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Thu, 1 Aug 2019 09:35:26 +0000 (GMT) X-AuditID: cbfec7f5-b8fff700000010e5-35-5d42b25f6563 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 06.08.04146.E52B24D5; Thu, 1 Aug 2019 10:35:26 +0100 (BST) Received: from [106.120.50.63] (unknown [106.120.50.63]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20190801093526eusmtip2504fbe53fbb76231ced6133f10866950~2wtGa3CFx1153011530eusmtip2j; Thu, 1 Aug 2019 09:35:26 +0000 (GMT) Subject: Re: [PATCH V2 1/2] arm: dts: exynos: Add GPU/Mali T604 node to exynos5250 To: Guillaume Gardet , Krzysztof Kozlowski From: Marek Szyprowski Message-ID: <79a50bdd-17ba-4e2f-5389-4b39ed440685@samsung.com> Date: Thu, 1 Aug 2019 11:35:24 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBKsWRmVeSWpSXmKPExsWy7djPc7rxm5xiDbofillsPLSP3aL/8Wtm i/PnN7BbbHp8jdVixvl9TA6sHmvmrWH02LSqk81j85J6j8+b5AJYorhsUlJzMstSi/TtErgy Vj26xlawi7/iW/t+5gbGx9xdjJwcEgImEtee3GTsYuTiEBJYwSjR0POTFSQhJPCFUWL7mhSI xGdGiba9fUwwHXu725khEssZJX4d2MsG4bxllJh0dz1LFyMHh7BAiMTE1zIgpohAhERTuz1I CbPAXkaJ3m9zGEEGsQkYSnS97WIDsXkF7CRWvb0CFmcRUJHo37YO7ApRgRiJnW96mCFqBCVO znzCAmJzCsRKPFxzDsxmFpCX2P52DjOELS5x68l8qEPnsUt8WVsGYbtINPYcZIewhSVeHd8C ZctInJ7cwwJynIRAM6PEw3Nr2SGcHkaJy00zGCGqrCUOH7/ICvINs4CmxPpd+iCmhICjxPr5 iRAmn8SNt4IQJ/BJTNo2nRkizCvR0SYEMUNNYtbxdXBbD164xDyBUWkWksdmIXlmFpJnZiGs XcDIsopRPLW0ODc9tdg4L7Vcrzgxt7g0L10vOT93EyMwvZz+d/zrDsZ9f5IOMQpwMCrx8J7o dIwVYk0sK67MPcQowcGsJMK7WNw+Vog3JbGyKrUoP76oNCe1+BCjNAeLkjhvNcODaCGB9MSS 1OzU1ILUIpgsEwenVAOjwdrpfHb3HH2uf7T1O+gRUNXawHFceJma7+uEeQJbtfu2BId2vTx1 ct/8vo2sUszTGXxE1e119DT78uQ3GS7r8TtqNoU37nq6rutWhzPT7+xvOb/qWRSXv63MvTdl n/709N6z3GUfuvr2zS8NnVvYp7rlFf4z8EjWj1PPepmmusTmf+oj3c9KLMUZiYZazEXFiQBR nxylKwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrHIsWRmVeSWpSXmKPExsVy+t/xe7pxm5xiDTq2iVpsPLSP3aL/8Wtm i/PnN7BbbHp8jdVixvl9TA6sHmvmrWH02LSqk81j85J6j8+b5AJYovRsivJLS1IVMvKLS2yV og0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/TtEvQyVj26xlawi7/iW/t+5gbGx9xd jJwcEgImEnu725m7GLk4hASWMkr03VvADJGQkTg5rYEVwhaW+HOtiw2i6DWjxJcNb4EcDg5h gRCJia9lQGpEBCIkTi5uZQWpYRbYyyhxZNJTRoiGiawSE99tZgSpYhMwlOh6CzKJk4NXwE5i 1dsrYHEWARWJ/m3rwLaJCsRI7DuznR2iRlDi5MwnLCA2p0CsxMM158BsZgEziXmbHzJD2PIS 29/OgbLFJW49mc80gVFoFpL2WUhaZiFpmYWkZQEjyypGkdTS4tz03GJDveLE3OLSvHS95Pzc TYzAuNp27OfmHYyXNgYfYhTgYFTi4T3R6RgrxJpYVlyZe4hRgoNZSYR3sbh9rBBvSmJlVWpR fnxRaU5q8SFGU6DnJjJLiSbnA2M+ryTe0NTQ3MLS0NzY3NjMQkmct0PgYIyQQHpiSWp2ampB ahFMHxMHp1QD46R7xvvLft8/avHgT+XdF0eUiuN3RbvlpnX+VZNfkKa2cv8Wz7cR3bWSHpv/ 8rx0a6jp+D2PS0wq9ZLFGl2XKYzzN/58kujqfivu1IbNa78nd5SrvhONm7BT2tc9ue31IguJ c1qKfnU/nqoZnPts7yEnGvco4urMzB/OXZU3D98o3PXMsY33qBJLcUaioRZzUXEiAKtKmvrB AgAA X-CMS-MailID: 20190801093526eucas1p15f66af6e216dadfc81bf72c2a1711435 X-Msg-Generator: CA X-RootMTR: 20190731143753epcas2p1345484f3308512832701ef0ba495810e X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190731143753epcas2p1345484f3308512832701ef0ba495810e References: <20190724072008.6272-1-guillaume.gardet@free.fr> <20190725083433.6505-1-guillaume.gardet@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190801_023532_508337_65F3BE7D X-CRM114-Status: GOOD ( 16.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linux-samsung-soc@vger.kernel.org" , Kukjin Kim , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Guillaume, On 2019-07-31 16:37, Guillaume Gardet wrote: >> -----Original Message----- >> From: Krzysztof Kozlowski >> Sent: 26 July 2019 12:40 >> To: Guillaume Gardet >> Cc: linux-samsung-soc@vger.kernel.org; Kukjin Kim ; >> linux-arm-kernel@lists.infradead.org >> Subject: Re: [PATCH V2 1/2] arm: dts: exynos: Add GPU/Mali T604 node to >> exynos5250 >> >> On Thu, 25 Jul 2019 at 14:37, Guillaume Gardet >> wrote: >>>> No, regulator is not provided. On all Exynos boards Mali uses its >>>> own dedicated regulator (and sometimes additional one). It worked in >>>> your case because the regulator was set as always-on but this is a >> workaround for lack of consumers. >>>> Once there is a consumer, the regulator should not be always-on to >>>> save the energy when not used. >>> I do not have the required info here. Do you have it, or could I skip the >> mali-supply for now? >> >> You can guess from regulator name :) >> For the Arndale, the schematics are saying it is buck4. > Thanks. This is buck4 as well for snow. > > On Arndale board, buck4 has a fixed voltage of 1V contrary to snow, which leads to the following error: > [ 21.131930] panfrost 11800000.gpu: Cannot set voltage 925000 uV > > The following change fixes the previous error: > - regulator-min-microvolt = <1000000>; > - regulator-max-microvolt = <1000000>; > + regulator-min-microvolt = <850000>; > + regulator-max-microvolt = <1300000>; > > Should I remove arndale enablement for now until this is fixed separately, or could I add this fixup in this patch serie, as it is related? It is okay to add this fixup to the patch, which sets mali regulator on arndale board. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel