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Date: Wed, 19 Jan 2022 07:44:53 -0600
From: Rob Herring <robh@...nel.org>
To: Irui Wang <irui.wang@...iatek.com>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>,
Tzung-Bi Shih <tzungbi@...omium.org>,
Alexandre Courbot <acourbot@...omium.org>,
Tiffany Lin <tiffany.lin@...iatek.com>,
Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Tomasz Figa <tfiga@...gle.com>, Yong Wu <yong.wu@...iatek.com>,
angelogioacchino.delregno@...labora.com,
Hsin-Yi Wang <hsinyi@...omium.org>,
Maoguang Meng <maoguang.meng@...iatek.com>,
Longfei Wang <longfei.wang@...iatek.com>,
Yunfei Dong <yunfei.dong@...iatek.com>,
Fritz Koenig <frkoenig@...omium.org>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
srv_heupstream@...iatek.com, linux-mediatek@...ts.infradead.org,
Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v2, 03/10] dt-bindings: media: mtk-vcodec: Adds encoder
cores dt-bindings for mt8195
On Mon, Jan 17, 2022 at 08:06:08PM +0800, Irui Wang wrote:
> Adds encoder cores dt-bindings for mt8195
>
> Signed-off-by: Irui Wang <irui.wang@...iatek.com>
> ---
> .../media/mediatek,vcodec-encoder-core.yaml | 214 ++++++++++++++++++
> 1 file changed, 214 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/mediatek,vcodec-encoder-core.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder-core.yaml b/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder-core.yaml
> new file mode 100644
> index 000000000000..d1e7bfa50bce
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder-core.yaml
> @@ -0,0 +1,214 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/media/mediatek,vcodec-encoder-core.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Mediatek Video Encoder Accelerator With Multi Core
> +
> +maintainers:
> + - Irui Wang <irui.wang@...iatek.com>
> +
> +description: |
> + Mediatek Video Encode is the video encode hardware present in Mediatek
> + SoCs which supports high resolution encoding functionalities. Required
> + parent and child device node.
> +
> +properties:
> + compatible:
> + const: mediatek,mt8195-vcodec-enc
> +
> + mediatek,scp:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + maxItems: 1
'phandle' is already 1 item. Drop.
> + description: |
> + The node of system control processor (SCP), using
> + the remoteproc & rpmsg framework.
> +
> + iommus:
> + minItems: 1
> + maxItems: 32
> + description: |
> + List of the hardware port in respective IOMMU block for current Socs.
> + Refer to bindings/iommu/mediatek,iommu.yaml.
> +
> + dma-ranges:
> + maxItems: 1
> + description: |
> + Describes the physical address space of IOMMU maps to memory.
> +
> + "#address-cells":
> + const: 1
> +
> + "#size-cells":
> + const: 1
> +
> + ranges: true
> +
> +# Required child node:
> +patternProperties:
> + "venc_core0@...20000":
Address should generally not be defined in the node name schema:
'^venc-core0@'
Though I think you should also drop the '0' here. The unit-address is
enough to distinguish each instance. Then the schemas for each child
node can be combined.
> + type: object
> +
> + properties:
> + compatible:
> + const: mediatek,mtk-venc-core0
Is the programming model for each core the same, but just different
codecs implemented? I'd just add a property to indicate which codec if
that's not discoverable.
> +
> + reg:
> + maxItems: 1
> +
> + iommus:
> + minItems: 1
> + maxItems: 32
> + description: |
> + List of the hardware port in respective IOMMU block for current Socs.
> + Refer to bindings/iommu/mediatek,iommu.yaml.
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-names:
> + items:
> + - const: MT_CG_VENC0
The name is supposed to be local to the instance reflecting what the
clock drives rather than a top-level or clock controller name. Lowercase
is also the norm. Given there's only 1 clock, I'd just drop the name.
> +
> + assigned-clocks:
> + maxItems: 1
> +
> + assigned-clock-parents:
> + maxItems: 1
These are always allowed and shouldn't be required.
