linux-kernel - Re: [PATCH 1/8] media: dt-bindings: qcom-kaanapali-iris: Add kaanapali video codec binding

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Message-ID: <nuunkv3xwfes6wed5xf4re2efakndvvrfl4lhmenilkic4sjiy@5cb2f5ygegvm>
Date: Thu, 25 Sep 2025 22:25:36 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Vikash Garodia <vikash.garodia@....qualcomm.com>
Cc: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>, linux-arm-msm@...r.kernel.org,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Vishnu Reddy <quic_bvisredd@...cinc.com>
Subject: Re: [PATCH 1/8] media: dt-bindings: qcom-kaanapali-iris: Add
 kaanapali video codec binding

On Thu, Sep 25, 2025 at 04:44:39AM +0530, Vikash Garodia wrote:
> Kaanapali SOC brings in the new generation of video IP i.e iris4. When
> compared to previous generation, iris3x, it has,
> - separate power domains for stream and pixel processing hardware blocks
>   (bse and vpp).
> - additional power domain for apv codec.
> - power domains for individual pipes (VPPx).
> - different clocks and reset lines.
> 
> There are variants of this hardware, where only a single VPP pipe would
> be functional (VPP0), and APV may not be present. In such case, the
> hardware can be enabled without those 2 related power doamins, and
> corresponding clocks. This explains the min entries for power domains
> and clocks.
> Iommus include all the different stream-ids which can be possibly
> generated by vpu4 video hardware in both secure and non secure
> execution mode.
> 
> This patch depends on following patches
> https://lore.kernel.org/all/20250924-knp-interconnect-v1-1-4c822a72141c@oss.qualcomm.com/
> https://lore.kernel.org/all/20250924-knp-clk-v1-3-29b02b818782@oss.qualcomm.com/
> 
> Signed-off-by: Vikash Garodia <vikash.garodia@....qualcomm.com>
> ---
>  .../bindings/media/qcom,kaanapali-iris.yaml        | 236 +++++++++++++++++++++
>  1 file changed, 236 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/qcom,kaanapali-iris.yaml b/Documentation/devicetree/bindings/media/qcom,kaanapali-iris.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..f3528d514fe29771227bee5f156962fedb1ea9cd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/qcom,kaanapali-iris.yaml
> @@ -0,0 +1,236 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/qcom,kaanapali-iris.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm kaanapali iris video encode and decode accelerators
> +
> +maintainers:
> +  - Vikash Garodia <vikash.garodia@....qualcomm.com>
> +  - Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
> +
> +description:
> +  The iris video processing unit is a video encode and decode accelerator
> +  present on Qualcomm platforms.
> +
> +properties:
> +  compatible:
> +    const: qcom,kaanapali-iris
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  power-domains:
> +    minItems: 5
> +    maxItems: 7

You are sending bindings for a single device on a single platform. How
comes that it has min != max?

> +
> +  power-domain-names:
> +    items:
> +      - const: venus
> +      - const: vcodec0
> +      - const: vpp0
> +      - const: vpp1
> +      - const: apv
> +      - const: mxc
> +      - const: mmcx
> +
> +  clocks:
> +    minItems: 8
> +    maxItems: 10

And here.

> +
> +  clock-names:
> +    items:
> +      - const: iface
> +      - const: core
> +      - const: vcodec0_core
> +      - const: iface1
> +      - const: core_freerun
> +      - const: vcodec0_core_freerun
> +      - const: vcodec_bse
> +      - const: vcodec_vpp0
> +      - const: vcodec_vpp1
> +      - const: vcodec_apv
> +

-- 
With best wishes
Dmitry