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 6F01C606A31D for ; Fri, 23 Oct 2026 05:55:08 +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=wIiSLAS+; 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=chN7L5kR 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=iGuLewHE4DgB3b0yCkKQ6+E+7LwsYzeCtRN/Tj5GI20=; b=wIiSLAS+wEfyTRwaEBn1FC0PLF sH+qQPSXC9TcaMWiFz1k9QJBRl+7mpO4uiqnvh24LR8BaK9bjFGIn31578Ahp5FRpIHBhRK4pPzaW Aajr63jEsFD3r5NmyWW6dH4nXbOqMezDB1mjYnO1EsGURS8XDpecpxposVDKDZs0qXVxpFtXDE1ZJ MV8K3xbcbPEt/rhlACIxjAOcI7GGh9jruFIwxVbVFMEO9/AVE18+iDnqEFfeO0RW7R0ArbKTf8knp RYYdyPCxcsgdMrHj0PfYCaRR98GequHmdQZ1mQ2zaa74I2fwMrGAGjrc24Y8qB7841NUMn/IxL2UW jtrCgWhA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xK8F4-0000000FYAF-0f8D; Fri, 23 Oct 2026 05:55:02 +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 1xK8F0-0000000FY9W-2Sq0 for linux-arm-kernel@lists.infradead.org; Fri, 23 Oct 2026 05:55:01 +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=iGuLewHE4DgB3b0yCkKQ6+E+7LwsYzeCtRN/Tj5GI20=; b=chN7L5kRYkPn6rpcuAsbRekVm3 R9qd4xqn/8AEWZClWMq2ZCh2XK0r/d3eeHMOYIpaYFcx1bUwvb0fR2WEHWs8QWZyy4leMoYT99UhF qV4XeL7j9rnyEqjot2zk4ll8tOUB6luN+3PrNoNK8gx505idtX0+OyIYdv3CScJn6Af6JvAt85zxD aLfEjWobfE3rL6OguZwIU+q+n08KHGXjErSTm7zbmpN/0ZuUOShn4wC1dKM7R0EekcAtggZel7SRR PINNMVNG09D0KRz+bac1kJVblhELRfAIHSd1do+bwhrxIvBvmRUWCEds6jA6+Hq6nxvS6YS4mopdB /hTZ4/Tw==; Received: from sslproxy05.your-server.de ([78.46.172.2]) by www537.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1xK8Ew-000IXG-10; Fri, 23 Oct 2026 07:54:54 +0200 Received: from localhost ([127.0.0.1]) by sslproxy05.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1xK8Ew-000J59-19; Fri, 23 Oct 2026 07:54:53 +0200 From: Alexander Stein To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , linux-arm-kernel@lists.infradead.org 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 , "Peng Fan (OSS)" Subject: Re: [PATCH v2 1/2] arm64: dts: imx8qm-mek: Re-enable A72 cluster after ERR050104 workaround Date: Fri, 23 Oct 2026 07:54:52 +0200 Message-ID: <6424356.DvuYhMxLoT@steina-w> Organization: TQ-Systems GmbH In-Reply-To: <20261023-8qm-v2-1-a8812a888e3c@nxp.com> References: <20261023-8qm-v2-0-a8812a888e3c@nxp.com> <20261023-8qm-v2-1-a8812a888e3c@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_225458_763271_E0BD04DB X-CRM114-Status: GOOD ( 14.85 ) 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=-14.2 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, Am Freitag, 23. Oktober 2026, 04:56:59 Mitteleurop=C3=A4ische Sommerzeit sc= hrieb 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), the cpu-map, and the > cpu1-thermal zone were removed from the MEK board DT to avoid incorrect > cross-cluster coherency maintenance. With the software workaround in > place, restore all deleted nodes and add A72_0/A72_1 to the PMIC thermal > cooling-device map so both clusters are properly managed. >=20 > Signed-off-by: Peng Fan Maybe it's woth mentioning you are essentially also reverting commit bce07345481cd ("arm64: dts: imx8qm-mek: delete A72 thermal zone"). But either way: Reviewed-by: Alexander Stein Best regards Alexander > --- > arch/arm64/boot/dts/freescale/imx8qm-mek.dts | 14 +++----------- > 1 file changed, 3 insertions(+), 11 deletions(-) >=20 > diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/bo= ot/dts/freescale/imx8qm-mek.dts > index 9e49ac377162b..d346958965026 100644 > --- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts > +++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts > @@ -17,16 +17,6 @@ chosen { > stdout-path =3D &lpuart0; > }; > =20 > - cpus { > - /delete-node/ cpu-map; > - /delete-node/ cpu@100; > - /delete-node/ cpu@101; > - }; > - > - thermal-zones { > - /delete-node/ cpu1-thermal; > - }; > - > memory@80000000 { > device_type =3D "memory"; > reg =3D <0x00000000 0x80000000 0 0x40000000>; > @@ -995,7 +985,9 @@ map0 { > cooling-device =3D <&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>; > + <&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, > + <&A72_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, > + <&A72_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; > }; > }; > }; >=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/