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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 86051C11D3D for ; Thu, 27 Feb 2020 18:03:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5AE3A246A1 for ; Thu, 27 Feb 2020 18:03:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729232AbgB0SDF (ORCPT ); Thu, 27 Feb 2020 13:03:05 -0500 Received: from muru.com ([72.249.23.125]:58118 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726805AbgB0SDE (ORCPT ); Thu, 27 Feb 2020 13:03:04 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 1715780C0; Thu, 27 Feb 2020 18:03:48 +0000 (UTC) Date: Thu, 27 Feb 2020 10:03:01 -0800 From: Tony Lindgren To: Suman Anna Cc: Tero Kristo , Roger Quadros , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 0/3] Drop PRUSS and OMAP4 IPU/DSP hwmod data Message-ID: <20200227180301.GJ37466@atomide.com> References: <20200224232152.25562-1-s-anna@ti.com> <20200226182603.GT37466@atomide.com> <0f47de68-6b89-4219-5ff9-a9c39b6bc759@ti.com> <20200227012705.GD37466@atomide.com> <188af17e-6293-9e97-b142-3b5f5b69bbd8@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <188af17e-6293-9e97-b142-3b5f5b69bbd8@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org * Suman Anna [200227 17:40]: > On 2/26/20 7:27 PM, Tony Lindgren wrote: > > * Suman Anna [200226 20:31]: > >> On 2/26/20 12:26 PM, Tony Lindgren wrote: > >>> * Suman Anna [200224 15:22]: > >>>> Hi Tony, > >>>> > >>>> The following patches drop the hwmod data for PRUSS on AM33xx and AM437x > >>>> SoCs, and for the IPU and DSP processors on OMAP4 SoC. Patches are based > >>>> on 5.6-rc1. Please consider these for the 5.7 merge window. > >>>> > >>>> I will be submitting another series tomorrow to add the ti-sysc support > >>>> for PRUSS. Nevertheless, the PRUSS hwmods will not be used going forward > >>>> and can be dropped independently. > >>>> > >>>> The IPU and DSP hwmods were never added for OMAP5 and DRA7xx/AM57xx SoCs, > >>>> and the MMU data was already dropped for 5.6-rc1, as it has all been > >>>> converted to ti-sysc and omap-prm. The DT nodes for these will follow > >>>> for the next merge window once the current OMAP remoteproc DT support > >>>> is accepted [1]. > >>> > >>> Well we still need the hwmod data until dts data is in place to reset > >>> and idle these modules. So I'll wait with this set until we have the > >>> dts changes in place. > >> > >> Not really, you cannot just idle these processors devices by themselves > >> without the cores running. The hwmod code actually keeps these in the > >> default reset asserted state itself, so no harm done in dropping the > >> data. The remoteproc bindings are acked, so for next merge window, we > >> can post the dts nodes once those get merged. > > > > OK if they are in reset from the bootloader.. I'll try to check. > > OK thanks. FWIW, we have never added the hwmods for IPUs and DSPs on > OMAP5 and DRA7xx/AM57xx, and most of them are pseudo hwmods anyway for > reset purposes, and do not get exercised until the remoteproc driver > would have specifically requested for them. OK yeah and for omap4 they seem to be in reset like you said. Applying these into omap-for-v5.7/accelerators thanks. Tony