PATCH v2 0/5] Support TQMa8QM Alexander Stein
2026-02-11 12:34 ` [PATCH v2 1/5] dt-bindings: usb: cdns,usb3: support USB devices in DT Alexander Stein
2026-02-23 17:30   ` Rob Herring (Arm)
2026-02-24  2:39   ` Xu Yang
2026-02-11 12:34 ` [PATCH v2 2/5] arm64: dts: imx8qm-ss-hsio: Wire up DMA IRQ for PCIe Alexander Stein
2026-02-11 12:34 ` [PATCH v2 3/5] dt-bindings: arm: fsl: add bindings for TQMa8x Alexander Stein
2026-02-11 12:34 ` [PATCH v2 4/5] arm64: dts: freescale: add initial device tree " Alexander Stein
2026-02-11 12:43   ` Marc Kleine-Budde
2026-02-11 13:06     ` Alexander Stein
2026-02-11 12:41 ` Alexander Stein [this message]

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