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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78874C47258 for ; Fri, 1 May 2020 17:20:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 593782137B for ; Fri, 1 May 2020 17:20:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729469AbgEARUh (ORCPT ); Fri, 1 May 2020 13:20:37 -0400 Received: from foss.arm.com ([217.140.110.172]:44416 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729108AbgEARUg (ORCPT ); Fri, 1 May 2020 13:20:36 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0B2D930E; Fri, 1 May 2020 10:20:36 -0700 (PDT) Received: from bogus (unknown [10.37.12.80]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 764B23F305; Fri, 1 May 2020 10:20:32 -0700 (PDT) Date: Fri, 1 May 2020 18:20:29 +0100 From: Sudeep Holla To: Rob Herring Cc: Linus Walleij , Liviu Dudau , Lorenzo Pieralisi , Kevin Brodsky , Arnd Bergmann , Catalin Marinas , Greg Kroah-Hartman , Lee Jones , Sudeep Holla , Sebastian Reichel , Stephen Boyd , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: [PATCH v2 00/17] Modularizing Versatile Express Message-ID: <20200501172029.GM14018@bogus> References: <20200429205825.10604-1-robh@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200429205825.10604-1-robh@kernel.org> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Wed, Apr 29, 2020 at 03:58:09PM -0500, Rob Herring wrote: > This series enables building various Versatile Express platform drivers > as modules. The primary target is the Fast Model FVP which is supported > in Android. As Android is moving towards their GKI, or generic kernel, > the hardware support has to be in modules. Currently ARCH_VEXPRESS > enables several built-in only drivers. Some of these are needed, but > some are only needed for older 32-bit VExpress platforms and can just > be disabled. For FVP, the pl111 display driver is needed. The pl111 > driver depends on vexpress-osc clocks which had a dependency chain of > vexpress-config --> vexpress-syscfg --> vexpress-sysreg. These > components relied on fixed initcall ordering and didn't support deferred > probe which would have complicated making them modules. All these levels > of abstraction are needlessly complicated, so this series simplifies > things a bit by merging the vexpress-config and vexpress-syscfg > functionality. > > There's a couple of other pieces to this which I've sent out separately > as they don't have dependencies with this series. The cross subsystem > dependencies in this series are mainly the ordering of enabling drivers > as modules. > > A complete git branch is here[1]. Tested on Fast Model FVP Rev C. I am assuming you will send pull request to ARM SoC guys directly. Let me know what's the plan if that's not the case. -- Regards, Sudeep