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Fri, 02 Oct 2020 04:04:26 -0700 (PDT) Received: from pi3 ([194.230.155.194]) by smtp.googlemail.com with ESMTPSA id g11sm936712edj.85.2020.10.02.04.04.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Oct 2020 04:04:26 -0700 (PDT) Date: Fri, 2 Oct 2020 13:04:23 +0200 From: Krzysztof Kozlowski To: Yong Wu Subject: Re: [PATCH v3 02/24] dt-bindings: memory: mediatek: Convert SMI to DT schema Message-ID: <20201002110423.GB6888@pi3> References: <20200930070647.10188-1-yong.wu@mediatek.com> <20200930070647.10188-3-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200930070647.10188-3-yong.wu@mediatek.com> Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, kernel-team@android.com, Nicolas Boichat , srv_heupstream@mediatek.com, chao.hao@mediatek.com, Robin Murphy , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Will Deacon , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Wed, Sep 30, 2020 at 03:06:25PM +0800, Yong Wu wrote: > Convert MediaTek SMI to DT schema. > > Signed-off-by: Yong Wu > --- > .../mediatek,smi-common.txt | 49 --------- > .../mediatek,smi-common.yaml | 100 ++++++++++++++++++ > .../memory-controllers/mediatek,smi-larb.txt | 49 --------- > .../memory-controllers/mediatek,smi-larb.yaml | 91 ++++++++++++++++ > 4 files changed, 191 insertions(+), 98 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt > create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml > delete mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt > create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml > > diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt > deleted file mode 100644 > index b64573680b42..000000000000 > --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt > +++ /dev/null > @@ -1,49 +0,0 @@ > -SMI (Smart Multimedia Interface) Common > - > -The hardware block diagram please check bindings/iommu/mediatek,iommu.txt > - > -Mediatek SMI have two generations of HW architecture, here is the list > -which generation the SoCs use: > -generation 1: mt2701 and mt7623. > -generation 2: mt2712, mt6779, mt8173 and mt8183. > - > -There's slight differences between the two SMI, for generation 2, the > -register which control the iommu port is at each larb's register base. But > -for generation 1, the register is at smi ao base(smi always on register > -base). Besides that, the smi async clock should be prepared and enabled for > -SMI generation 1 to transform the smi clock into emi clock domain, but that is > -not needed for SMI generation 2. > - > -Required properties: > -- compatible : must be one of : > - "mediatek,mt2701-smi-common" > - "mediatek,mt2712-smi-common" > - "mediatek,mt6779-smi-common" > - "mediatek,mt7623-smi-common", "mediatek,mt2701-smi-common" > - "mediatek,mt8173-smi-common" > - "mediatek,mt8183-smi-common" > -- reg : the register and size of the SMI block. > -- power-domains : a phandle to the power domain of this local arbiter. > -- clocks : Must contain an entry for each entry in clock-names. > -- clock-names : must contain 3 entries for generation 1 smi HW and 2 entries > - for generation 2 smi HW as follows: > - - "apb" : Advanced Peripheral Bus clock, It's the clock for setting > - the register. > - - "smi" : It's the clock for transfer data and command. > - They may be the same if both source clocks are the same. > - - "async" : asynchronous clock, it help transform the smi clock into the emi > - clock domain, this clock is only needed by generation 1 smi HW. > - and these 2 option clocks for generation 2 smi HW: > - - "gals0": the path0 clock of GALS(Global Async Local Sync). > - - "gals1": the path1 clock of GALS(Global Async Local Sync). > - Here is the list which has this GALS: mt6779 and mt8183. > - > -Example: > - smi_common: smi@14022000 { > - compatible = "mediatek,mt8173-smi-common"; > - reg = <0 0x14022000 0 0x1000>; > - power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; > - clocks = <&mmsys CLK_MM_SMI_COMMON>, > - <&mmsys CLK_MM_SMI_COMMON>; > - clock-names = "apb", "smi"; > - }; > diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml > new file mode 100644 > index 000000000000..76ecc7205438 > --- /dev/null > +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml > @@ -0,0 +1,100 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) You relicense existing GPLv2 work. Please CC all contributors and collect their acks/SoB. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/memory-controllers/mediatek,smi-common.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: SMI (Smart Multimedia Interface) Common > + > +maintainers: > + - Yong Wu > + > +description: |+ > + The hardware block diagram please check bindings/iommu/mediatek,iommu.yaml > + > + MediaTek SMI have two generations of HW architecture, here is the list > + which generation the SoCs use: > + generation 1: mt2701 and mt7623. > + generation 2: mt2712, mt6779, mt8173 and mt8183. > + > + There's slight differences between the two SMI, for generation 2, the > + register which control the iommu port is at each larb's register base. But > + for generation 1, the register is at smi ao base(smi always on register > + base). Besides that, the smi async clock should be prepared and enabled for > + SMI generation 1 to transform the smi clock into emi clock domain, but that is > + not needed for SMI generation 2. > + > +properties: > + compatible: > + oneOf: > + - enum: > + - mediatek,mt2701-smi-common > + - mediatek,mt2712-smi-common > + - mediatek,mt6779-smi-common > + - mediatek,mt8173-smi-common > + - mediatek,mt8183-smi-common > + > + - description: for mt7623 > + items: > + - const: mediatek,mt7623-smi-common > + - const: mediatek,mt2701-smi-common > + > + reg: > + maxItems: 1 > + > + clocks: > + description: | > + apb and smi are mandatory. the async is only for generation 1 smi HW. > + gals(global async local sync) also is optional, here is the list which > + require gals: mt6779 and mt8183. > + minItems: 2 > + maxItems: 4 > + items: > + - description: apb is Advanced Peripheral Bus clock, It's the clock for > + setting the register. > + - description: smi is the clock for transfer data and command. > + - description: async is asynchronous clock, it help transform the smi clock > + into the emi clock domain. > + - description: gals0 is the path0 clock of gals. > + - description: gals1 is the path1 clock of gals. You put here five items, but max are four. Does it really work as intended? > + > + clock-names: > + oneOf: > + - items: > + - const: apb > + - const: smi > + - items: > + - const: apb > + - const: smi > + - const: async > + - items: > + - const: apb > + - const: smi > + - const: gals0 > + - const: gals1 > + > + power-domains: > + maxItems: 1 > + > +required: > + - compatible > + - reg > + - clocks > + - clock-names > + - power-domains > + > +additionalProperties: false > + > +examples: > + - | > + #include > + #include > + > + smi_common: smi@14022000 { > + compatible = "mediatek,mt8173-smi-common"; > + reg = <0x14022000 0x1000>; > + power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; > + clocks = <&mmsys CLK_MM_SMI_COMMON>, > + <&mmsys CLK_MM_SMI_COMMON>; > + clock-names = "apb", "smi"; > + }; > diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt > deleted file mode 100644 > index 8f19dfe7d80e..000000000000 > --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt > +++ /dev/null > @@ -1,49 +0,0 @@ > -SMI (Smart Multimedia Interface) Local Arbiter > - > -The hardware block diagram please check bindings/iommu/mediatek,iommu.txt > - > -Required properties: > -- compatible : must be one of : > - "mediatek,mt2701-smi-larb" > - "mediatek,mt2712-smi-larb" > - "mediatek,mt6779-smi-larb" > - "mediatek,mt7623-smi-larb", "mediatek,mt2701-smi-larb" > - "mediatek,mt8173-smi-larb" > - "mediatek,mt8183-smi-larb" > -- reg : the register and size of this local arbiter. > -- mediatek,smi : a phandle to the smi_common node. > -- power-domains : a phandle to the power domain of this local arbiter. > -- clocks : Must contain an entry for each entry in clock-names. > -- clock-names: must contain 2 entries, as follows: > - - "apb" : Advanced Peripheral Bus clock, It's the clock for setting > - the register. > - - "smi" : It's the clock for transfer data and command. > - and this optional clock name: > - - "gals": the clock for GALS(Global Async Local Sync). > - Here is the list which has this GALS: mt8183. > - > -Required property for mt2701, mt2712, mt6779 and mt7623: > -- mediatek,larb-id :the hardware id of this larb. > - > -Example: > - larb1: larb@16010000 { > - compatible = "mediatek,mt8173-smi-larb"; > - reg = <0 0x16010000 0 0x1000>; > - mediatek,smi = <&smi_common>; > - power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>; > - clocks = <&vdecsys CLK_VDEC_CKEN>, > - <&vdecsys CLK_VDEC_LARB_CKEN>; > - clock-names = "apb", "smi"; > - }; > - > -Example for mt2701: > - larb0: larb@14010000 { > - compatible = "mediatek,mt2701-smi-larb"; > - reg = <0 0x14010000 0 0x1000>; > - mediatek,smi = <&smi_common>; > - mediatek,larb-id = <0>; > - clocks = <&mmsys CLK_MM_SMI_LARB0>, > - <&mmsys CLK_MM_SMI_LARB0>; > - clock-names = "apb", "smi"; > - power-domains = <&scpsys MT2701_POWER_DOMAIN_DISP>; > - }; > diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml > new file mode 100644 > index 000000000000..50793a0e6759 > --- /dev/null > +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml > @@ -0,0 +1,91 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) The same - you need to collect licensing change agreements. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/memory-controllers/mediatek,smi-larb.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: SMI (Smart Multimedia Interface) Local Arbiter > + > +maintainers: > + - Yong Wu > + > +description: |+ > + The hardware block diagram please check bindings/iommu/mediatek,iommu.yaml > + > +properties: > + compatible: > + oneOf: > + - enum: > + - mediatek,mt2701-smi-larb > + - mediatek,mt2712-smi-larb > + - mediatek,mt6779-smi-larb > + - mediatek,mt8173-smi-larb > + - mediatek,mt8183-smi-larb > + > + - description: for mt7623 > + items: > + - const: mediatek,mt7623-smi-larb > + - const: mediatek,mt2701-smi-larb > + > + reg: > + maxItems: 1 > + > + clocks: > + description: | > + apb and smi are mandatory. gals(global async local sync) is optional, > + here is the list which require gals: mt8183. > + minItems: 2 > + maxItems: 3 > + items: > + - description: apb is Advanced Peripheral Bus clock, It's the clock for > + setting the register. > + - description: smi is the clock for transfer data and command. > + - description: the clock for gals. > + > + clock-names: > + oneOf: > + - items: > + - const: apb > + - const: smi > + - items: > + - const: apb > + - const: smi > + - const: gals > + > + power-domains: > + maxItems: 1 > + > + mediatek,smi: > + $ref: /schemas/types.yaml#/definitions/phandle-array > + description: a phandle to the smi_common node. > + > + mediatek,larb-id: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 15 > + description: the hardware id of this larb. > + Required property for mt2701, mt2712, mt6779 and mt7623. You need if-then-required for this. See Documentation/devicetree/bindings/example-schema.yaml for example. Best regards, Krzysztof _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu