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Wed, 02 Oct 2019 08:43:56 -0700 (PDT) Received: from kozik-lap ([194.230.155.145]) by smtp.googlemail.com with ESMTPSA id z5sm2033823wrs.54.2019.10.02.08.43.55 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 02 Oct 2019 08:43:55 -0700 (PDT) Date: Wed, 2 Oct 2019 17:43:53 +0200 From: Krzysztof Kozlowski To: Marek Szyprowski Subject: Re: [PATCH v3 1/2] ARM: dts: exynos: Add support ARM architected timers on Exynos5 Message-ID: <20191002154353.GA3469@kozik-lap> References: <20190828121005.29368-1-m.szyprowski@samsung.com> <20190828121005.29368-2-m.szyprowski@samsung.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190828121005.29368-2-m.szyprowski@samsung.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191002_084358_158752_8B37A8A2 X-CRM114-Status: GOOD ( 13.97 ) 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: Chanwoo Choi , linux-samsung-soc@vger.kernel.org, Marc Zyngier , linux-arm-kernel@lists.infradead.org, Bartlomiej Zolnierkiewicz 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 On Wed, Aug 28, 2019 at 02:10:04PM +0200, Marek Szyprowski wrote: > All CortexA7/A15 based Exynos5 SoCs have ARM architected timers, so enable > support for them directly in the base dtsi. None of the known firmware > properly configures CNTFRQ arch timer register, so force clock frequency > to 24MHz, which is the only configuration supported by the remaining > clock drivers so far. > > Stock firmware for Peach Pit and Pi Chromebooks also doesn't reset > properly other arch timer registers, so add respective properties > indicating that. Other Exynos5-based boards behaves correctly in this area, > what finally allows to enable support for KVM-based virtualization. > > Signed-off-by: Marek Szyprowski > --- > arch/arm/boot/dts/exynos5420-peach-pit.dts | 4 ++++ > arch/arm/boot/dts/exynos54xx.dtsi | 9 +++++++++ > arch/arm/boot/dts/exynos5800-peach-pi.dts | 4 ++++ Thanks, applied. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel