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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 96869C43460 for ; Wed, 12 May 2021 16:54:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5F9F761285 for ; Wed, 12 May 2021 16:54:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240449AbhELQzo (ORCPT ); Wed, 12 May 2021 12:55:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239591AbhELQKM (ORCPT ); Wed, 12 May 2021 12:10:12 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 888AEC061264; Wed, 12 May 2021 08:46:10 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id 82-20020a1c01550000b0290142562ff7c9so3287389wmb.3; Wed, 12 May 2021 08:46:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=t/meNjZ0Nht+RonvzyRGNz+Sylq/Yz/vgFjTi37bDrE=; b=p5H95YkRm4qypJ1VXfunFTs2qXkp3RFcPncyQHjSJbn/3m9QkH/OQu1lUj3zhLqIdW feakVA3m4oTBW0eOYpdDK5G83qoWpWdUFpOoow6+H1zn78zwpoNKI8sIH2YxEi4ihzdo F8Pj8aT+sifNO1+kh5HW9mdwQNzOloBZ3HHeX45DLJvE5WO7Z1D4oP2+y41/k2IYfKYN b7MreOOv9dgsFa2sXpPVWoLLpVvn/K/RmkUM5uJZErt6IyyLhyOvycvSkyk7/LlXmoB2 DjfvXjwpvZh1j6yksb6cpBSSA5mCbeeIeYnmN8tqWW48Fa60sSz++wbjs8GnZswdM5dS j59Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=t/meNjZ0Nht+RonvzyRGNz+Sylq/Yz/vgFjTi37bDrE=; b=igL36UJWMIlqHcIej1u5N9f/yldqWXSwxkzgVpbRTCfmW5GP/2rICo+U35QoQUIfUP UlTawayGJT5KDsdXj+xTXZcvhFBc0hdc7JyeJQjW3DVc0hfM/WS7uZc5QGv7QY2z+YLO M3vXrrBEjkMZO3J/dcywOt5S/VyZPIk3pV1+ohJEISCq2LIk67JsbG/fbLxPPeU2y9uW gV/Cxl3cJ6cjCLMHM86Awik2GewIjECt2Sqw+EHKfECwMEKVbjA2+gixJiKnu8Qxl7MQ 7gkfAeiNGLvaY6ES31SsWD2hXl9tm5U6qRsbfj+BnsHm3bVRWqbOGyeW0vy9veVGAsZF JEhQ== X-Gm-Message-State: AOAM532jmlaCGJCjjshwVdMOPH1sBu+whdZRjwykQkyMJQB3n2zVJ0np CHidJ+DMWx3cPwQ2N6r9C/Y= X-Google-Smtp-Source: ABdhPJwYuTCotr2sEyzdL2rZRhrQqc7oqM7Iiyowlk8hQGp59sT8OOJrmqBcqcP+2r/KwlLq3/sU4g== X-Received: by 2002:a05:600c:322a:: with SMTP id r42mr39484143wmp.98.1620834369271; Wed, 12 May 2021 08:46:09 -0700 (PDT) Received: from ziggy.stardust ([37.223.140.37]) by smtp.gmail.com with ESMTPSA id p1sm48270wrs.50.2021.05.12.08.46.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 May 2021 08:46:08 -0700 (PDT) Subject: Re: [PATCH v21 3/5] i2c: mediatek: mt65xx: add optional vbus-supply To: Hsin-Yi Wang , Wolfram Sang , Rob Herring , Bartosz Golaszewski Cc: linux-i2c@vger.kernel.org, Qii Wang , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Brown , Marek Szyprowski , Bibby Hsieh , Arnd Bergmann References: <20210507131406.2224177-1-hsinyi@chromium.org> <20210507131406.2224177-4-hsinyi@chromium.org> From: Matthias Brugger Message-ID: <6e971f16-a325-34cd-faaa-cfd51db86c66@gmail.com> Date: Wed, 12 May 2021 17:46:07 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <20210507131406.2224177-4-hsinyi@chromium.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 07/05/2021 15:14, Hsin-Yi Wang wrote: > Add vbus-supply which provides power to SCL/SDA. Pass this regulator > into core so it can be turned on/off for low power mode support. > > Signed-off-by: Hsin-Yi Wang Reviewed-by: Matthias Brugger > --- > drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > index 5ddfa4e56ee2..22d1d14b5de5 100644 > --- a/drivers/i2c/busses/i2c-mt65xx.c > +++ b/drivers/i2c/busses/i2c-mt65xx.c > @@ -1220,6 +1220,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) > i2c->adap.quirks = i2c->dev_comp->quirks; > i2c->adap.timeout = 2 * HZ; > i2c->adap.retries = 1; > + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); > + if (IS_ERR(i2c->adap.bus_regulator)) { > + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) > + i2c->adap.bus_regulator = NULL; > + else > + return PTR_ERR(i2c->adap.bus_regulator); > + } > > ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); > if (ret) >