From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934086AbcDFKMe (ORCPT ); Wed, 6 Apr 2016 06:12:34 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:54460 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933798AbcDFKMc (ORCPT ); Wed, 6 Apr 2016 06:12:32 -0400 X-AuditID: cbfee691-f795a6d0000012b5-b5-5704e10d4bfc Date: Wed, 06 Apr 2016 10:12:29 +0000 (GMT) From: MyungJoo Ham Subject: Re: [PATCH v7 06/20] PM / devfreq: exynos: Add support of bus frequency of sub-blocks using passive governor To: =?utf-8?Q?=EC=B5=9C=EC=B0=AC=EC=9A=B0?= , =?utf-8?Q?=EB=B0=95=EA=B2=BD=EB=AF=BC?= , =?utf-8?Q?=ED=81=AC=EC=89=AC=EC=8B=9C=ED=86=A0=ED=94=84?= , "kgene@kernel.org" Cc: "rjw@rjwysocki.net" , "robh+dt@kernel.org" , "pawel.moll@arm.com" , "mark.rutland@arm.com" , "ijc+devicetree@hellion.org.uk" , "galak@codeaurora.org" , "linux@arm.linux.org.uk" , "linux.amoon@gmail.com" , "m.reichl@fivetechno.de" , "tjakobi@math.uni-bielefeld.de" , =?utf-8?Q?=EB=8C=80=EC=9D=B8=EA=B8=B0?= , "linux-kernel@vger.kernel.org" , "linux-pm@vger.kernel.org" , "linux-samsung-soc@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" Reply-to: myungjoo.ham@samsung.com MIME-version: 1.0 X-MTR: 20160406101214895@myungjoo.ham Msgkey: 20160406101214895@myungjoo.ham X-EPLocale: ko_KR.utf-8 X-Priority: 3 X-EPWebmail-Msg-Type: personal X-EPWebmail-Reply-Demand: 0 X-EPApproval-Locale: X-EPHeader: ML X-MLAttribute: X-RootMTR: 20160406101214895@myungjoo.ham X-ParentMTR: X-ArchiveUser: X-CPGSPASS: N X-ConfirmMail: N,general Content-type: text/plain; charset=utf-8 MIME-version: 1.0 Message-id: <2100226609.169661459937543742.JavaMail.weblogic@ep2mlwas02a> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrMIsWRmVeSWpSXmKPExsWyRsSkSJf3IUu4QcseS4vLu+awOTB6fN4k F8AYxWWTkpqTWZZapG+XwJXRe/YZW0EDR8Xcs9+YGhgfsHcxcnIICahLLFpykg3ElhAwkTj6 cAmULSZx4d56IJsLqGYpo8Tzl1NYYIpub+tjhEjMYZR4+2YaWIJFQEXiwYrZrF2MHBxsAnoS Mz8ng4SFBUol+md+AysREZjAJLH4XwFIL7PAQnaJJz8uMUNcoSSxZt8rsCJeAUGJkzOfQC1T ldjQ/pwNIq4mcWzjUqi4uMSFuZfYIWxeiRntT6HichLTvq5hhrClJc7P2sAI883i74+h4vwS x27vYIKwBSSmnjkIVaMlsWL1T6gaPok1C9+ywNTvOrWcGWbX/S1zoXolJLa2PGEFsZkFFCWm dD9kB/mdWUBTYv0ufXSv8Ap4SjzctJIVonUqh8SBH+wTGJVmISmbhWTSLIRJyEoWMLKsYhRN LUguKE5KLzLVK07MLS7NS9dLzs/dxAhMC6f/PZu4g/H+AetDjAIcjEo8vAJWLOFCrIllxZW5 hxhNgZE0kVlKNDkfmHzySuINjc2MLExNTI2NzC3NlMR5daR/BgsJpCeWpGanphakFsUXleak Fh9iZOLglGpgtNwnKqm3y0C9ITknZcXplpMbl//kc/vwbE4IZ6K9QrPgksCdNo/Nf621ZPtz ScxtY8ynI3aO7UYfeXydHW8WLXh5Sr1wyqUmZrNm3Uw2xoLEv9JV99Yay8sr7f1bd+rLtdJF f2O+5+bNDOw8t3B5GSvnbfb6ckkV8Yb/n388+MiW9e/2trP7lFiKMxINtZiLihMBsy0eUgYD AAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrKKsWRmVeSWpSXmKPExsVy+t/tXl3ehyzhBrubTC0u75rD5sDo8XmT XABjVJpNRmpiSmqRQmpecn5KZl66rZJ3cLxzvKmZgaGuoaWFuZJCXmJuqq2Si0+ArltmDtBQ JYWyxJxSoFBAYnGxkr6dTVF+aUmqQkZ+cYmtUrShuZGekYGeqZGeoXGslaGBgZEpUE1CWkbv 2WdsBQ0cFXPPfmNqYHzA3sXIySEkoC6xaMlJNhBbQsBE4va2PkYIW0ziwr31QHEuoJo5jBJv 30xjAUmwCKhIPFgxm7WLkYODTUBPYubnZJCwsECpRP/Mb2AlIgITmCQW/ysA6WUWWMgu8eTH JWaIZUoSa/a9AiviFRCUODnzCQvEMlWJDe3P2SDiahLHNi6FiotLXJh7iR3C5pWY0f4UKi4n Me3rGmYIW1ri/KwNcEcv/v4YKs4vcez2DiYIW0Bi6pmDUDVaEitW/4Sq4ZNYs/AtC0z9rlPL mWF23d8yF6pXQmJryxNWEJtZQFFiSvdDdpDfmQU0Jdbv0kf3Cq+Ap8TDTStZJzDKzkKSmoWk exZCN7KSBYwsqxhFUwuSC4qT0itM9IoTc4tL89L1kvNzNzGCk9CzJTsYGy5YH2IU4GBU4uEV sGIJF2JNLCuuzD3EKMHBrCTCK3sPKMSbklhZlVqUH19UmpNafIjRFBhnE5mlRJPzgQkyryTe 0NjYxMzE1NLEwsDUXEmcN+DvujAhgfTEktTs1NSC1CKYPiYOTqkGxvqN+5+tK/vX+8TizXe9 rJRjsponLvy+Gh240vyU1anzH640azzemNZk/7ZidoDde0lJxoad/tnPbzPGnePiumY+MzE2 /zN38PJX8V/VdwjOs3HeN2+XwH754iym3aey53WlLDQ7+kt7walDcvf2HHnTaz6p+CarOOt2 02+vnkT+WLZ8sVHrWU4lluKMREMt5qLiRACfYJPDWAMAAA== DLP-Filter: Pass X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id u36ACfG9001598 > > This patch adds the support of bus frequency feature for sub-blocks which share > the one power line. If each bus depends on the power line, each bus is not able > to change the voltage by oneself. To optimize the power-consumption on runtime, > some buses using the same power line should change the source clock and > regulator at the same time. So, this patch uses the passive governor to support > the bus frequency for all buses which sharing the one power line. > [] > Signed-off-by: Chanwoo Choi > [tjakobi: Reported debugfs error during booting and cw00.choi fix it.] > Reported-by: Tobias Jakobi Signed-off-by: MyungJoo Ham