From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH v4 0/8] cpufreq: use cpufreq-cpu0 driver for exynos based platforms Date: Wed, 14 May 2014 14:51:22 +0200 Message-ID: <7170433.Ah6fefFrHR@wuerfel> References: <1400029876-5830-1-git-send-email-thomas.ab@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <1400029876-5830-1-git-send-email-thomas.ab@samsung.com> Sender: cpufreq-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org Cc: Thomas Abraham , cpufreq@vger.kernel.org, devicetree@vger.kernel.org, l.majewski@samsung.com, kgene.kim@samsung.com, mturquette@linaro.org, heiko@sntech.de, viresh.kumar@linaro.org, t.figa@samsung.com, rjw@rjwysocki.net, linux-samsung-soc@vger.kernel.org, thomas.ab@samsung.com, shawn.guo@linaro.org List-Id: devicetree@vger.kernel.org On Wednesday 14 May 2014 06:41:08 Thomas Abraham wrote: > > The patch series removes the use of Exynos specific cpufreq driver and enables > the use of cpufreq-cpu0 driver for Exynos4210, Exynos4x12 and Exynos5250 based > platforms. This is being done for few reasons. > > (a) The Exynos cpufreq driver reads/writes clock controller registers > bypassing the Exynos CCF driver which is sort of problematic. > (b) Removes the need for having clock controller register definitions > in the cpufreq driver and also removes the need for statically > io-remapping clock controller address space (helps in moving towards > multiplatform kernel). > Thanks a lot for your continued effort. Looks great overall, but I have one comment about the general way the cpu0 cpufreq driver works, not specific to the exynos implementation. See my reply to patch 4. Arnd