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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 360CBC07EBF for ; Fri, 18 Jan 2019 19:48:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 05E832087E for ; Fri, 18 Jan 2019 19:48:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729319AbfARTsG (ORCPT ); Fri, 18 Jan 2019 14:48:06 -0500 Received: from muru.com ([72.249.23.125]:34284 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729262AbfARTsG (ORCPT ); Fri, 18 Jan 2019 14:48:06 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 7597E8047; Fri, 18 Jan 2019 19:48:12 +0000 (UTC) Date: Fri, 18 Jan 2019 11:48:02 -0800 From: Tony Lindgren To: Andreas Kemnade Cc: Discussions about the Letux Kernel , paul@pwsan.com, sboyd@kernel.org, mturquette@baylibre.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, bcousson@baylibre.com, linux-omap@vger.kernel.org, linux-clk@vger.kernel.org, Keerthy Subject: Re: [Letux-kernel] [PATCH v3 3/3] arm: omap_hwmod disable ick autoidling when a hwmod requires that Message-ID: <20190118194802.GZ5544@atomide.com> References: <20190116220429.9136-1-andreas@kemnade.info> <20190116220429.9136-4-andreas@kemnade.info> <20190118154807.GV5544@atomide.com> <20190118181827.7163bee4@aktux> <20190118183630.GX5544@atomide.com> <20190118203832.3be7975e@aktux> <20190118204204.44db353f@aktux> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190118204204.44db353f@aktux> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org * Andreas Kemnade [190118 19:42]: > On Fri, 18 Jan 2019 20:38:47 +0100 > Andreas Kemnade wrote: > > > Hi, > > > > On Fri, 18 Jan 2019 10:36:30 -0800 > > Tony Lindgren wrote: > > > > [...] > > > til the next workaround. > > > > > > > That flags also causes the iclk being enabled/disabled > > > > manually. > > > > > > Yes but SWSUP_IDLE for the interface clock to me currently > > > just means: > > > > > > "manually enable and disable ocp interface clock" > > > > > well, if we want to manually disable it and not automatically, > > we have to disable autoidle or it will be automatically disabled. > > > > Disabling it manually when it is already auto-disabled (by autoidle) is > > just practically a no-op towards the clock. > > > > > and with your changes it becomes: > > > > > > "manually enable and disable ocp interface clock and block > > > autoidle while in use". > > > > > > So aren't we now changing the way things behave in general > > > for SWSUP_IDLE? > > > > > Yes, we are, so proper testing is needed. But If I read those comments > > it was always intended this way but not fully implemented because it > > appeared to be more work like needing a usecounter (which my patchset > > also adds) for that autoidle flag. > > > and there are quite few hwmods marked by this flag. > And then there are those clocks marked by this flags (on am33xx) which > do not have that autoidle feature at all, so the risk is not too high. Keerthy, can you please test this series on top of the related clock patches with your am335x PM test cases? Regards, Tony