linux-kernel - [PATCH v18 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant

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Message-Id: <20181127101145.7682-6-vivek.gautam@codeaurora.org>
Date:   Tue, 27 Nov 2018 15:41:45 +0530
From:   Vivek Gautam <vivek.gautam@...eaurora.org>
To:     joro@...tes.org, robh+dt@...nel.org, robin.murphy@....com,
        will.deacon@....com, iommu@...ts.linux-foundation.org,
        devicetree@...r.kernel.org
Cc:     alex.williamson@...hat.com, mark.rutland@....com,
        rjw@...ysocki.net, robdclark@...il.com,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, sboyd@...nel.org,
        tfiga@...omium.org, jcrouse@...eaurora.org,
        sricharan@...eaurora.org, m.szyprowski@...sung.com,
        architt@...eaurora.org, linux-arm-msm@...r.kernel.org,
        thor.thayer@...ux.intel.com,
        Vivek Gautam <vivek.gautam@...eaurora.org>
Subject: [PATCH v18 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant

qcom,smmu-v2 is an arm,smmu-v2 implementation with specific
clock and power requirements.
On msm8996, multiple cores, viz. mdss, video, etc. use this
smmu. On sdm845, this smmu is used with gpu.
Add bindings for the same.

Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Tomasz Figa <tfiga@...omium.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Reviewed-by: Robin Murphy <robin.murphy@....com>
---
 drivers/iommu/arm-smmu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index f02e0f58e696..29ce9e10abd4 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -121,6 +121,7 @@ enum arm_smmu_implementation {
 	GENERIC_SMMU,
 	ARM_MMU500,
 	CAVIUM_SMMUV2,
+	QCOM_SMMUV2,
 };
 
 struct arm_smmu_s2cr {
@@ -2031,6 +2032,7 @@ ARM_SMMU_MATCH_DATA(smmu_generic_v2, ARM_SMMU_V2, GENERIC_SMMU);
 ARM_SMMU_MATCH_DATA(arm_mmu401, ARM_SMMU_V1_64K, GENERIC_SMMU);
 ARM_SMMU_MATCH_DATA(arm_mmu500, ARM_SMMU_V2, ARM_MMU500);
 ARM_SMMU_MATCH_DATA(cavium_smmuv2, ARM_SMMU_V2, CAVIUM_SMMUV2);
+ARM_SMMU_MATCH_DATA(qcom_smmuv2, ARM_SMMU_V2, QCOM_SMMUV2);
 
 static const struct of_device_id arm_smmu_of_match[] = {
 	{ .compatible = "arm,smmu-v1", .data = &smmu_generic_v1 },
@@ -2039,6 +2041,7 @@ static const struct of_device_id arm_smmu_of_match[] = {
 	{ .compatible = "arm,mmu-401", .data = &arm_mmu401 },
 	{ .compatible = "arm,mmu-500", .data = &arm_mmu500 },
 	{ .compatible = "cavium,smmu-v2", .data = &cavium_smmuv2 },
+	{ .compatible = "qcom,smmu-v2", .data = &qcom_smmuv2 },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, arm_smmu_of_match);
-- 
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