Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp1136413ybl; Wed, 21 Aug 2019 10:39:52 -0700 (PDT) X-Google-Smtp-Source: APXvYqxjebqL2XRHnP0XgfbafotDD5CZVlLiloUsLAN73KZ1p9sguOhcrF4f5trzcEjohBpdrihu X-Received: by 2002:aa7:9197:: with SMTP id x23mr36550302pfa.95.1566409192841; Wed, 21 Aug 2019 10:39:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566409192; cv=none; d=google.com; s=arc-20160816; b=wllwCEwS7WzyaecrDa3Wn7uBDof7Rx1sLqKnmsYGhs+LP74+WvX+QsWjWPgxx2OGmQ BJ01gKt3jf44jMby+Ygswpa1qI2tOiKa7aYs+YEzPfYhyQxHUavb75noLTYKYOsOElIw h8evmXJfPaytuis0zLFiVJt16zkWyuT0ImNMVQjPpbx4x2zvUesVbLd4t+5SWLUvoisU q/KFB5ph7o26lpBkBH4zPRVENMzJ/8nkp2fC6VySiTUhvsCdSZnzW6zxfA9YtOksJ4dN LImzJWDQ31RckbBErqkJUoOcvvkPx+NYoblKJ5cB8+vskUJQxcs6T7ATKobwUHYUtCnj 0XMw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=d2ipJgskj1KEFwtR3VC5y7DGS2nKxHaE3OCt1pU7bQs=; b=l4DSaVhtTh1J/GUiwPc7O3ZwAKYzg+ja2FHp3XQC7QScwMwuYtrK8vbK6vf8Loo0Hw WbowJR9TX1PF0lP92vhZhlxQTFUV2BRf330qGprW6VBcl4svoDKuTJAXP9kV8tdPvPzv Mo/8prEuvtz8p2QAUQwoxEU+sDLz05HVZVq5nuCXBn5bGP5VJr6zpQpyoWUrdaw2ldeX 73OO5w7fHhrKJT6avdSiXnunVTfbq5R11NBqmjdtTJYBWHAGZptVdIxDIfcqMMIgQ/kn X1VFp3iyDWNirkqwqpuy7nJiudw+xTZKPDid9U70i3WVbVx07EgZpbqZpKTT6WvA+rJL QN5g== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@lunn.ch header.s=20171124 header.b=rDR4iBM6; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s17si12798274pfc.69.2019.08.21.10.39.37; Wed, 21 Aug 2019 10:39:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@lunn.ch header.s=20171124 header.b=rDR4iBM6; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728664AbfHUPpB (ORCPT + 99 others); Wed, 21 Aug 2019 11:45:01 -0400 Received: from vps0.lunn.ch ([185.16.172.187]:49132 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727581AbfHUPpA (ORCPT ); Wed, 21 Aug 2019 11:45:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=d2ipJgskj1KEFwtR3VC5y7DGS2nKxHaE3OCt1pU7bQs=; b=rDR4iBM6F7m5OGmABrNkpFJyBo ItjdBWifYVfJw+pPyL5pd+WkwAK2B9yDLmVb5JNyapKyvXN/KCc9Tr+LcZq3k0rk/L0Va8hx+xKlz 4HG7FjZDKOVGNRriFTRPpZEgxmcT/UYFiwUx/PrhxKPsTyBPHQU+zty8TUmiu1DHuAmw=; Received: from andrew by vps0.lunn.ch with local (Exim 4.89) (envelope-from ) id 1i0Sn9-00060h-P0; Wed, 21 Aug 2019 17:44:55 +0200 Date: Wed, 21 Aug 2019 17:44:55 +0200 From: Andrew Lunn To: Andrey Smirnov Cc: linux-arm-kernel@lists.infradead.org, Fabio Estevam , Shawn Guo , linux-kernel@vger.kernel.org, Chris Healy Subject: Re: [PATCH v2] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100 kHz Message-ID: <20190821154455.GD22091@lunn.ch> References: <20190821013936.12223-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190821013936.12223-1-andrew.smirnov@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 20, 2019 at 06:39:36PM -0700, Andrey Smirnov wrote: > Fiber-optic modules attached to the bus are only rated to work at > 100 kHz, so decrease the bus frequency to accommodate that. > > Signed-off-by: Andrey Smirnov > Cc: Shawn Guo > Cc: Chris Healy > Cc: Fabio Estevam > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org Reviewed-by: Andrew Lunn I took a quick look at some of the SFP standards. 100KHz is part of the standard. So we should try to remember to keep an eye of this as other boards are merged. Andrew