From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joseph Lo Subject: Re: [PATCH 03/23] ARM: dt: tegra30: iommu: Add "nvidia,memory-clients" Date: Wed, 26 Jun 2013 19:04:06 +0800 Message-ID: <1372244646.2986.17.camel@jlo-ubuntu-64.nvidia.com> References: <1372238906-9346-4-git-send-email-hdoyu@nvidia.com> <20130626101028.GD27083@manwe> <20130626.133314.1520719774895092173.hdoyu@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20130626.133314.1520719774895092173.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Hiroshi Doyu Cc: "thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" , "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" List-Id: iommu@lists.linux-foundation.org On Wed, 2013-06-26 at 18:33 +0800, Hiroshi Doyu wrote: > Thierry Reding wrote @ Wed, 26 Jun 2013 12:10:30 +0200: > > > * PGP Signed by an unknown key > > > > On Wed, Jun 26, 2013 at 12:28:06PM +0300, Hiroshi Doyu wrote: > > > Add "nvidia,memory-clients" to identify which swgroup ID a device > > > belongs to. > > > > Why not call the property "nvidia,swgid" instead? That seems a lot more > > intuitive. > > Tegra powerdomain also needs this info. Joseph? Ah, yes. We need some kind of this information to know the relation in the power domain when we wants to power down it. But it didn't upstream yet and still in very early stage of the design. I believe you can ignore that and do the good design here for your usage. We can re-use the binding if it point to the same HW behind that. Thanks, Joseph