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[2620:137:e000::1:20]) by mx.google.com with ESMTP id s19-20020a056a00195300b0056183db44afsi2509696pfk.102.2022.10.14.03.41.49; Fri, 14 Oct 2022 03:42:02 -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=@collabora.com header.s=mail header.b=Yl0HDSJd; 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=collabora.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229608AbiJNKaU (ORCPT + 99 others); Fri, 14 Oct 2022 06:30:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229470AbiJNKaP (ORCPT ); Fri, 14 Oct 2022 06:30:15 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE71F4E638; Fri, 14 Oct 2022 03:30:13 -0700 (PDT) Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 355946602375; Fri, 14 Oct 2022 11:30:11 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1665743411; bh=6L92KhTI3HHyC9sYJgk4N+q+nYhrAq6X4Q060GaWgUg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Yl0HDSJdvksMkC+OgWrxdQGHbzwV1bbWfJbe+/aoc7oiXV5cLsK7LSQQt+TkBzgzC H652/DSoMWqM+73qpo9QSXoVg0sywrUqtH48e/8Z/De7Uf0NKCDXChKzrglo41Uuft O+VCrcBFME2gcS6knyVcooqRXxF3CEewTlfQilejZmSmTC6Z9Xxo+7PSUhXpJnU5Vx WeLJ2/JNLuQVPNRbPqLQSh8Wok1uNmZximH4QzN7hiIh2etNl8Aq2LjA0UQUvhOlTf eSCDVwgFfkPaBJAwcUjYQ1PSH7ukgE6ZXLxgg79ARmB+WVAHoYE6xp9SwEMrxnx459 4COvF36tVoBjg== Message-ID: <4e89e401-ae10-f8c2-07c5-1cd7950f3e27@collabora.com> Date: Fri, 14 Oct 2022 12:30:08 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.0 Subject: Re: [PATCH] soc: mediatek: pm-domains: Fix the power glitch issue Content-Language: en-US To: Allen-KH Cheng , Matthias Brugger Cc: Project_Global_Chrome_Upstream_Group@mediatek.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Chun-Jie Chen References: <20221014102029.1162-1-allen-kh.cheng@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20221014102029.1162-1-allen-kh.cheng@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS 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 Il 14/10/22 12:20, Allen-KH Cheng ha scritto: > From: Chun-Jie Chen > > Power reset maybe generate unexpected signal. In order to avoid > the glitch issue, we need to enable isolation first to guarantee the > stable signal when power reset is triggered. > > Fixes: 59b644b01cf4 ("soc: mediatek: Add MediaTek SCPSYS power domains") > Signed-off-by: Chun-Jie Chen > Signed-off-by: Allen-KH Cheng > Reviewed-by: Chen-Yu Tsai > Reviewed-by: Miles Chen Reviewed-by: AngeloGioacchino Del Regno