From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 134D217C68; Fri, 7 Feb 2025 12:37:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=93.104.207.81 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738931880; cv=none; b=XQhFmWjAzKcwVL9w0lrijn7HZ45dPDLr37xsQDF4fCnhlDNNNzU91+D1uQgT/9Dar+6diNwzsE+Z8Zqgcjl7Hcd37/3QWiewCOHHOxfvcHO8om2r7+7T3fcRUum6Nf36AYG5kXYGf+Vp5It6aa3aJtpX36oSoBsHd6WdfNSOdYs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738931880; c=relaxed/simple; bh=Hb1BL9HTKTtLH1zeyF/ibnMzCyaoavTXsXdsLMI6yWg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZboMefRkA+2xThPa21NQDBAfdqEosuVccLj71l2HQ6Qq+iqpF0vxMSJW2xhL6icH4v2eNP2Wfo1CpXcehaIhfa5BfPe6p8Zr3nEQqE3Dle9oQu5QGDWn/FW6IkAUjbL0smKprXjfXwHKTuFp4z24OW520CHeSrEf7cnwSMsgQR4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ew.tq-group.com; spf=pass smtp.mailfrom=ew.tq-group.com; dkim=pass (2048-bit key) header.d=tq-group.com header.i=@tq-group.com header.b=VxKT+Rdn; dkim=fail (0-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b=I1/z7SKq reason="key not found in DNS"; arc=none smtp.client-ip=93.104.207.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tq-group.com header.i=@tq-group.com header.b="VxKT+Rdn"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b="I1/z7SKq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1738931878; x=1770467878; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Hb1BL9HTKTtLH1zeyF/ibnMzCyaoavTXsXdsLMI6yWg=; b=VxKT+RdnIvXE1OAQD5x0wlRcIMsE3HhKXI427gBPkdYDcEDyCpPYWncT cMGFZsYLAV237mViai/7Nats//RZRtDnpX16JoYSb4yYMiOw1KR+l0pcu czAZiN+5ENCkc4rFNQncW2lWqqTB8j2cVsKEUSQoK/D+CT7qwOG+hZD27 ncpc/r6/BV4RBbGt2+cPawcq2kl7YyaOoWO3iM+37lFzS2lLLDiosErkN PLE14fT9XdHXun17YICkScCGUI4/5x+P6oFopnqN8rVyuY+5x0eJQcizc 1nxZCmX+OQlgx3sDjyMGQTrYNSatVSNoxb6+uDpxoqfv9hcmHq+3Y9d8v Q==; X-CSE-ConnectionGUID: Sg42n2ozS4C4fhhAH4VPGg== X-CSE-MsgGUID: jQSFvGScTA6Nn+RVtwt9Gg== X-IronPort-AV: E=Sophos;i="6.13,267,1732575600"; d="scan'208";a="41643350" Received: from vmailcow01.tq-net.de ([10.150.86.48]) by mx1.tq-group.com with ESMTP; 07 Feb 2025 13:37:34 +0100 X-CheckPoint: {67A5FE8C-43-727D2C21-EE1B71AA} X-MAIL-CPID: 1E6721796D650DEE10A7DEEE738D12C6_5 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 9884B167399; Fri, 7 Feb 2025 13:37:27 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ew.tq-group.com; s=dkim; t=1738931848; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Hb1BL9HTKTtLH1zeyF/ibnMzCyaoavTXsXdsLMI6yWg=; b=I1/z7SKqrPX2qN6C5RiE/udQgARQgIi1j+FAtEhyXMgksxFGgHeGeoA+rs+40fd9orRLWg evVtGx5cAHqAkcNInDsomMTCCSaEiG6Oxcih+ogR+ni/+g/QOHub8Nrj+F+rvEs8Wj9W+J g2cyhZnxfSmghza5625asIvgAD6EV6okFThIaAbuX/fRCsCE8ntJCPm6XvQsTxJFJWay4d 4wcLWC2lES23ablBxxCOzSKEnc1TbQxvJucOOcDLZJFsJjSt+6HBI2x0UJ4a37YOKwRfTw xXNhKI+GBnWHQJucW7BXfW/7i+VmtB6OyUM7YHaA0t68UJuAR7VvAiskgA4mhQ== From: Alexander Stein To: Peng Fan Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Srinivas Kandagatla , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 04/10] arm64: dts: imx8mn: Add access-controller references Date: Fri, 07 Feb 2025 13:37:27 +0100 Message-ID: <8037692.EvYhyI6sBW@steina-w> Organization: TQ-Systems GmbH In-Reply-To: <20250207120213.GD14860@localhost.localdomain> References: <20250207083616.1442887-1-alexander.stein@ew.tq-group.com> <20250207083616.1442887-5-alexander.stein@ew.tq-group.com> <20250207120213.GD14860@localhost.localdomain> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Last-TLS-Session-Version: TLSv1.3 Hi Peng, Am Freitag, 7. Februar 2025, 13:02:13 CET schrieb Peng Fan: > On Fri, Feb 07, 2025 at 09:36:09AM +0100, Alexander Stein wrote: > >Mark ocotp as a access-controller and add references on peripherals > >which can be disabled (fused). >=20 > I am not sure whether gpcv2 changes should be included in this patchset > or not. Just add access-controller for fused IP will not work. Well, I was able to successfully boot a i.MX8M Nano DualLite. > i.MX8M BLK-CTRL/GPC will hang if the related power domain is still touched > by kernel. The pgc can't power up/down because clock is gated.=20 Well, with GPU node disabled, no one should enable the power domain. But to be on the safe side I would also add access-controllers to the corresponding power domains as well. > This comment also apply to i.MX8MM/P. Sure. Do you have any information what is actually disabled by those fused? It seems it's the IP and their power domains. Anything else? Best regards, Alexander =2D-=20 TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht M=FCnchen, HRB 105018 Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider http://www.tq-group.com/