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Mon, 17 Feb 2020 03:35:22 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 17 Feb 2020 03:35:41 -0800 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 17 Feb 2020 19:34:24 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 17 Feb 2020 19:35:55 +0800 Message-ID: <1581939298.4784.12.camel@mhfsdcap03> Subject: Re: [PATCH 2/2] iommu/mediatek: add support for MT8167 From: Yong Wu To: Fabien Parent Date: Mon, 17 Feb 2020 19:34:58 +0800 In-Reply-To: <1581902146.28283.0.camel@mtksdaap41> References: <20200103162632.109553-1-fparent@baylibre.com> <20200103162632.109553-2-fparent@baylibre.com> <1581902146.28283.0.camel@mtksdaap41> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200217_033529_664293_A21BA71A X-CRM114-Status: GOOD ( 17.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, joro@8bytes.org, linux-kernel@vger.kernel.org, CK Hu , iommu@lists.linux-foundation.org, robh+dt@kernel.org, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Fabien, Thanks very much for your patch. On Mon, 2020-02-17 at 09:15 +0800, CK Hu wrote: > +Yong.Wu. > > On Fri, 2020-01-03 at 17:26 +0100, Fabien Parent wrote: > > Add support for the IOMMU on MT8167 > > > > Signed-off-by: Fabien Parent > > --- > > drivers/iommu/mtk_iommu.c | 11 ++++++++++- > > drivers/iommu/mtk_iommu.h | 1 + > > 2 files changed, 11 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > > index 6fc1f5ecf91e..5fc6178a82dc 100644 > > --- a/drivers/iommu/mtk_iommu.c > > +++ b/drivers/iommu/mtk_iommu.c > > @@ -569,7 +569,8 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) > > F_INT_PRETETCH_TRANSATION_FIFO_FAULT; > > writel_relaxed(regval, data->base + REG_MMU_INT_MAIN_CONTROL); > > > > - if (data->plat_data->m4u_plat == M4U_MT8173) > > + if (data->plat_data->m4u_plat == M4U_MT8173 || > > + data->plat_data->m4u_plat == M4U_MT8167) I didn't know mt8167 will do upstream. In my original thought, there is only mt8173 use this setting and the later SoC won't use this, So I used the "m4u_plat" directly here. If we also need support mt8167, then CK's suggestion is reasonable. we could add a new variable like "legacy_ivrp_paddr" from its register name in a seperated patch, then support mt8167 in a new patch. > > regval = (data->protect_base >> 1) | (data->enable_4GB << 31); > > else > > regval = lower_32_bits(data->protect_base) | > > @@ -782,6 +783,13 @@ static const struct mtk_iommu_plat_data mt2712_data = { > > .larbid_remap = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, > > }; > > > > +static const struct mtk_iommu_plat_data mt8167_data = { > > + .m4u_plat = M4U_MT8167, > > + .has_4gb_mode = true, > > + .reset_axi = true, > > + .larbid_remap = {0, 1, 2, 3, 4, 5}, /* Linear mapping. */ > > +}; > > + > > static const struct mtk_iommu_plat_data mt8173_data = { > > .m4u_plat = M4U_MT8173, > > .has_4gb_mode = true, > > @@ -798,6 +806,7 @@ 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,mt8167-m4u", .data = &mt8167_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 ea949a324e33..cb8fd5970cd4 100644 > > --- a/drivers/iommu/mtk_iommu.h > > +++ b/drivers/iommu/mtk_iommu.h > > @@ -30,6 +30,7 @@ struct mtk_iommu_suspend_reg { > > enum mtk_iommu_plat { > > M4U_MT2701, > > M4U_MT2712, > > + M4U_MT8167, > > M4U_MT8173, > > M4U_MT8183, > > }; > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel