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[71.197.186.152]) by smtp.gmail.com with ESMTPSA id k16sm28170462pfu.140.2022.02.11.10.52.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Feb 2022 10:52:41 -0800 (PST) From: Kevin Hilman To: "shunzhou.jiang@amlogic.com" , linux-arm-kernel , linux-amlogic , linux-kernel Cc: Neil Armstrong , jbrunet , Martin Blumenstingl , "jianxin.pan" Subject: Re: Re: [PATCH 2/2] soc: s4: Add support for power domains controller In-Reply-To: <2022021117375354230910@amlogic.com> References: <20220126061018.705338-1-shunzhou.jiang@amlogic.com> <20220126061018.705338-3-shunzhou.jiang@amlogic.com> <7hzgnal5yu.fsf@baylibre.com> <202202091001287547451@amlogic.com> <7hee4bok8w.fsf@baylibre.com> <2022021117375354230910@amlogic.com> Date: Fri, 11 Feb 2022 10:52:41 -0800 Message-ID: <7hwni1me12.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220211_105243_577774_DFFEA911 X-CRM114-Status: GOOD ( 10.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Shunzhou, "shunzhou.jiang@amlogic.com" writes: > Hi Kevin: > Thanks your kindly reply You're welcome. For future reference, please avoid top-posting. See: https://www.kernel.org/doc/html/latest/process/2.Process.html?highlight=top-posting#mailing-lists > For those domains, default is active, we hope not close when in use or not in use, in our case, > only runtime PM (include suspend) control this, so set always on flag to avoid domain shutdown, my question remains: why do want to keep these powered on even when they are not in use? The goal of the power-domain framework + runtime PM is to be able to save power by turnin off power domains when they are not in use. > if you also have concern, we can control this not in kernel, but this not our expect. My strong preference is that this is controlled by the kernel. Kevin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel