linux-kernel - Re: [PATCH 1/8] dt-bindings: clock: qcom: Add X1P42100 video clock controller

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Message-ID: <fxzm4767ged6hikpblsnh3xzec4qm7dzyfnds7m2ljedhj6n46@zkm7zxz3oo73>
Date: Tue, 27 Jan 2026 22:34:32 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jagadeesh Kona <quic_jkona@...cinc.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Ajit Pandey <ajit.pandey@....qualcomm.com>,
        Imran Shaik <imran.shaik@....qualcomm.com>,
        Taniya Das <taniya.das@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] dt-bindings: clock: qcom: Add X1P42100 video clock
 controller

On Wed, Jan 28, 2026 at 12:56:32AM +0530, Jagadeesh Kona wrote:
> X1P42100 video clock controller has most clocks same as SM8650,
> but it also has few additional clocks and resets. Add device
> tree bindings for the video clock controller on Qualcomm
> X1P42100 platform by defining these additional clocks and resets
> on top of SM8650.
> 
> Signed-off-by: Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>
> ---
>  .../bindings/clock/qcom,sm8450-videocc.yaml         |  2 ++
>  include/dt-bindings/clock/qcom,x1p42100-videocc.h   | 21 +++++++++++++++++++++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
> index e6beebd6a36ee1ce213a816f60df8a76fa5c44d6..e8bf3fcad3fabc4f3b7e8e692c6c634d1aed9605 100644
> --- a/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
> +++ b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
> @@ -30,6 +30,7 @@ properties:
>        - qcom,sm8650-videocc
>        - qcom,sm8750-videocc
>        - qcom,x1e80100-videocc
> +      - qcom,x1p42100-videocc
>  
>    clocks:
>      items:
> @@ -67,6 +68,7 @@ allOf:
>                - qcom,sm8450-videocc
>                - qcom,sm8550-videocc
>                - qcom,sm8750-videocc
> +              - qcom,x1p42100-videocc
>      then:
>        required:
>          - required-opps
> diff --git a/include/dt-bindings/clock/qcom,x1p42100-videocc.h b/include/dt-bindings/clock/qcom,x1p42100-videocc.h
> new file mode 100644
> index 0000000000000000000000000000000000000000..eb6c9b7264f8cbced7cfa0001903238ffa168431
> --- /dev/null
> +++ b/include/dt-bindings/clock/qcom,x1p42100-videocc.h
> @@ -0,0 +1,21 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +
> +#ifndef _DT_BINDINGS_CLK_QCOM_VIDEO_CC_X1P42100_H
> +#define _DT_BINDINGS_CLK_QCOM_VIDEO_CC_X1P42100_H
> +
> +#include "qcom,sm8650-videocc.h"
> +
> +/* X1P42100 introduces below new clocks and resets compared to SM8650 */

And then someone introduces new clocks or resets into SM8650 bindings
and this gets busted. Please extend the existing header.

> +
> +/* VIDEO_CC clocks */
> +#define VIDEO_CC_MVS0_BSE_CLK					17
> +#define VIDEO_CC_MVS0_BSE_CLK_SRC				18
> +#define VIDEO_CC_MVS0_BSE_DIV4_DIV_CLK_SRC			19
> +
> +/* VIDEO_CC resets */
> +#define VIDEO_CC_MVS0_BSE_BCR					8
> +
> +#endif
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry