From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: Re: [PATCH v5] clk: qcom: ipq4019: Add the cpu clock frequency change notifier Date: Tue, 27 Dec 2016 13:45:44 -0800 Message-ID: <20161227214544.GF8288@codeaurora.org> References: <1482417654-2998-1-git-send-email-absahu@codeaurora.org> <1482417654-2998-2-git-send-email-absahu@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1482417654-2998-2-git-send-email-absahu@codeaurora.org> Sender: linux-clk-owner@vger.kernel.org To: Abhishek Sahu Cc: mturquette@baylibre.com, andy.gross@linaro.org, david.brown@linaro.org, varada@codeaurora.org, snlakshm@codeaurora.org, pradeepb@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org On 12/22, Abhishek Sahu wrote: > The current driver code gives the crash or gets hang while switching > the CPU frequency some time. The APSS CPU Clock divider is not glitch > free so it the APPS clock need to be switched for stable clock during > the change. > > This patch adds the frequency change notifier for APSS CPU clock. It > changes the parent of this clock to stable PLL FEPLL500 for > PRE_RATE_CHANGE event. This event will be generated before actual > clock set operations. The clock set operation will again change its > corresponding parent by getting the same from frequency table. > > Signed-off-by: Abhishek Sahu > --- Applied to clk-ipq4019 and merged into clk-next. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project