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 14703C27C77 for ; Wed, 12 Jun 2024 14:02:35 +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:To:From:Date:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rXaeEvMJC2omXN2DimdPStRgOuZ+6rzmp5OGMEucjLk=; b=o9GbO+juETe+gqI5PkJ7VPq4mG CBttavmOZLLbKF5ua7l2UVdu6Q0xL39FcTTQ4SYW04x4453gGrhtSsCvNSZjveTc336dt/iLbYyZD DN9Qvd8kalmxrdrVy/ok28FouRLwSeKDxgr/VAb2DbHvjpQ88UZTXNNB4ZLFKPupKjuP9zLgqrUqk dFkeqf2mGyJp2Dr5W14g2F/VCKhzHgNhIMvuBiyYqt7bK+stS1axw5pkGsOUzWtbz2+2Smvxk0NqK Vo28ADnO2laUAYcH/77a+WBKqbR0pfXl5cSQ+qcAQqtupx1fvy0gAufjMNB/0qUdM9Y8z4R8uia3b fDEN6Pog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHOYP-0000000CsJJ-3fPu; Wed, 12 Jun 2024 14:02:21 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHOYM-0000000CsHP-2RjR; Wed, 12 Jun 2024 14:02:19 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id EC6AFCE1F0A; Wed, 12 Jun 2024 14:02:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6F57C116B1; Wed, 12 Jun 2024 14:02:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718200933; bh=eX92Qy5bBbTvqj1rZW1BZWOEF8jJThi6VroQb/e/KDE=; h=Date:From:To:Subject:References:In-Reply-To:From; b=BTmhKbucnDuEtueX2mqWsxi3l0U+qHJnfPaoCg30YwnXvATwGTaAx34g+62SNl4hZ /Yznn88XbrM/n7iZjZXZbE18sVs6wM5F5KaREoGPwCIRB6H+DTAUVBOBoyMAnxHAYo k4nU7z7BXjwTQWMa2L+z7VW5vVA8t5CyhMfWXFIjjTgIe/RV8paY3Ti/tfFFv2UfxQ US34jUqyhWXVFaFYel1To6uXVmFjiTpBu4bHvGAx5WzN0wR9id1uNhVW5BauMaD08d rQJXAFtfl/FO2ufhGj+l6KimCGBB3EM2avaynF2ifZzIMgxacVFFgdIqydGImQl0CO mFzs9Knngkohg== Date: Wed, 12 Jun 2024 15:02:08 +0100 From: Lee Jones To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Broadcom internal kernel review list , Stefan Wahren , devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Bjorn Helgaas , linux-pci@vger.kernel.org, Dave Ertman , Lizhi Hou , clement.leger@bootlin.com Subject: Re: Raspberry Pi5 - RP1 driver - RFC Message-ID: <20240612140208.GC1504919@google.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240612_070218_820397_F5538B93 X-CRM114-Status: UNSURE ( 8.45 ) X-CRM114-Notice: Please train this message. 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 Tue, 11 Jun 2024, Andrea della Porta wrote: > Hi, > I'm on the verge of reworking the RP1 driver from downstream in order for it to be > in good shape for upstream inclusion. > RP1 is an MFD chipset that acts as a south-bridge PCIe endpoint sporting a pletora > of subdevices (i.e. Ethernet, USB host controller, I2C, PWM, etc.) whose registers > are all reachable starting from an offset from the BAR address. It's less of an MFD and more of an SoC. Please refrain from implemented entire SoCs in drivers/mfd. Take a look in drivers/soc and drivers/platform. -- Lee Jones [李琼斯]