From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Yong Wu <yong.wu@mediatek.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
<iommu@lists.linux.dev>, <linux-mediatek@lists.infradead.org>,
Yunfei Wang <yf.wang@mediatek.com>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<jianjiao.zeng@mediatek.com>, <chengci.xu@mediatek.com>
Subject: [PATCH v3] iommu/mediatek: Set dma_mask for PGTABLE_PA_35_EN
Date: Thu, 16 Mar 2023 18:14:45 +0800 [thread overview]
Message-ID: <20230316101445.12443-1-yong.wu@mediatek.com> (raw)
When we enable PGTABLE_PA_35_EN, the PA for pgtable may be 35bits.
Thus add dma_mask for it.
Fixes: 301c3ca12576 ("iommu/mediatek: Allow page table PA up to 35bit")
Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
v3: Sorry for a typo. Change from "if (!ret)" to "if (ret)".
v2: Just move this out from mt8188 series. Nothing change.
v1: https://lore.kernel.org/linux-mediatek/20230307080555.14399-3-yong.wu@mediatek.com/
---
drivers/iommu/mtk_iommu.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index d5a4955910ff..6a00ce208dc2 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1258,6 +1258,14 @@ static int mtk_iommu_probe(struct platform_device *pdev)
return PTR_ERR(data->bclk);
}
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, PGTABLE_PA_35_EN)) {
+ ret = dma_set_mask(dev, DMA_BIT_MASK(35));
+ if (ret) {
+ dev_err(dev, "Failed to set dma_mask 35.\n");
+ return ret;
+ }
+ }
+
pm_runtime_enable(dev);
if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
--
2.25.1
next reply other threads:[~2023-03-16 10:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-16 10:14 Yong Wu [this message]
2023-03-16 10:24 ` [PATCH v3] iommu/mediatek: Set dma_mask for PGTABLE_PA_35_EN AngeloGioacchino Del Regno
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