From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolin Chen Subject: Re: [PATCH v10 3/5] iommu/arm-smmu: add NVIDIA implementation for ARM MMU-500 usage Date: Wed, 8 Jul 2020 13:36:50 -0700 Message-ID: <20200708203648.GB28080@Asurada-Nvidia> References: <20200708050017.31563-1-vdumpa@nvidia.com> <20200708050017.31563-4-vdumpa@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20200708050017.31563-4-vdumpa-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Krishna Reddy Cc: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, will-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, robin.murphy-5wv7dgnIgG8@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, yhsu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, snikam-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, praithatha-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, talho-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, bbiswas-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, mperttunen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, nicolinc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, bhuntsman-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org List-Id: linux-tegra@vger.kernel.org On Tue, Jul 07, 2020 at 10:00:15PM -0700, Krishna Reddy wrote: > NVIDIA's Tegra194 SoC has three ARM MMU-500 instances. > It uses two of the ARM MMU-500s together to interleave IOVA > accesses across them and must be programmed identically. > This implementation supports programming the two ARM MMU-500s > that must be programmed identically. > > The third ARM MMU-500 instance is supported by standard > arm-smmu.c driver itself. > > Signed-off-by: Krishna Reddy Reviewed-by: Nicolin Chen