From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 796A1C5DF80 for ; Tue, 18 Aug 2026 09:05:43 +0000 (UTC) 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:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dEnljxo0cPfEBmMxWEU2YfmO6Q8TD6rHTlbi0qUFIBw=; b=mxG9ZEdYW5cMGeusCLBcRvroHO l/CAgQS/N9tNRca26i0pZTGv1fPsArv5ye10zDLsr12BdYF4Y4kbEAVoV7r0XJbCMhNxwVNNtiuPr 0xdGxqJQEcmzQiCy+QhIL7f/P/aG2keWH6PEGKTx5czfOIPLvEKa3dqptMBzWYAXLbI9c36IyWVIJ ZRT4t7g4StPTeIqILpScu3OLC8q6olNkxNxT3+sx//pLxK0wjNS2eRCR1mrWnZbnJEf89vyz4j2kK G0wI34LOCgIuVT2UFXAKMNSm8jjqvQ21zJWYZEYYpvkQ++dsTIXVLm+iqXZwYoGwgqnYe9tr3vLiC 6+YPlwKA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wwFlE-00000007ZMG-0ieO; Tue, 18 Aug 2026 09:05:32 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wwFlC-00000007ZLW-3hx3; Tue, 18 Aug 2026 09:05:30 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id EC2F760A61; Tue, 18 Aug 2026 09:05:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 658151F000E9; Tue, 18 Aug 2026 09:05:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787043929; bh=dEnljxo0cPfEBmMxWEU2YfmO6Q8TD6rHTlbi0qUFIBw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=VvEGMl0iEuoU7p4cr7L3b2P1L5Oga5Jz0bPSjRk+B129D3GlF/EJOSQy8hsF8ceOG 3Zhcsd9yvDMlNQbhDM04tqbkyr7rtBcVy0bAz1vFmsKdLQUuWR083cbUh9MKq5zRIS 2dIu9TxTVVTeB6owTDMLeZ/PdeV+Spnx/QwixaQywUd3JNLfm+3iM/QzdHK+tQ9ZHX bNjdXOmKL0yxMqgnOz9nJQFipsHowUBOLZeOxYzqoTH/dDQb0b/FpRqnEWDreP3vgi 5GpjM+jASM2mIvF3KDDdPswQPhb/r1sAXiAx5LmLCvfujTyT9ub7JlKSHdg4NG/rby ukYvrQRtC2gWA== Date: Tue, 18 Aug 2026 11:05:24 +0200 From: Krzysztof Kozlowski To: =?utf-8?B?TWHDrXJh?= Canal Cc: Maxime Ripard , Dave Stevenson , Raspberry Pi Kernel Maintenance , Stefan Wahren , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , kernel-dev@igalia.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line Message-ID: <20260818-idealistic-chivalrous-sawfish-08ddae@quoll> References: <20260816-vc4-reset-control-v1-0-896444373716@igalia.com> <20260816-vc4-reset-control-v1-2-896444373716@igalia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20260816-vc4-reset-control-v1-2-896444373716@igalia.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, Aug 16, 2026 at 11:05:41AM -0300, Ma=C3=ADra Canal wrote: > The BCM2835 PM block has exposed a reset line for the V3D block since > commit 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains This is a reset provider driver, so not really relevant here. Driver commit would be relevant if it was about consumer who implemented undocumented ABI. I suggest to drop reference to driver and instead describe the hardware. > under a new binding."), which allows the GPU to be reset without > power-cycling its domain. Document it so that the vc4 driver can use it to > recover from a GPU hang. Does every device have it? Cygnus as well? Best regards, Krzysztof