From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sudeep Holla Subject: Re: [PATCH] dts: juno: Enable coresight tmc scatter gather in ETR Date: Tue, 11 Sep 2018 11:35:09 +0100 Message-ID: <20180911103509.GA770@e107155-lin> References: <1536655641-26192-1-git-send-email-suzuki.poulose@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1536655641-26192-1-git-send-email-suzuki.poulose@arm.com> Sender: linux-kernel-owner@vger.kernel.org To: Suzuki K Poulose , linux-arm-kernel@lists.infradead.org Cc: Sudeep Holla , linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org, coresight@lists.linaro.org, robert.walker@arm.com, devicetree@vger.kernel.org, robh@kernel.org, Mike Leach , Liviu Dudau , Lorenzo Pierlisi List-Id: devicetree@vger.kernel.org On 11/09/18 09:47, Suzuki K Poulose wrote: > We do not enable scatter-gather mode in the TMC-ETR by default > to prevent malfunctioning of systems where the ETR may not be > properly connected to the memory subsystem to allow for simultaneous > READ/WRITE transactions when used in SG mode. Instead we whitelist > the platforms where we know that it is safe to use the mode. > > All revisions of Juno have a proper ETR connection and hence > white list them. > Applied conditionally, this conflicts with the patch Mathieu has in his branch. He needs to drop that so that I can take both of them via ARM SoC. -- Regards, Sudeep