> +
> + power-domains:
> + maxItems: 1
> +
> + required:
> + - compatible
> + - reg
> + - iommus
> + - interrupts
> + - clocks
> + - clock-names
> + - assigned-clocks
> + - assigned-clock-parents
> + - power-domains
> +
> + additionalProperties: false
> +
> + "venc_core1@...20000":
> + type: object
> +
> + properties:
> + compatible:
> + const: mediatek,mtk-venc-core1
> +
> + reg:
> + maxItems: 1
> +
> + iommus:
> + minItems: 1
> + maxItems: 32
> + description: |
> + List of the hardware port in respective IOMMU block for current Socs.
> + Refer to bindings/iommu/mediatek,iommu.yaml.
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-names:
> + items:
> + - const: MT_CG_VENC1
> +
> + assigned-clocks:
> + maxItems: 1
> +
> + assigned-clock-parents:
> + maxItems: 1
> +
> + power-domains:
> + maxItems: 1
> +
> + required:
> + - compatible
> + - reg
> + - iommus
> + - interrupts
> + - clocks
> + - clock-names
> + - assigned-clocks
> + - assigned-clock-parents
> + - power-domains
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - mediatek,scp
> + - iommus
> + - dma-ranges
> + - ranges
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/memory/mt8195-memory-port.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/clock/mt8195-clk.h>
> + #include <dt-bindings/power/mt8195-power.h>
> +
> + venc {
> + compatible = "mediatek,mt8195-vcodec-enc";
> + mediatek,scp = <&scp>;
> + iommus = <&iommu_vdo M4U_PORT_L19_VENC_RCPU>;
> + dma-ranges = <0x1 0x0 0x0 0x40000000 0x0 0xfff00000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + venc_core0@...20000 {
> + compatible = "mediatek,mtk-venc-core0";
> + reg = <0x1a020000 0x10000>;
> + iommus = <&iommu_vdo M4U_PORT_L19_VENC_RCPU>,
> + <&iommu_vdo M4U_PORT_L19_VENC_REC>,
> + <&iommu_vdo M4U_PORT_L19_VENC_BSDMA>,
> + <&iommu_vdo M4U_PORT_L19_VENC_SV_COMV>,
> + <&iommu_vdo M4U_PORT_L19_VENC_RD_COMV>,
> + <&iommu_vdo M4U_PORT_L19_VENC_CUR_LUMA>,
> + <&iommu_vdo M4U_PORT_L19_VENC_CUR_CHROMA>,
> + <&iommu_vdo M4U_PORT_L19_VENC_REF_LUMA>,
> + <&iommu_vdo M4U_PORT_L19_VENC_REF_CHROMA>;
> + interrupts = <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH 0>;
> + clocks = <&vencsys CLK_VENC_VENC>;
> + clock-names = "MT_CG_VENC0";
> + assigned-clocks = <&topckgen CLK_TOP_VENC>;
> + assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL_D4>;
> + power-domains = <&spm MT8195_POWER_DOMAIN_VENC>;
> + };
> +
> + venc_core1@...20000 {
> + compatible = "mediatek,mtk-venc-core1";
> + reg = <0x1b020000 0x10000>;
> + iommus = <&iommu_vpp M4U_PORT_L20_VENC_RCPU>,
> + <&iommu_vpp M4U_PORT_L20_VENC_REC>,
> + <&iommu_vpp M4U_PORT_L20_VENC_BSDMA>,
> + <&iommu_vpp M4U_PORT_L20_VENC_SV_COMV>,
> + <&iommu_vpp M4U_PORT_L20_VENC_RD_COMV>,
> + <&iommu_vpp M4U_PORT_L20_VENC_CUR_LUMA>,
> + <&iommu_vpp M4U_PORT_L20_VENC_CUR_CHROMA>,
> + <&iommu_vpp M4U_PORT_L20_VENC_REF_LUMA>,
> + <&iommu_vpp M4U_PORT_L20_VENC_REF_CHROMA>;
> + interrupts = <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH 0>;
> + clocks = <&vencsys_core1 CLK_VENC_CORE1_VENC>;
> + clock-names = "MT_CG_VENC1";
> + assigned-clocks = <&topckgen CLK_TOP_VENC>;
> + assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL_D4>;
> + power-domains = <&spm MT8195_POWER_DOMAIN_VENC_CORE1>;
> + };
> + };
> --
> 2.18.0
>
>
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