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 EA7B6CD3427 for ; Tue, 5 May 2026 14:15:46 +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-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=j1nB02IjvKHpw9cON+cJaf9JT0gkQcPpJ01RGLydvJE=; b=vynb80vd+jscR6VWrn2eN0CBxd dDJmY5wE9USEPu8/N7AOeHCOrnnNOIVo6v3bSxTSp0lypiSWciAymM5QtWhzQEcZRaId2c2bDS9A1 T1T5FqtmkNO55CRdTTnZ1JWwsv8cfXS5Md6dcE83h2UNEKs+u4D394CPANuQ4gzogaf6FQJH5LNZn N1DEBPHCzG/ae+burvq3Nf3uSJmSL8S/C4lO6cPrzrQlnkB7+abSn2jl9WkdMaUjCGpy+6mBXNyqb tomGdcHTVNq1xlmFpjhjffgQqIU9OfsaeADfsCVFzfuqj8b4sci1kKdVyzN0TtkMCB5GAvBm/nRpi TSdI3V3A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wKGYp-0000000GTBL-0xeI; Tue, 05 May 2026 14:15:43 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wKGYo-0000000GTB8-07i2 for linux-arm-kernel@lists.infradead.org; Tue, 05 May 2026 14:15:42 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id EB9CD60154; Tue, 5 May 2026 14:15:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 698A6C2BCB4; Tue, 5 May 2026 14:15:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777990540; bh=FQsBhAgsYHplHV2/vcCwYjBqbsq7KXkPO3MRqXSfMok=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=E6osNGJmPtrOn/dO5V7lDP7Lu/A7Jxq46ChObn5PlgAvC6B/uvqi6QdXgDtylkKuM fustiBuO44Cvy9/Z8gnQ76Exw7F/EXMUM4tSZWdpthwoUGaAcvKTxfr129TuZP6AEp acVDIdJWpmY9DvuBke1cI4BAhj6/Bo7OzY2Lo5qNrUeNE3QZsRE8RiO0sPN9cQVgoK UIC3P1lMZp8WkwsjfaA+BGMryIpLkoMJpkbBeeXm28BjehqGYWBVps0s8ISiwSZ3ti UIk9UYCpdU0ypAKcGcmQqzOppY78h0DnZSdZF+XEj94/78Kh78Mv6n5pO1dnuOpRqM Sg6yu/4lU10xg== Date: Tue, 5 May 2026 09:15:38 -0500 From: Rob Herring To: Marco Felsch Cc: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Krzysztof Kozlowski , Conor Dooley , Marek Vasut , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , laurentiu.palcu@oss.nxp.com, victor.liu@nxp.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/4] Revert "dt-bindings: display: bridge: ldb: Fill in reg property" Message-ID: <20260505141538.GA2547282-robh@kernel.org> References: <20260504-v7-1-topic-ldb-fixes-v1-0-0125d937ff7f@pengutronix.de> <20260504-v7-1-topic-ldb-fixes-v1-2-0125d937ff7f@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260504-v7-1-topic-ldb-fixes-v1-2-0125d937ff7f@pengutronix.de> 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 Mon, May 04, 2026 at 10:21:42PM +0200, Marco Felsch wrote: > This reverts commit 16c8d76abe83d75b578d72ee22d25a52c764e14a. > > Remove the 'reg' and 'reg-names' property from the LDB. > > The LDB is either part of the IOMUX_GPR (i.MX6SX) or the BLKCTRL > (i.MX8MP, i.MX93) register space. Both IOMUX_GPR and BLKCTRL are > register ranges with loose register definitions. E.g. > > - On the i.MX8MP there is one register which controls the AXI > threshold for two different IPs (BIT(31:16) - IP1, BIT(15:0) - IP2). > - On the i.MX6SX IOMUXC_GPR5 controlls: CSI2 mux, WDOG3 settings, PXP > handshake, ... > > In conclusion: it can't be ensured that one register belongs to one > dedicated IP and the LDB is rather an exception than the rule. It is fine if there's a child node for LDB if the LDB registers are consistent, but the other misc things are represented by the parent node. It is certainly not a requirement that either everything be in child nodes or nothing be in child nodes. What I don't see in this series is what problem does this fix? If you are going to break compatibility, then there had better be a good reason. Rob