Re: [PATCH v15 1/3] dt-binding: mediatek: add bindings for MediaTek MDP3 components

[Rex-BC Chen <rex-bc.chen@mediatek.com>]

On Wed, 2022-05-18 at 12:09 +0200, Hans Verkuil wrote:
> Hi Moudy,
> 
> On 5/12/22 11:23, Moudy Ho wrote:
> > This patch adds DT binding documents for Media Data Path 3 (MDP3)
> > a unit in multimedia system combined with several components and
> > used for scaling and color format convert.
> > 
> > Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
> > ---
> >  .../bindings/media/mediatek,mdp3-rdma.yaml    | 85
> > +++++++++++++++++++
> >  .../bindings/media/mediatek,mdp3-rsz.yaml     | 65 ++++++++++++++
> >  .../bindings/media/mediatek,mdp3-wrot.yaml    | 70 +++++++++++++++
> >  .../bindings/soc/mediatek/mediatek,ccorr.yaml | 58 +++++++++++++
> >  .../bindings/soc/mediatek/mediatek,wdma.yaml  | 71
> > ++++++++++++++++
> 
> This changes bindings in two subsystems in a single patch. I would
> recommend splitting
> this up. Besides, the subject specifically says "MDP3 components", so
> having other
> components in this patch is confusing.
> 
> The soc bindings can either go through the soc subsystem or through
> the media
> subsystem, but then I need Acked-by from the maintainer.
> 

Hello Hans,

There is something wrong for Moudy's mediatek mail server, so I help
him to reply this mail to prevent the mismatch of discussion between
Moudy and you.

Moudy will split the bindings under ./soc/mediatek
into a separate patch in the next version.

> >  5 files changed, 349 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/media/mediatek,mdp3-rdma.yaml
> >  create mode 100644
> > Documentation/devicetree/bindings/media/mediatek,mdp3-rsz.yaml
> >  create mode 100644
> > Documentation/devicetree/bindings/media/mediatek,mdp3-wrot.yaml
> >  create mode 100644
> > Documentation/devicetree/bindings/soc/mediatek/mediatek,ccorr.yaml
> 
> Why is this part of soc/mediatek instead of media? CSC is typically a
> media operation.
> 
> I'm not saying it is wrong, but it's a bit odd. Apologies if this was
> asked before.
> 
> Regards,
> 
> 	Hans
> 

The purpose of this path change is to allow Mediatek's MDP and DRM to
share the same binding, and the same concept as the previous patch
listed below:


https://patchwork.kernel.org/project/linux-mediatek/patch/20220315061031.21642-4-moudy.ho@mediatek.com/
The current path is preliminary and subject to review. Please let me
know if there is a proper one.

