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[2620:137:e000::1:20]) by mx.google.com with ESMTP id oz32-20020a1709077da000b0070b657ba50dsi21443295ejc.469.2022.06.23.09.35.05; Thu, 23 Jun 2022 09:35:29 -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; dkim=pass header.i=@intel.com header.s=Intel header.b=ir7TMXTJ; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232210AbiFWQ3f (ORCPT + 99 others); Thu, 23 Jun 2022 12:29:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232209AbiFWQ3a (ORCPT ); Thu, 23 Jun 2022 12:29:30 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F72446B3E; Thu, 23 Jun 2022 09:29:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656001769; x=1687537769; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=shSMQSjp0om7znr1pZFQg0KFLkYI8bsl3XjfCXpVkk4=; b=ir7TMXTJtFrLNXMajO3vlX2ht+HQ/kPoPEGb2QdrPnw5nLtwvn+azo7h wyIqygesm+fPIWx8fLtug5WBCirk80rR4un6FiU73ws7Hqh1fFrBXY0Kb v61t34HAvReWFhkTieNuAV7wH5sy3oKuNNkV0TZJwyhif+1b8Rt73jvY0 D5laRS5AUx/8EFNaI/PF3Z/+P+Z/wI1pBMnG7UaVQfT990qsXMAdgagmG 9YOu5HlWCVt73bpzOkbJQKq6zplmebH8+p22j5o/Pb7knICy2gxhX6N4W P+g2PvWIY5mlK3+MLS/vQX+Rs5Jkv0XZMsPU5xdH5Jy3d7vpTyDVl/22f A==; X-IronPort-AV: E=McAfee;i="6400,9594,10386"; a="281498539" X-IronPort-AV: E=Sophos;i="5.92,216,1650956400"; d="scan'208";a="281498539" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2022 09:29:28 -0700 X-IronPort-AV: E=Sophos;i="5.92,216,1650956400"; d="scan'208";a="615634196" Received: from smile.fi.intel.com ([10.237.72.54]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2022 09:29:25 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.95) (envelope-from ) id 1o4Php-000tCz-QO; Thu, 23 Jun 2022 19:29:21 +0300 Date: Thu, 23 Jun 2022 19:29:21 +0300 From: Andy Shevchenko To: Lino Sanfilippo Cc: gregkh@linuxfoundation.org, jirislaby@kernel.org, ilpo.jarvinen@linux.intel.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, vz@mleia.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, lukas@wunner.de, p.rosenberger@kunbus.com, Lino Sanfilippo Subject: Re: [PATCH 5/8] dt_bindings: rs485: Correct delay values Message-ID: References: <20220622154659.8710-1-LinoSanfilippo@gmx.de> <20220622154659.8710-6-LinoSanfilippo@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220622154659.8710-6-LinoSanfilippo@gmx.de> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo X-Spam-Status: No, score=-4.9 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=ham 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 On Wed, Jun 22, 2022 at 05:46:56PM +0200, Lino Sanfilippo wrote: > From: Lino Sanfilippo > > The maximum allowed delay for RTS before and RTS after send is 100 ms. > Adjust the documentation accordingly. Is it only documentation issue? If the code allows this to be set higher than 100, we may not change the documentation since this an ABI (from firmware <--> kernel perspective) we need to support old variants. If the above is true and limit is dictated by the spec, we may issue a warning in the code and drop it to the allowed maximum, otherwise we can't do much here. -- With Best Regards, Andy Shevchenko