From 630d965c36ca2a33273384edd6c19657e9d14b5a Mon Sep 17 00:00:00 2001 From: Mitchel Humpherys Date: Thu, 11 Dec 2014 17:21:28 -0800 Subject: iommu/arm-smmu: don't touch the secure STLBIALL register Currently we do a STLBIALL when we initialize the SMMU. However, in some configurations that register is not supposed to be touched and is marked as "Secure only" in the spec. Rip it out. Change-Id: I3a6e3f171f8f9fd82257270e3a7202ecbc8bd6ad Signed-off-by: Mitchel Humpherys --- drivers/iommu/arm-smmu.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index ed60e950c361..6dac151ee330 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -175,7 +175,6 @@ #define PIDR2_ARCH_MASK 0xf /* Global TLB invalidation */ -#define ARM_SMMU_GR0_STLBIALL 0x60 #define ARM_SMMU_GR0_TLBIVMID 0x64 #define ARM_SMMU_GR0_TLBIALLNSNH 0x68 #define ARM_SMMU_GR0_TLBIALLH 0x6c @@ -2077,7 +2076,6 @@ static void arm_smmu_device_reset(struct arm_smmu_device *smmu) } /* Invalidate the TLB, just in case */ - writel_relaxed(0, gr0_base + ARM_SMMU_GR0_STLBIALL); writel_relaxed(0, gr0_base + ARM_SMMU_GR0_TLBIALLH); writel_relaxed(0, gr0_base + ARM_SMMU_GR0_TLBIALLNSNH); -- cgit v1.2.3