BRs,
Rex
> >  create mode 100644
> > Documentation/devicetree/bindings/soc/mediatek/mediatek,wdma.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rdma.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rdma.yaml
> > new file mode 100644
> > index 000000000000..4fe704e476dc
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rdma.yaml
> > @@ -0,0 +1,85 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/media/mediatek,mdp3-rdma.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uZLfyeWNg$
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYTQJNp6g$
> >  
> > +
> > +title: Mediatek Read Direct Memory Access
> > +
> > +maintainers:
> > +  - Matthias Brugger <matthias.bgg@gmail.com>
> > +  - Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> > +
> > +description: |
> > +  Mediatek Read Direct Memory Access(RDMA) component used to do
> > read DMA.
> > +  It contains one line buffer to store the sufficient pixel data,
> > and
> > +  must be siblings to the central MMSYS_CONFIG node.
> > +  For a description of the MMSYS_CONFIG binding, see
> > +  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.ya
> > ml
> > +  for details.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: mediatek,mt8183-mdp3-rdma
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  mediatek,gce-client-reg:
> > +    $ref: '/schemas/types.yaml#/definitions/phandle-array'
> > +    items:
> > +      items:
> > +        - description: phandle of GCE
> > +        - description: GCE subsys id
> > +        - description: register offset
> > +        - description: register size
> > +    description: The register of client driver can be configured
> > by gce with
> > +      4 arguments defined in this property. Each GCE subsys id is
> > mapping to
> > +      a client defined in the header include/dt-
> > bindings/gce/<chip>-gce.h.
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    items:
> > +      - description: RDMA clock
> > +      - description: RSZ clock
> > +
> > +  iommus:
> > +    maxItems: 1
> > +
> > +  mboxes:
> > +    items:
> > +      - description: used for 1st data pipe from RDMA
> > +      - description: used for 2nd data pipe from RDMA
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - mediatek,gce-client-reg
> > +  - power-domains
> > +  - clocks
> > +  - iommus
> > +  - mboxes
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8183-clk.h>
> > +    #include <dt-bindings/gce/mt8183-gce.h>
> > +    #include <dt-bindings/power/mt8183-power.h>
> > +    #include <dt-bindings/memory/mt8183-larb-port.h>
> > +
> > +    mdp3_rdma0: mdp3-rdma0@14001000 {
> > +      compatible = "mediatek,mt8183-mdp3-rdma";
> > +      reg = <0x14001000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x1000
> > 0x1000>;
> > +      power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
> > +      clocks = <&mmsys CLK_MM_MDP_RDMA0>,
> > +               <&mmsys CLK_MM_MDP_RSZ1>;
> > +      iommus = <&iommu>;
> > +      mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST>,
> > +               <&gce 21 CMDQ_THR_PRIO_LOWEST>;
> > +    };
> > diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rsz.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rsz.yaml
> > new file mode 100644
> > index 000000000000..7b566fbec3c0
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > rsz.yaml
> > @@ -0,0 +1,65 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/media/mediatek,mdp3-rsz.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYLnzDDrw$
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYTQJNp6g$
> >  
> > +
> > +title: Mediatek Resizer
> > +
> > +maintainers:
> > +  - Matthias Brugger <matthias.bgg@gmail.com>
> > +  - Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> > +
> > +description: |
> > +  One of Media Data Path 3 (MDP3) components used to do frame
> > resizing.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - mediatek,mt8183-mdp3-rsz
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  mediatek,gce-client-reg:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    items:
> > +      items:
> > +        - description: phandle of GCE
> > +        - description: GCE subsys id
> > +        - description: register offset
> > +        - description: register size
> > +    description: The register of client driver can be configured
> > by gce with
> > +      4 arguments defined in this property. Each GCE subsys id is
> > mapping to
> > +      a client defined in the header include/dt-
> > bindings/gce/<chip>-gce.h.
> > +
> > +  clocks:
> > +    minItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - mediatek,gce-client-reg
> > +  - clocks
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8183-clk.h>
> > +    #include <dt-bindings/gce/mt8183-gce.h>
> > +
> > +    mdp3_rsz0: mdp3-rsz0@14003000 {
> > +      compatible = "mediatek,mt8183-mdp3-rsz";
> > +      reg = <0x14003000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000
> > 0x1000>;
> > +      clocks = <&mmsys CLK_MM_MDP_RSZ0>;
> > +    };
> > +
> > +    mdp3_rsz1: mdp3-rsz1@14004000 {
> > +      compatible = "mediatek,mt8183-mdp3-rsz";
> > +      reg = <0x14004000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x4000
> > 0x1000>;
> > +      clocks = <&mmsys CLK_MM_MDP_RSZ1>;
> > +    };
> > diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > wrot.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > wrot.yaml
> > new file mode 100644
> > index 000000000000..5481d4e43315
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-
> > wrot.yaml
> > @@ -0,0 +1,70 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/media/mediatek,mdp3-wrot.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uY3xwuR8Q$
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYTQJNp6g$
> >  
> > +
> > +title: Mediatek Write DMA with Rotation
> > +
> > +maintainers:
> > +  - Matthias Brugger <matthias.bgg@gmail.com>
> > +  - Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> > +
> > +description: |
