linux-kernel - Re: [PATCH v3 2/4] media: dt-bindings: add MT8188 AIE

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Message-ID: <de173b50912e294a866963aa37c9a9b5f974bf96.camel@mediatek.com>
Date: Thu, 26 Dec 2024 03:41:52 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "robh@...nel.org" <robh@...nel.org>, "mchehab@...nel.org"
	<mchehab@...nel.org>, "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
	Bo Kong (孔波) <Bo.Kong@...iatek.com>
CC: "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, "AngeloGioacchino Del
 Regno" <angelogioacchino.delregno@...labora.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "conor+dt@...nel.org"
	<conor+dt@...nel.org>, "linux-mediatek@...ts.infradead.org"
	<linux-mediatek@...ts.infradead.org>, "matthias.bgg@...il.com"
	<matthias.bgg@...il.com>
Subject: Re: [PATCH v3 2/4] media: dt-bindings: add MT8188 AIE

On Wed, 2024-12-25 at 17:00 +0800, bo.kong wrote:
> From: Bo Kong <Bo.Kong@...iatek.com>
> 
> Add YAML device tree bindings for MT8188 AIE.
> 
> Signed-off-by: Bo Kong <Bo.Kong@...iatek.com>
> ---
> 
> Changes in v3:
> none
> 
> Changes in v2:
> 1. Fix coding style
> ---
>  .../bindings/media/mediatek,mt8188-aie.yaml   | 97 +++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml b/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
> new file mode 100644
> index 000000000000..63dd720ef6ec
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
> @@ -0,0 +1,97 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: https://urldefense.com/v3/__http://devicetree.org/schemas/media/mediatek-aie.yaml*__;Iw!!CTRNKA9wMg0ARbw!mOYiAQ4L35rPpndZaS91tTcFgaV6wdNoQ9CsIK5IH6Hpjt5SjsdcXX4Z0--LVVUOz4WCe_eOfyRJmJH9$ 
> +$schema: https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!mOYiAQ4L35rPpndZaS91tTcFgaV6wdNoQ9CsIK5IH6Hpjt5SjsdcXX4Z0--LVVUOz4WCe_eOf2v9y9FU$ 
> +
> +title: The AI Engine Unit of MediaTek Camera System
> +
> +maintainers:
> +  - Bo Kong <bo.kong@...iatek.com>
> +
> +description:
> +  AIE(AI Engine) is one of the units in mt8188 ISP which
> +  provides hardware accelerated face detection function,
> +  it can detect different sizes of faces in a raw image.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: mediatek,mt8188-aie
> +
> +  reg:
> +    maxItems: 1
> +    description: Physical base address and length of the register space.
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  mediatek,larb:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Must contain the local arbiters in the current SoCs, see
> +      Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.yaml
> +      for details.
> +
> +  iommus:
> +    maxItems: 4
> +    description:
> +      Points to the respective IOMMU block with master port as argument, see
> +      Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
> +      Ports are according to the HW.
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: clock for imgsys main ipe
> +      - description: clock for ipe fdvt
> +      - description: clock for ipe smi larb12
> +      - description: clock for ipe top
> +
> +  clock-names:
> +    items:
> +      - const: img_ipe
> +      - const: ipe_fdvt
> +      - const: ipe_smi_larb12
> +      - const: ipe_top
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - iommus
> +  - power-domains
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/memory/mediatek,mt8188-memory-port.h>
> +    #include <dt-bindings/power/mediatek,mt8188-power.h>
> +    #include <dt-bindings/clock/mediatek,mt8188-clk.h>
> +    aie@...10000 {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +      compatible = "mediatek,mt8188-aie";
> +      reg = <0 0x15310000 0 0x1000>;
> +      interrupts = <GIC_SPI 787 IRQ_TYPE_LEVEL_HIGH 0>;
> +      mediatek,larb = <&larb12>;

larb is processed by iommu device, so it's not necessary to point to larb device here.

Regards,
CK

> +      iommus = <&vpp_iommu M4U_PORT_L12_FDVT_RDA_0>,
> +               <&vpp_iommu M4U_PORT_L12_FDVT_RDB_0>,
> +               <&vpp_iommu M4U_PORT_L12_FDVT_WRA_0>,
> +               <&vpp_iommu M4U_PORT_L12_FDVT_WRB_0>;
> +      power-domains = <&spm MT8188_POWER_DOMAIN_IPE>;
> +      clocks = <&imgsys CLK_IMGSYS_MAIN_IPE>,
> +               <&ipesys CLK_IPE_FDVT>,
> +               <&ipesys CLK_IPE_SMI_LARB12>,
> +               <&ipesys CLK_IPESYS_TOP>;
> +      clock-names = "img_ipe",
> +                    "ipe_fdvt",
> +                    "ipe_smi_larb12",
> +                    "ipe_top";
> +    };