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[2620:137:e000::1:20]) by mx.google.com with ESMTP id l10-20020a056a0016ca00b00528d3de8c76si21179151pfc.63.2022.07.27.02.42.18; Wed, 27 Jul 2022 02:42:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231376AbiG0JOt convert rfc822-to-8bit (ORCPT + 99 others); Wed, 27 Jul 2022 05:14:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231977AbiG0JOL (ORCPT ); Wed, 27 Jul 2022 05:14:11 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 968FCF79 for ; Wed, 27 Jul 2022 02:13:24 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oGd6M-0002GS-78; Wed, 27 Jul 2022 11:13:10 +0200 Received: from [2a0a:edc0:0:900:1d::4e] (helo=lupine) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1oGd6L-0004W1-DD; Wed, 27 Jul 2022 11:13:09 +0200 Received: from pza by lupine with local (Exim 4.94.2) (envelope-from ) id 1oGd6K-0004jc-L2; Wed, 27 Jul 2022 11:13:08 +0200 Message-ID: Subject: Re: [PATCH v2 2/2] reset: tps380x: Add TPS380x device driver supprt From: Philipp Zabel To: Marco Felsch , robh+dt@kernel.org, krzk+dt@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Date: Wed, 27 Jul 2022 11:13:08 +0200 In-Reply-To: <20220726084518.qmb2wjcazi3djcqr@pengutronix.de> References: <20220530092226.748644-1-m.felsch@pengutronix.de> <20220530092226.748644-2-m.felsch@pengutronix.de> <20220726084518.qmb2wjcazi3djcqr@pengutronix.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT User-Agent: Evolution 3.38.3-1 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Marco, On Di, 2022-07-26 at 10:45 +0200, Marco Felsch wrote: > Hi Philipp, > > gentle ping. Applied to reset/next. I've taken liberty to remove the TODO comment, see below: > On 22-05-30, Marco Felsch wrote: [...] > > + /* > > + * Todo: > > + * Add firmware handling to switch between min/typ/max reset time > > + */ I've dropped this because I think waiting for max reset time is the only way to guarantee correctness, if we expect that tps3801 delay times actually vary between min and max reset time (whether that is due to production variance or temperature sensitivity). If a board vendor can guarantee that the actual max delay on a given board is less than the specified max reset time, this could be handled via an optional device tree parameter to overrride the delay. regards Philipp >