linux-kernel - [PATCH v2 4/5] iommu/mediatek: mt8189: Add INFRA IOMMUs support

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Message-ID: <20251015032509.5057-5-zhengnan.chen@mediatek.com>
Date: Wed, 15 Oct 2025 11:24:20 +0800
From: Zhengnan Chen <zhengnan.chen@...iatek.com>
To: Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>, Will
 Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
CC: <iommu@...ts.linux.dev>, <linux-mediatek@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, Zhengnan Chen
	<zhengnan.chen@...iatek.com>
Subject: [PATCH v2 4/5] iommu/mediatek: mt8189: Add INFRA IOMMUs support

Add support for mt8189 INFRA IOMMUs.

Signed-off-by: Zhengnan Chen <zhengnan.chen@...iatek.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 999f7b858164..2eb62a073a58 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -339,6 +339,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data, unsigned int ban
 #define MTK_IOMMU_4GB_MODE_REMAP_BASE	 0x140000000UL
 
 static LIST_HEAD(apulist);	/* List the apu iommu HWs */
+static LIST_HEAD(infralist);	/* List the iommu_infra HW */
 static LIST_HEAD(m4ulist);	/* List all the M4U HWs */
 
 #define for_each_m4u(data, head)  list_for_each_entry(data, head, list)
@@ -1758,6 +1759,18 @@ static const struct mtk_iommu_plat_data mt8189_data_apu = {
 	.iova_region_larb_msk = mt8189_apu_region_msk,
 };
 
+static const struct mtk_iommu_plat_data mt8189_data_infra = {
+	.m4u_plat	= M4U_MT8189,
+	.flags		= WR_THROT_EN | DCM_DISABLE | MTK_IOMMU_TYPE_INFRA |
+			  CFG_IFA_MASTER_IN_ATF | SHARE_PGTABLE | PGTABLE_PA_35_EN,
+	.hw_list	= &infralist,
+	.banks_num	= 1,
+	.banks_enable	= {true},
+	.inv_sel_reg	= REG_MMU_INV_SEL_GEN2,
+	.iova_region	= single_domain,
+	.iova_region_nr	= ARRAY_SIZE(single_domain),
+};
+
 static const struct mtk_iommu_plat_data mt8192_data = {
 	.m4u_plat       = M4U_MT8192,
 	.flags          = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
@@ -1860,6 +1873,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = {
 	{ .compatible = "mediatek,mt8188-iommu-vdo",   .data = &mt8188_data_vdo},
 	{ .compatible = "mediatek,mt8188-iommu-vpp",   .data = &mt8188_data_vpp},
 	{ .compatible = "mediatek,mt8189-iommu-apu",   .data = &mt8189_data_apu},
+	{ .compatible = "mediatek,mt8189-iommu-infra", .data = &mt8189_data_infra},
 	{ .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data},
 	{ .compatible = "mediatek,mt8195-iommu-infra", .data = &mt8195_data_infra},
 	{ .compatible = "mediatek,mt8195-iommu-vdo",   .data = &mt8195_data_vdo},
-- 
2.46.0