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From:   Yong Wu <yong.wu@mediatek.com>
To:     Joerg Roedel <joro@8bytes.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Rob Herring <robh+dt@kernel.org>
CC:     Tomasz Figa <tfiga@google.com>, Will Deacon <will.deacon@arm.com>,
        <linux-mediatek@lists.infradead.org>,
        <srv_heupstream@mediatek.com>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <iommu@lists.linux-foundation.org>, <arnd@arndb.de>,
        <yingjoe.chen@mediatek.com>, <yong.wu@mediatek.com>,
        <youlin.pei@mediatek.com>, Nicolas Boichat <drinkcat@chromium.org>
Subject: [PATCH v5 10/20] iommu/mediatek: Move reset_axi into plat_data
Date:   Tue, 1 Jan 2019 11:55:42 +0800
Message-ID: <1546314952-15990-11-git-send-email-yong.wu@mediatek.com>
In-Reply-To: <1546314952-15990-1-git-send-email-yong.wu@mediatek.com>
References: <1546314952-15990-1-git-send-email-yong.wu@mediatek.com>
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In mt8173 and mt8183, 0x48 is REG_MMU_STANDARD_AXI_MODE while
it is extended to REG_MMU_CTRL which contains _STANDARD_AXI_MODE in
the other SoCs. I move this property to plat_data since both mt8173
and mt8183 use this property.

It is a preparing patch for mt8183.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 4 ++--
 drivers/iommu/mtk_iommu.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 35a1263..8d8ab21 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -558,8 +558,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
 	}
 	writel_relaxed(0, data->base + REG_MMU_DCM_DIS);
 
-	/* It's MISC control register whose default value is ok except mt8173.*/
-	if (data->plat_data->m4u_plat == M4U_MT8173)
+	if (data->plat_data->reset_axi)
 		writel_relaxed(0, data->base + REG_MMU_STANDARD_AXI_MODE);
 
 	if (devm_request_irq(data->dev, data->irq, mtk_iommu_isr, 0,
@@ -749,6 +748,7 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev)
 	.m4u_plat     = M4U_MT8173,
 	.has_4gb_mode = true,
 	.has_bclk     = true,
+	.reset_axi    = true,
 	.larbid_remap = {0, 1, 2, 3, 4, 5}, /* Linear mapping. */
 };
 
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index eec19a6..b46aeaa 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -47,7 +47,7 @@ struct mtk_iommu_plat_data {
 
 	/* HW will use the EMI clock if there isn't the "bclk". */
 	bool                has_bclk;
-
+	bool                reset_axi;
 	unsigned char       larbid_remap[MTK_LARB_NR_MAX];
 };
 
-- 
1.9.1