linux-kernel - [PATCH v6 10/10] iommu/mediatek: Add mt6779 basic support

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Message-ID: <20200703044127.27438-11-chao.hao@mediatek.com>
Date:   Fri, 3 Jul 2020 12:41:27 +0800
From:   Chao Hao <chao.hao@...iatek.com>
To:     Joerg Roedel <joro@...tes.org>, Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     <iommu@...ts.linux-foundation.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <wsd_upstream@...iatek.com>,
        Chao Hao <chao.hao@...iatek.com>,
        FY Yang <fy.yang@...iatek.com>, Yong Wu <yong.wu@...iatek.com>,
        TH Yang <th.yang@...iatek.com>
Subject: [PATCH v6 10/10] iommu/mediatek: Add mt6779 basic support

1. Start from mt6779, INVLDT_SEL move to offset=0x2c, so we add
   REG_MMU_INV_SEL_GEN2 definition and mt6779 uses it.
2. Add mt6779_data to support mm_iommu HW init.

Cc: Yong Wu <yong.wu@...iatek.com>
Signed-off-by: Chao Hao <chao.hao@...iatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
---
 drivers/iommu/mtk_iommu.c | 9 +++++++++
 drivers/iommu/mtk_iommu.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index a816030d00f1..59e5a62a34db 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -37,6 +37,7 @@
 #define REG_MMU_INVLD_START_A			0x024
 #define REG_MMU_INVLD_END_A			0x028
 
+#define REG_MMU_INV_SEL_GEN2			0x02c
 #define REG_MMU_INV_SEL_GEN1			0x038
 #define F_INVLD_EN0				BIT(0)
 #define F_INVLD_EN1				BIT(1)
@@ -808,6 +809,13 @@ static const struct mtk_iommu_plat_data mt2712_data = {
 	.larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}},
 };
 
+static const struct mtk_iommu_plat_data mt6779_data = {
+	.m4u_plat      = M4U_MT6779,
+	.flags         = HAS_SUB_COMM | OUT_ORDER_WR_EN | WR_THROT_EN,
+	.inv_sel_reg   = REG_MMU_INV_SEL_GEN2,
+	.larbid_remap  = {{0}, {1}, {2}, {3}, {5}, {7, 8}, {10}, {9}},
+};
+
 static const struct mtk_iommu_plat_data mt8173_data = {
 	.m4u_plat     = M4U_MT8173,
 	.flags	      = HAS_4GB_MODE | HAS_BCLK | RESET_AXI,
@@ -824,6 +832,7 @@ static const struct mtk_iommu_plat_data mt8183_data = {
 
 static const struct of_device_id mtk_iommu_of_ids[] = {
 	{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
+	{ .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},
 	{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
 	{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},
 	{}
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 31edd05e2eb1..214898578026 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -37,6 +37,7 @@ struct mtk_iommu_suspend_reg {
 enum mtk_iommu_plat {
 	M4U_MT2701,
 	M4U_MT2712,
+	M4U_MT6779,
 	M4U_MT8173,
 	M4U_MT8183,
 };
-- 
2.18.0