> > +  One of Media Data Path 3 (MDP3) components used to write DMA
> > with frame rotation.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - mediatek,mt8183-mdp3-wrot
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  mediatek,gce-client-reg:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    items:
> > +      items:
> > +        - description: phandle of GCE
> > +        - description: GCE subsys id
> > +        - description: register offset
> > +        - description: register size
> > +    description: The register of client driver can be configured
> > by gce with
> > +      4 arguments defined in this property. Each GCE subsys id is
> > mapping to
> > +      a client defined in the header include/dt-
> > bindings/gce/<chip>-gce.h.
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    minItems: 1
> > +
> > +  iommus:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - mediatek,gce-client-reg
> > +  - power-domains
> > +  - clocks
> > +  - iommus
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8183-clk.h>
> > +    #include <dt-bindings/gce/mt8183-gce.h>
> > +    #include <dt-bindings/power/mt8183-power.h>
> > +    #include <dt-bindings/memory/mt8183-larb-port.h>
> > +
> > +    mdp3_wrot0: mdp3-wrot0@14005000 {
> > +      compatible = "mediatek,mt8183-mdp3-wrot";
> > +      reg = <0x14005000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x5000
> > 0x1000>;
> > +      power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
> > +      clocks = <&mmsys CLK_MM_MDP_WROT0>;
> > +      iommus = <&iommu>;
> > +    };
> > diff --git
> > a/Documentation/devicetree/bindings/soc/mediatek/mediatek,ccorr.yam
> > l
> > b/Documentation/devicetree/bindings/soc/mediatek/mediatek,ccorr.yam
> > l
> > new file mode 100644
> > index 000000000000..20d02cb4ad0a
> > --- /dev/null
> > +++
> > b/Documentation/devicetree/bindings/soc/mediatek/mediatek,ccorr.yam
> > l
> > @@ -0,0 +1,58 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/soc/mediatek/mediatek,ccorr.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1ua8l4S1Sg$
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYTQJNp6g$
> >  
> > +
> > +title: Mediatek color correction
> > +
> > +maintainers:
> > +  - Matthias Brugger <matthias.bgg@gmail.com>
> > +  - Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> > +
> > +description: |
> > +  Mediatek color correction with 3X3 matrix.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - mediatek,mt8183-mdp3-ccorr
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  mediatek,gce-client-reg:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    items:
> > +      items:
> > +        - description: phandle of GCE
> > +        - description: GCE subsys id
> > +        - description: register offset
> > +        - description: register size
> > +    description: The register of client driver can be configured
> > by gce with
> > +      4 arguments defined in this property. Each GCE subsys id is
> > mapping to
> > +      a client defined in the header include/dt-
> > bindings/gce/<chip>-gce.h.
> > +
> > +  clocks:
> > +    minItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - mediatek,gce-client-reg
> > +  - clocks
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8183-clk.h>
> > +    #include <dt-bindings/gce/mt8183-gce.h>
> > +
> > +    mdp3_ccorr: mdp3-ccorr@1401c000 {
> > +      compatible = "mediatek,mt8183-mdp3-ccorr";
> > +      reg = <0x1401c000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0xc000
> > 0x1000>;
> > +      clocks = <&mmsys CLK_MM_MDP_CCORR>;
> > +    };
> > diff --git
> > a/Documentation/devicetree/bindings/soc/mediatek/mediatek,wdma.yaml
> > b/Documentation/devicetree/bindings/soc/mediatek/mediatek,wdma.yaml
> > new file mode 100644
> > index 000000000000..102d9e163139
> > --- /dev/null
> > +++
> > b/Documentation/devicetree/bindings/soc/mediatek/mediatek,wdma.yaml
> > @@ -0,0 +1,71 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/soc/mediatek/mediatek,wdma.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uZKK4h1GQ$
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!2ZNvgvI6qeg4eNprUQ48EiE4ubRcbyNYwEQQ7zr4Nyzt6FxZ0Zs8e8ae-Puy-aLskT378PmjEAnr6ceJ1uYTQJNp6g$
> >  
> > +
> > +title: Mediatek Write Direct Memory Access
> > +
> > +maintainers:
> > +  - Matthias Brugger <matthias.bgg@gmail.com>
> > +  - Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> > +
> > +description: |
> > +  Mediatek Write Direct Memory Access(WDMA) component used to
> > write
> > +  the data into DMA.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - mediatek,mt8183-mdp3-wdma
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  mediatek,gce-client-reg:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    items:
> > +      items:
> > +        - description: phandle of GCE
> > +        - description: GCE subsys id
> > +        - description: register offset
> > +        - description: register size
> > +    description: The register of client driver can be configured
> > by gce with
> > +      4 arguments defined in this property. Each GCE subsys id is
> > mapping to
> > +      a client defined in the header include/dt-
> > bindings/gce/<chip>-gce.h.
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    minItems: 1
> > +
> > +  iommus:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - mediatek,gce-client-reg
> > +  - power-domains
> > +  - clocks
> > +  - iommus
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8183-clk.h>
> > +    #include <dt-bindings/gce/mt8183-gce.h>
> > +    #include <dt-bindings/power/mt8183-power.h>
> > +    #include <dt-bindings/memory/mt8183-larb-port.h>
> > +
> > +    mdp3_wdma: mdp3-wdma@14006000 {
> > +      compatible = "mediatek,mt8183-mdp3-wdma";
> > +      reg = <0x14006000 0x1000>;
> > +      mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x6000
> > 0x1000>;
> > +      power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
> > +      clocks = <&mmsys CLK_MM_MDP_WDMA0>;
> > +      iommus = <&iommu>;
> > +    };