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Hi, Shu-hsiang:
On Wed, 2024-10-09 at 19:15 +0800, Shu-hsiang Yang wrote:
> 1. Add camera isp7x module device document
> 2. Add camera interface device document
>
> Signed-off-by: Shu-hsiang Yang <Shu-hsiang.Yang@mediatek.com>
> ---
[snip]
> +...
> diff --git a/Documentation/devicetree/bindings/media/mediatek/mediatek,camisp.yaml b/Documentation/devicetree/bindings/media/mediatek/mediatek,camisp.yaml
> new file mode 100644
> index 000000000000..ce378ddbd5bd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek/mediatek,camisp.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (c) 2024 MediaTek Inc.
> +
> +%YAML 1.2
> +---
> +$id: https://urldefense.com/v3/__http://devicetree.org/schemas/media/mediatek/mediatek,camisp.yaml*__;Iw!!CTRNKA9wMg0ARbw!jkHmqtxOst6Dv88RaE-ss9VaxKxFo4FuPl1smXTEnkiijU7jS9nkYGBPoLr8g4Ji2dZpb_7LHWrLpIyu2qoPg8zy568$
> +$schema: https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!jkHmqtxOst6Dv88RaE-ss9VaxKxFo4FuPl1smXTEnkiijU7jS9nkYGBPoLr8g4Ji2dZpb_7LHWrLpIyu2qoPfKVBdTw$
> +
> +title: The camisp unit of MediaTek ISP system
> +
> +maintainers:
> + - Shu-hsiang Yang <shu-hsiang.yang@mediatek.com>
> + - Shun-yi Wang <shun-yi.wang@mediatek.com>
> + - Teddy Chen <teddy.chen@mediatek.com>
> +
> +description:
> + MediaTek camisp is the ISP auxiliary unit for camera system in MediaTek SoC.
> +
> +properties:
> + compatible:
> + const: mediatek,camisp
> +
> + "#address-cells":
> + const: 2
> +
> + "#size-cells":
> + const: 2
> +
> + reg:
> + items:
> + minItems: 2
> + maxItems: 4
> + minItems: 1
> + maxItems: 2
> +
> + reg-names:
> + maxItems: 1
> +
> + power-domains:
> + maxItems: 1
> +
> + mediatek,scp:
> + description: MediaTek co-process unit for ISP system
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - power-domains
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/power/mediatek,mt8188-power.h>
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + camisp: camisp@16000000 {
In mt8188.dtsi [1], there is already a clock controller at address 16000000.
It should not have two device at the same address.
It should have one device which has multiple function.
mmsys controller [2] is a syscon (system controller) device which has multiple function.
It has a main driver (mmsys driver) [3] and two sub driver: clock driver [4] and display driver [5].
The main driver would probe the sub drivers.
Refer to mmsys device to refine the device at address 16000000.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/mediatek/mt8188.dtsi?h=v6.12-rc7#n1847
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml?h=v6.12-rc7
[3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/soc/mediatek/mtk-mmsys.c?h=v6.12-rc7
[4] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/mediatek/clk-mt8188-vdo0.c?h=v6.12-rc7
[5] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/mediatek/mtk_drm_drv.c?h=v6.12-rc7
Regards,
CK
> + compatible = "mediatek,camisp";
> + reg = <0 0x16000000 0 0x1000>;
> + reg-names = "base";
> + mediatek,scp = <&scp_dual>;
> + power-domains = <&spm MT8188_POWER_DOMAIN_CAM_MAIN>;
> + };
> + };
> +
</pre>
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