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SubjectRe: [PATCH v2 1/3] dt-bindings: mediatek: add vdosys1 RDMA definition for mt8195
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On 09/05/2022 06:43, Rex-BC Chen wrote:
> From: "Nancy.Lin" <nancy.lin@mediatek.com>
>
> Add vdosys1 RDMA definition.
>
> Signed-off-by: Nancy.Lin <nancy.lin@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
> .../display/mediatek/mediatek,mdp-rdma.yaml | 94 +++++++++++++++++++
> 1 file changed, 94 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,mdp-rdma.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,mdp-rdma.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,mdp-rdma.yaml
> new file mode 100644
> index 000000000000..ca31accb0a95
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mdp-rdma.yaml
> @@ -0,0 +1,94 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,mdp-rdma.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek MDP RDMA
> +
> +maintainers:
> + - Chun-Kuang Hu <chunkuang.hu@kernel.org>
> + - Philipp Zabel <p.zabel@pengutronix.de>
> +
> +description:
> + The MediaTek MDP RDMA stands for Read Direct Memory Access.
> + It provides real time data to the back-end panel driver, such as DSI,
> + DPI and DP_INTF.
> + It contains one line buffer to store the sufficient pixel data.
> + RDMA device node 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.yaml for details.
> +
> +properties:
> + compatible:
> + oneOf:

oneOf is not needed

> + - items:

items not needed, you have only one item.

> + - const: mediatek,mt8195-vdo1-rdma
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + power-domains:
> + description: A phandle and PM domain specifier as defined by bindings of
> + the power controller specified by phandle. See
> + Documentation/devicetree/bindings/power/power-domain.yaml for details.

Skip description, it's obvious. Instead maxItems.

> +
> + clocks:
> + items:
> + - description: RDMA Clock
> +
> + iommus:
> + description:
> + This property should point to the respective IOMMU block with master port as argument,
> + see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.

Skip description, it's obvious. Instead maxItems.

> +
> + mediatek,gce-client-reg:
> + description:
> + The register of display function block to be set by gce. There are 4 arguments,
> + such as gce node, subsys id, offset and register size. The subsys id that is
> + mapping to the register of display function blocks is defined in the gce header
> + include/include/dt-bindings/gce/<chip>-gce.h of each chips.

Double "include" in the path.

> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + items:
> + items:
> + - description: phandle of GCE
> + - description: GCE subsys id
> + - description: register offset
> + - description: register size
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - power-domains
> + - clocks
> + - iommus
> + - mediatek,gce-client-reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/clock/mt8195-clk.h>
> + #include <dt-bindings/power/mt8195-power.h>
> + #include <dt-bindings/gce/mt8195-gce.h>
> + #include <dt-bindings/memory/mt8195-memory-port.h>
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + vdo1_rdma0: mdp-rdma@1c104000 {

Generic node name. dma-controller (if it does not conflict with
dma-common.yaml schema)?

> + compatible = "mediatek,mt8195-vdo1-rdma";
> + reg = <0 0x1c104000 0 0x1000>;
> + interrupts = <GIC_SPI 495 IRQ_TYPE_LEVEL_HIGH 0>;
> + clocks = <&vdosys1 CLK_VDO1_MDP_RDMA0>;
> + power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
> + iommus = <&iommu_vdo M4U_PORT_L2_MDP_RDMA0>;
> + mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0x4000 0x1000>;
> + };
> + };


Best regards,
Krzysztof

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