From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from muru.com (muru.com [72.249.23.125]) by lists.ozlabs.org (Postfix) with ESMTP id 3v4q3Y3cl0zDrQ3 for ; Sat, 21 Jan 2017 05:28:57 +1100 (AEDT) Date: Fri, 20 Jan 2017 10:28:50 -0800 From: Tony Lindgren To: Kishon Vijay Abraham I Cc: Bjorn Helgaas , Jingoo Han , Joao Pinto , Arnd Bergmann , linux-pci@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@axis.com, linux-arm-msm@vger.kernel.org, nsekhar@ti.com Subject: Re: [PATCH 36/37] ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP Message-ID: <20170120182850.GE7403@atomide.com> References: <1484216786-17292-1-git-send-email-kishon@ti.com> <1484216786-17292-37-git-send-email-kishon@ti.com> <20170113171537.GZ2630@atomide.com> <587C628E.7070804@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <587C628E.7070804@ti.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , * Kishon Vijay Abraham I [170115 22:06]: > Hi Tony, > > On Friday 13 January 2017 10:45 PM, Tony Lindgren wrote: > > * Kishon Vijay Abraham I [170112 02:35]: > >> The PCIe programming sequence in TRM suggests CLKSTCTRL of PCIe should > >> be set to SW_WKUP. There are no issues when CLKSTCTRL is set to HW_AUTO > >> in RC mode. However in EP mode, the host system is not able to access the > >> MEMSPACE and setting the CLKSTCTRL to SW_WKUP fixes it. > > > > I guess ideally in the long run we would set this dynamically based on > > the selected mode, right? > > The programming sequence mentioned in the TRM w.r.t clock programming is same > for both host mode or device mode. Though we never faced any issues in host > mode when HW_AUTO is set, it's better to follow TRM recommended settings IMHO. OK best to merge this with the whole series: Acked-by: Tony Lindgren