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Sun, 08 Mar 2020 23:55:41 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 9 Mar 2020 00:55:39 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 9 Mar 2020 15:54:27 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 9 Mar 2020 15:55:55 +0800 Message-ID: <1583740539.3995.15.camel@mtksdaap41> Subject: Re: [PATCH v4 1/7] dt-bindings: gpu: mali-bifrost: Add Mediatek MT8183 From: Nick Fan To: Steven Price Date: Mon, 9 Mar 2020 15:55:39 +0800 In-Reply-To: <20200306144336.GA9234@arm.com> References: <20200207052627.130118-1-drinkcat@chromium.org> <20200207052627.130118-2-drinkcat@chromium.org> <20200225171613.GA7063@bogus> <1583462055.4947.6.camel@mtksdaap41> <20200306144336.GA9234@arm.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200309_005555_465998_006230F3 X-CRM114-Status: GOOD ( 14.50 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Rob Herring , Ulf Hansson , Nicolas Boichat , Tomeu Vizoso , Devicetree List , David Airlie , Liam Girdwood , dri-devel , lkml , Sj Huang , Mark Brown , "moderated list:ARM/Mediatek SoC support" , Alyssa Rosenzweig , Daniel Vetter , Hsin-Yi Wang , Matthias Brugger , linux-arm Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Fri, 2020-03-06 at 14:43 +0000, Steven Price wrote: > On Fri, Mar 06, 2020 at 02:13:08PM +0000, Rob Herring wrote: > > On Thu, Mar 5, 2020 at 8:34 PM Nick Fan wrote: > > > > > > Sorry for my late reply. > > > I have checked internally. > > > The MT8183_POWER_DOMAIN_MFG_2D is just a legacy name, not really 2D > > > domain. > > > > > > If the naming too confusing, we can change this name to > > > MT8183_POWER_DOMAIN_MFG_CORE2 for consistency. > > > > Can you clarify what's in each domain? Are there actually 3 shader > > cores (IIRC, that should be discoverable)? > > The cover letter from Nicolas includes: > > > [ 501.321752] panfrost 13040000.gpu: shader_present=0x7 l2_present=0x1 > > 0x7 is three bits set, so it certainly looks like there are 3 shader > cores. Of course I wouldn't guarantee that it is as simple as each power > domain has a shader core in. The job manager and tiler also need to be > powered somehow, so they are either sharing with a shader core or > there's something more complex going on. > > Steve > There are actually five power domains in total for MT8183 GPU. There are 3 shader cores in MT8183. They can be listed as following for each power domain: 1.MT8183_POWER_DOMAIN_MFG_ASYNC : SOC bus logic 2.MT8183_POWER_DOMAIN_MFG : GPU job manager & tiler 3.MT8183_POWER_DOMAIN_MFG_CORE0 : GPU shader core 0 4.MT8183_POWER_DOMAIN_MFG_CORE1 : GPU shader core 1 5.MT8183_POWER_DOMAIN_MFG_2D : GPU shader core 2 There are other power domain dependency can be reference in the following link. https://lkml.org/lkml/2019/2/1/166 You can check the power domain dependencies as following ========================================================== +static const struct scp_subdomain scp_subdomain_mt8183[] = { + {MT8183_POWER_DOMAIN_MFG_ASYNC, MT8183_POWER_DOMAIN_MFG}, + {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_2D}, + {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_CORE0}, + {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_CORE1}, ========================================================== Thanks Nick Fan _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek