From 50a212ec906f7524620675f0c57357691c26c81f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 16 Oct 2024 01:20:19 +0000
Subject: [PATCH] 修改GPIO导出默认初始值

---
 kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c
index 3864111..373cf0d 100644
--- a/kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c
+++ b/kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c
@@ -275,6 +275,13 @@
 			ctx->secure_init = true;
 		}
 
+		/* Disable context bank before programming */
+		iommu_writel(ctx, ARM_SMMU_CB_SCTLR, 0);
+
+		/* Clear context bank fault address fault status registers */
+		iommu_writel(ctx, ARM_SMMU_CB_FAR, 0);
+		iommu_writel(ctx, ARM_SMMU_CB_FSR, ARM_SMMU_FSR_FAULT);
+
 		/* TTBRs */
 		iommu_writeq(ctx, ARM_SMMU_CB_TTBR0,
 				pgtbl_cfg.arm_lpae_s1_cfg.ttbr |

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