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[71.197.186.152]) by smtp.gmail.com with ESMTPSA id r28sm3261936pfg.62.2019.09.24.12.10.05 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 24 Sep 2019 12:10:05 -0700 (PDT) From: Kevin Hilman To: Christian Hewitt , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: dts: meson: Add capacity-dmips-mhz attributes to G12B In-Reply-To: <1568429380-3231-1-git-send-email-christianshewitt@gmail.com> References: <1568429380-3231-1-git-send-email-christianshewitt@gmail.com> Date: Tue, 24 Sep 2019 12:10:05 -0700 Message-ID: <7htv915x4i.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190924_121007_455695_CDA9CBE0 X-CRM114-Status: UNSURE ( 8.93 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Frank Hartung , Christian Hewitt Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Christian Hewitt writes: > From: Frank Hartung > > From: Frank Hartung nit: duplicate From line. Removed when applying. > Meson G12B SoCs (S922X and A311D) are a big-little design where not all CPUs > are equal; the A53s cores are weaker than the A72s. > > Include capacity-dmips-mhz properties to tell the OS there is a difference > in processing capacity. The dmips values are based on similar submissions for > other A53/A72 SoCs: HiSilicon 3660 [1] and Rockchip RK3399 [2]. > > This change is particularly beneficial for use-cases like retro gaming where > emulators often run on a single core. The OS now chooses an A72 core instead > of an A53 core. > > [1] https://lore.kernel.org/patchwork/patch/862742/ > [2] https://patchwork.kernel.org/patch/10836577/ > > Signed-off-by: Frank Hartung > Signed-off-by: Christian Hewitt Queued for v5.5, Thanks! Kevin _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic