From mboxrd@z Thu Jan 1 00:00:00 1970 From: heiko@sntech.de (Heiko =?ISO-8859-1?Q?St=FCbner?=) Date: Tue, 29 Nov 2016 10:22:12 +0100 Subject: [PATCH v5 8/8] iommu/rockchip: Enable Rockchip IOMMU on ARM64 In-Reply-To: <20161129004225.GA109697@google.com> References: <1466734413-7453-9-git-send-email-zhengsq@rock-chips.com> <20161129004225.GA109697@google.com> Message-ID: <4463584.aXlFKgYRXe@diego> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am Montag, 28. November 2016, 16:42:27 schrieb Brian Norris: > Hi, > > On Fri, Jun 24, 2016 at 10:13:33AM +0800, Shunqian Zheng wrote: > > From: Simon Xue > > > > This patch makes it possible to compile the rockchip-iommu driver on > > ARM64, so that it can be used with 64-bit SoCs equipped with this type > > of IOMMU. > > > > Signed-off-by: Simon Xue > > Signed-off-by: Shunqian Zheng > > Signed-off-by: Tomasz Figa > > --- > > > > drivers/iommu/Kconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig > > index ad08603..5572621 100644 > > --- a/drivers/iommu/Kconfig > > +++ b/drivers/iommu/Kconfig > > @@ -218,7 +218,7 @@ config OMAP_IOMMU_DEBUG > > > > config ROCKCHIP_IOMMU > > > > bool "Rockchip IOMMU Support" > > > > - depends on ARM > > + depends on ARM || ARM64 > > > > depends on ARCH_ROCKCHIP || COMPILE_TEST > > select IOMMU_API > > select ARM_DMA_USE_IOMMU > > Whatever happened with the rest of this series? Some of the IOMMU bits > made it, but the DRM fixes never did, and so this didn't get applied. > This leaves the whole DRM stack unusable on ARM64 Rockchip systems. > > The patch context has changed a bit on patch 7 (and maybe 6?), so > somebody will need to refresh those on the latest upstream. I've tried forward-porting these when going through Caesars VOP dts patches, but was somewhat unsucessful in my small attempt at the time - see [0]. Heiko [0] https://lkml.org/lkml/2016/11/14/519