| Message ID | 20200103162632.109553-1-fparent@baylibre.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | [1/2] dt-bindings: iommu: Add binding for MediaTek MT8167 IOMMU | expand |
| Context | Check | Description |
|---|---|---|
| robh/checkpatch | success |
Hi, Fabien: On Fri, 2020-01-03 at 17:26 +0100, Fabien Parent wrote: > Add support for the IOMMU on MT8167 > > Signed-off-by: Fabien Parent <fparent@baylibre.com> > --- > 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 do not like to use m4u_plat for the variant of each SoC. If you use m4u_plat, you could drop has_4gb_mode, reset_axi, larbid_remap because you could use m4u_plat to decide the behavior of these variable but the code would be so dirty. So I think you should drop m4u_plat and use a variable to identify this behavior. Regards, CK > 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, > };
On Fri, 3 Jan 2020 17:26:31 +0100, Fabien Parent wrote: > This commit adds IOMMU binding documentation for the MT8167 SoC. > > Signed-off-by: Fabien Parent <fparent@baylibre.com> > --- > Documentation/devicetree/bindings/iommu/mediatek,iommu.txt | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Rob Herring <robh@kernel.org>
+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 <fparent@baylibre.com> > --- > 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) > 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, > };
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 <fparent@baylibre.com> > > --- > > 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, > > }; > >
diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt index ce59a505f5a4..eee9116cf9bb 100644 --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt @@ -60,6 +60,7 @@ Required properties: "mediatek,mt2712-m4u" for mt2712 which uses generation two m4u HW. "mediatek,mt7623-m4u", "mediatek,mt2701-m4u" for mt7623 which uses generation one m4u HW. + "mediatek,mt8167-m4u" for mt8167 which uses generation two m4u HW. "mediatek,mt8173-m4u" for mt8173 which uses generation two m4u HW. "mediatek,mt8183-m4u" for mt8183 which uses generation two m4u HW. - reg : m4u register base and size.
This commit adds IOMMU binding documentation for the MT8167 SoC. Signed-off-by: Fabien Parent <fparent@baylibre.com> --- Documentation/devicetree/bindings/iommu/mediatek,iommu.txt | 1 + 1 file changed, 1 insertion(+)