From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04378606A31A for ; Thu, 22 Oct 2026 08:50:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=JRDoj50A; dkim=fail reason="signature verification failed" (2048-bit key, unprotected) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.a=rsa-sha256 header.s=default2602 header.b=Fjvp4tRY DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=YAcKsa+N22qMYtLETYzF0/wBbwZ/VrpjV+7wi9PY8jc=; b=JRDoj50AuFrvy8ovfFivi+EK+F /NPYRUgPQ+6dSC3DGjnVBhN4XcHfs2kw7QAIWBpIyWycanQ6TeJD1SWewKcJC0vsnmbHgL4OxC+Ky rs1HMvfU3gETTF8NyHfTtNEfakM7BauBzH0gf2ElahMIMLLweHa1wUTR9X+iyPr/Y7K9QgLSbbjtk ahEqtcnnKoR5eqPCerWlJczNbQY2ILMn5tCVfE9sFzas5ucENeIJJITrtCQ5onbrHir+mZEm5FzkA nQwjFOoR/nJtfurOQQhED8sHP1hZGKatx1emuCzPgulFMoECWEdGPBRo/Yjkc4Xb8j7kx6OJs4opq 8egW7J1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xJoV8-0000000DlDN-1cJQ; Thu, 22 Oct 2026 08:50:18 +0000 Received: from www537.your-server.de ([188.40.3.216]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xJoV5-0000000DlBS-49WK for linux-arm-kernel@lists.infradead.org; Thu, 22 Oct 2026 08:50:17 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ew.tq-group.com; s=default2602; h=Content-Type:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=YAcKsa+N22qMYtLETYzF0/wBbwZ/VrpjV+7wi9PY8jc=; b=Fjvp4tRYs+w2onr2DddcI/RLjM RM9Vkh66VbyHCLExBUIFMhI74h9LVKaDhmCmzUO3tuZL/wAVmNBSL89ficrYac6ppFtsgfRj0l+hU /mRwNe6vHvo1bzs/fdzI+ZxWZvu4S8yJyv0C2atQjvxYU9n8KX2VKTW7iMCrDAGwYapvIK4RspQEX 7mE9YejleLQttF6qj7q1gcDByK11TgyihDPrbc518mGkLVJIVM4m0+wT6zp3vm65OtAAr8+yf/SRJ WBn8R63OjO9wRsdtm/hjReE0zFgmajM4n8dW+fVvIv5g1vl0sk+96FwPBm3emEMikgtWKu7CciAob hNS7aK1g==; Received: from sslproxy07.your-server.de ([78.47.199.104]) by www537.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1xJoUx-000EsD-2E; Thu, 22 Oct 2026 10:50:07 +0200 Received: from localhost ([127.0.0.1]) by sslproxy07.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1xJoUx-000Pxn-0U; Thu, 22 Oct 2026 10:50:07 +0200 From: Alexander Stein To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , "Peng Fan (OSS)" Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux@ew.tq-group.com, Peng Fan Subject: Re: [PATCH 2/2] arm64: dts: imx8qm-tqma8qm: Re-enable A72 cluster after ERR050104 workaround Date: Thu, 22 Oct 2026 10:50:05 +0200 Message-ID: <16849484.O9o76ZdvQC@steina-w> Organization: TQ-Systems GmbH In-Reply-To: <20261022-8qm-v1-2-2a597cb3debd@nxp.com> References: <20261022-8qm-v1-0-2a597cb3debd@nxp.com> <20261022-8qm-v1-2-2a597cb3debd@nxp.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-Virus-Scanned: Clear (ClamAV 1.4.3/28161/Thu Oct 22 08:24:11 2026) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261022_015016_144230_DBB52E5E X-CRM114-Status: GOOD ( 16.09 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hi Peng, thanks for the patch. Am Donnerstag, 22. Oktober 2026, 03:50:02 Mitteleurop=C3=A4ische Sommerzeit= schrieb Peng Fan (OSS): > From: Peng Fan >=20 > The ERR050104 cache coherency workaround for i.MX8QM/8QP has been > merged upstream (d44e08dab27d). The workaround addresses the incorrect > wiring of upper address bits in the A53 subsystem that corrupts TLBI and > IC maintenance operations between A53 and A72 clusters. >=20 > Previously the A72 CPUs (cpu@100, cpu@101) and cpu-map were removed > from the TQMa8QM DTSI with an explicit comment "Due to missing > workaround for ERR050104". With the software workaround is in place, > remove the workaround-comment block and restore the full SMP topology. >=20 > Signed-off-by: Peng Fan > --- > arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi | 7 ------- > 1 file changed, 7 deletions(-) >=20 > diff --git a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi b/arch/arm= 64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > index f0e398eb2aad7..8cd6e75eb87a9 100644 > --- a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > @@ -15,13 +15,6 @@ / { > model =3D "TQ-Systems i.MX8QM TQMa8QM"; > compatible =3D "tq,imx8qm-tqma8qm", "fsl,imx8qm"; > =20 > - /* Due to missing workaround for ERR050104 */ > - cpus { > - /delete-node/ cpu-map; > - /delete-node/ cpu@100; > - /delete-node/ cpu@101; > - }; > - While the patch itself is correct, it is not sufficient. Instead please revert commit 5d20f1ccb3393 ("arm64: dts: imx8qm-tqma8qm-mba8x: Disable Cortex-A72 cluster"). This will restore the thermal zone for cpu1-cluster. This commit was created with the intention to be reverted, once the errata has been dealt with. With the revert: Reviewed-by: Alexander Stein Thanks and best regards, Alexander > memory@80000000 { > device_type =3D "memory"; > /* >=20 >=20 =2D-=20 TQ-Systems GmbH | M=C3=BChlstra=C3=9Fe 2, Gut Delling | 82229 Seefeld, Germ= any Amtsgericht M=C3=BCnchen, HRB 105018 Gesch=C3=A4ftsf=C3=BChrer: Detlef Schneider, R=C3=BCdiger Stahl, Stefan Sch= neider http://www.tq-group.com/