linux-kernel - [PATCH v2 3/3] iommu/mediatek: add support for MT8365 SoC

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Date:   Tue, 04 Oct 2022 12:01:41 +0200
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Rob Herring <robh+dt@...nel.org>, Yong Wu <yong.wu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Will Deacon <will@...nel.org>, Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Alexandre Mergnat <amergnat@...libre.com>,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Fabien Parent <fparent@...libre.com>,
        Markus Schneider-Pargmann <msp@...libre.com>,
        Amjad Ouled-Ameur <aouledameur@...libre.com>,
        devicetree@...r.kernel.org, iommu@...ts.linux.dev
Subject: [PATCH v2 3/3] iommu/mediatek: add support for MT8365 SoC

From: Fabien Parent <fparent@...libre.com>

Add IOMMU support for MT8365 SoC.

Signed-off-by: Fabien Parent <fparent@...libre.com>
Reviewed-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
Tested-by: Amjad Ouled-Ameur <aouledameur@...libre.com>
Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 drivers/iommu/mtk_iommu.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index a57ce509c8b5..ce8c9660208e 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -167,6 +167,7 @@ enum mtk_iommu_plat {
 	M4U_MT8186,
 	M4U_MT8192,
 	M4U_MT8195,
+	M4U_MT8365,
 };
 
 struct mtk_iommu_iova_region {
@@ -1531,6 +1532,18 @@ static const struct mtk_iommu_plat_data mt8195_data_vpp = {
 	.int_id_port_width = 5,
 };
 
+static const struct mtk_iommu_plat_data mt8365_data = {
+	.m4u_plat	= M4U_MT8365,
+	.flags		= RESET_AXI,
+	.inv_sel_reg	= REG_MMU_INV_SEL_GEN1,
+	.banks_num	= 1,
+	.banks_enable	= {true},
+	.iova_region	= single_domain,
+	.iova_region_nr	= ARRAY_SIZE(single_domain),
+	.larbid_remap	= {{0}, {1}, {2}, {3}, {4}, {5}}, /* Linear mapping. */
+	.int_id_port_width = 6,
+};
+
 static const struct of_device_id mtk_iommu_of_ids[] = {
 	{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
 	{ .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},
@@ -1543,6 +1556,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = {
 	{ .compatible = "mediatek,mt8195-iommu-infra", .data = &mt8195_data_infra},
 	{ .compatible = "mediatek,mt8195-iommu-vdo",   .data = &mt8195_data_vdo},
 	{ .compatible = "mediatek,mt8195-iommu-vpp",   .data = &mt8195_data_vpp},
+	{ .compatible = "mediatek,mt8365-m4u", .data = &mt8365_data},
 	{}
 };
 

-- 
b4 0.10.1