Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp2143983pxk; Mon, 14 Sep 2020 06:01:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwRQONfk8vKAOk6/8kKCsQ4ad4F6iQNH0A4+i5cpIWpihCFSeXJ76Z3olebKdxVTYVBxGmx X-Received: by 2002:a17:906:fcc8:: with SMTP id qx8mr14260435ejb.13.1600088505353; Mon, 14 Sep 2020 06:01:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600088505; cv=none; d=google.com; s=arc-20160816; b=XsNXt6c6Op+HI8QjZ59NprTxEhGbLr46PmqoS6aLNPgGDk+ZVYnuSHW1xlaeVct5gf +3TFBIEyWHSoMlMX6rZpfxUsheN2PlFN2QqwKWJwOtLJqG3OW+TlcuR3pcMgKfGsIugG nnaoDNh9x9xct+uZMgAFuBd+UmYNcxUkwW3ipPqYB1kKlyl0vlLl+TIJka7g6bMsy4WT f0gknsfuuwIUqwNL6CVz2pIbS+ztSs1NrAE52YFuhm7xIjO402krWquIEafv2zPpKXi6 Gck+wXf0mZjtlaWDUd/NPMUxupDC4v0GnngaGdHiFIsGcyHJcDMrThOrkH7zizdTlXsT gu4g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:dkim-signature; bh=ROlxFZgVA2Swaooaus/a1+q0GqMXxQ0FAmAp3yP/6bY=; b=C9MNNCRbiXhUVAwww/ZuuYN+t6X+oguRlrf/CvO7TIEbc3gEJPyslzIgMPMpkPpfZa 5cqmCngGtmdxcbUBPhUG12+UuDYj75IdWyqQn1f2xsmQly7sDYl0o0XWFYMY4SEp8HIK 7+ZOJ1BrlwlhugwRxX867WzIcIGvE+wV0k2E8se9BYTLOaoBpkzSZHZds82TCZqNA6gg Lrf8OyIlcMjadic37T3Epf9OwOQUETjO1mRwe2IXhswfdyYX+qwYQCqRsdYYzlQSwJRa dzd8M+SSdIAmiYGinzVr76Nus9EcZP1i6j0BGPnL5JRE/2dMywjDOgtGYWl43NzhikLI m2cw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=aSvv3znH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id e24si6597667ejx.162.2020.09.14.06.01.22; Mon, 14 Sep 2020 06:01:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=aSvv3znH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726522AbgINM5X (ORCPT + 99 others); Mon, 14 Sep 2020 08:57:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726533AbgINMtc (ORCPT ); Mon, 14 Sep 2020 08:49:32 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ED11DC06174A; Mon, 14 Sep 2020 05:49:14 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id b124so12504567pfg.13; Mon, 14 Sep 2020 05:49:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ROlxFZgVA2Swaooaus/a1+q0GqMXxQ0FAmAp3yP/6bY=; b=aSvv3znH5p3QtfV/kQJwGkY2pRzv7SRMcndqbikAXwclu1YjKE0lVYiZNlgEY3fgEK SQUUhfrDs9S3Gv7qRZOp7Qz2hfawC7lxdCdm7sNZibCD+Kgk6s8li4yLSmcJ/96Zcr0b 2jyha3hKUs02yriAZZAW6UyzSvxincKiIXcnlkBQ2/cUhFGAIELxFjkZ0ATMdsRIAKAX 5LdYGpzi558jCJy6WJQMkZugoSSpNSFoxWj+ktNGKXMzyinEj4fdG9QiS/bL658GgSik ivaj15mNwpgb3NjX/UEysV0ceWHJqSSypNlu6hHMeQxBrJiAsaiJALpuaxGlXZ1a87hx AB4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ROlxFZgVA2Swaooaus/a1+q0GqMXxQ0FAmAp3yP/6bY=; b=XZTQUwTDXGdoLMlwBOd7Uc+8J9aZJp/9t1VHnk/aQBvMoxyvG+4N/loNO8Xf0xbJ0G aS9j13zWOWtbGUtlGNDicPfLCC7jxsZEQnccl8AnUCf3DWK1eRyFBsYjgvOFuHXMRWXE cULfl7V+dGnlRd22WazLo4CJPlSx94q8T5YdEzJElYUSH4jQrlr3E/PRQ9zUX7z3Kddh 0DfxUhIdWqVsrYC9NdRyj8KOxb1i2xYFaLst2CaV4llRSkJYv/fjoY4+vSxoWGmCWUa2 54OsaNreZ6K29iwf1Yo9S1B9UeET57uWfX/ATAFTmyTExJ4przCDehnp5Pq+hpT7eDAK zvqA== X-Gm-Message-State: AOAM531VzQEloQOWafjq2+iWZlLHLoNxNIUUMYT6XseRXwlw3kfowPj2 5a/ojTgFfaYfgn1EfbfR2C28A5khV5o/skE/H2A= X-Received: by 2002:a63:c543:: with SMTP id g3mr10946987pgd.203.1600087754465; Mon, 14 Sep 2020 05:49:14 -0700 (PDT) MIME-Version: 1.0 References: <1599890246-21191-1-git-send-email-qii.wang@mediatek.com> In-Reply-To: <1599890246-21191-1-git-send-email-qii.wang@mediatek.com> From: Andy Shevchenko Date: Mon, 14 Sep 2020 15:48:56 +0300 Message-ID: Subject: Re: [PATCH] i2c: mediatek: Fix generic definitions for bus frequencies To: qii.wang@mediatek.com Cc: Wolfram Sang , linux-i2c , devicetree , linux-arm Mailing List , Linux Kernel Mailing List , "moderated list:ARM/Mediatek SoC support" , srv_heupstream , Leilk Liu Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Sep 12, 2020 at 9:02 AM wrote: > > From: Qii Wang > > The master code needs to being sent when the speed is more than > I2C_MAX_FAST_MODE_PLUS_FREQ instead of > I2C_MAX_HIGH_SPEED_MODE_FREQ. Fix it. > > Signed-off-by: Qii Wang > --- > drivers/i2c/busses/i2c-mt65xx.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > index efc1404..0cbdfbe 100644 > --- a/drivers/i2c/busses/i2c-mt65xx.c > +++ b/drivers/i2c/busses/i2c-mt65xx.c > @@ -681,8 +681,8 @@ static int mtk_i2c_calculate_speed(struct mtk_i2c *i2c, unsigned int clk_src, > unsigned int cnt_mul; > int ret = -EINVAL; > > - if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) > - target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; > + if (target_speed > I2C_MAX_HIGH_SPEED_MODE_FREQ) > + target_speed = I2C_MAX_HIGH_SPEED_MODE_FREQ; Thanks for fixing this. Indeed, somehow I messed these up. > > max_step_cnt = mtk_i2c_max_step_cnt(target_speed); > base_step_cnt = max_step_cnt; > @@ -759,7 +759,7 @@ static int mtk_i2c_set_speed(struct mtk_i2c *i2c, unsigned int parent_clk) > for (clk_div = 1; clk_div <= max_clk_div; clk_div++) { > clk_src = parent_clk / clk_div; > > - if (target_speed > I2C_MAX_FAST_MODE_FREQ) { > + if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) { But this one is not related. Original code used to have #define MAX_FS_MODE_SPEED 400000 if (target_speed > MAX_FS_MODE_SPEED) { And this change doesn't fix the above mentioned problem. So, please split into two separate changes. > /* Set master code speed register */ > ret = mtk_i2c_calculate_speed(i2c, clk_src, > I2C_MAX_FAST_MODE_FREQ, > -- > 1.9.1 -- With Best Regards, Andy Shevchenko