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

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Message-ID: <838b9868-dd6f-4264-8947-d56f5a781946@oss.qualcomm.com>
Date: Wed, 4 Feb 2026 23:18:31 +0530
From: Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        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>
Cc: 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 1/28/2026 3:38 PM, Konrad Dybcio wrote:
> On 1/27/26 8:26 PM, 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>
>> ---
> 
> [...]
> 
>> +#include "qcom,sm8650-videocc.h"
>> +
>> +/* X1P42100 introduces below new clocks and resets compared to SM8650 */
>> +
>> +/* 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
> 
> I checked a number of platforms and the _BSE clocks are only present on
> Purwa, without any explanation in the corresponding docs.
> 
> What are they used for?
> 

These clocks are used to drive Bin stream engine, which is a sub-block of
video codec HW, which seems to be present only on Purwa.

Thanks,
Jagadeesh