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From: Imran Shaik <imran.shaik@oss.qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Cc: Bjorn Andersson <andersson@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>,
	Loic Poulain <loic.poulain@oss.qualcomm.com>,
	Ajit Pandey <ajit.pandey@oss.qualcomm.com>,
	Taniya Das <taniya.das@oss.qualcomm.com>,
	Jagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>,
	linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/5] dt-bindings: clock: qcom: Add Qualcomm Shikra Display clock controller
Date: Mon, 1 Jun 2026 08:35:36 +0530	[thread overview]
Message-ID: <3a623652-dfde-469e-af55-d4b54e3ee1d4@oss.qualcomm.com> (raw)
In-Reply-To: <pxio3igdcylbowpfiwb7r6s7q5spbo7g6i4iiun64zwn77v6xw@2kfvhzuhyxex>



On 29-05-2026 05:03 pm, Dmitry Baryshkov wrote:
> On Fri, May 29, 2026 at 02:53:29PM +0530, Imran Shaik wrote:
>>
>>
>> On 28-05-2026 07:14 pm, Dmitry Baryshkov wrote:
>>> On Thu, May 28, 2026 at 03:37:03PM +0530, Imran Shaik wrote:
>>>> The Qualcomm Shikra Display clock controller reuses the QCM2290 DISPCC,
>>>> but has minor differences with the number of input clocks. Update the
>>>> existing QCM2290 DISPCC bindings using conditional schema so that the
>>>> QCM2290 requirements remain unchanged while accommodating the additional
>>>> clocks required for Shikra.
>>>
>>> According to the IPcat, display clock controller also has (unused)
>>> inputs for the DSI1. Please extend the ABI for Agatti, then extend add
>>> Shikra.
>>>
>>
>> Sure, will add the DSI1 to Agatti as well. Since we are extending the ABI
>> for Agatti, I will remove the clock-names from the bindings
> 
> Why?
> 
>> and update the
>> DISPCC driver to use the indices-based approach instead.
>>
>> With these updates, the bindings, driver, and Agatti DT must be picked
>> together to avoid any functional issues or ABI breakage. I will explicitly
>> document these details in the commit message in the next series.
> 
> Well, no. DT comes through a separate tree anyway. Be sure that the
> updated driver works with the old DT. Also make sure to not change the
> order of the clocks, you can't break the ABI.
> 

Sure, I’ll keep the clock-names property and only append new clocks at 
the end without changing the current order.

Thanks,
Imran

  reply	other threads:[~2026-06-01  3:05 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-28 10:07 [PATCH v2 0/5] clk: qcom: Add DISPCC and GPUCC support for the Qualcomm Shikra SoC Imran Shaik
2026-05-28 10:07 ` [PATCH v2 1/5] clk: qcom: gcc-qcm2290: Drop modelling of critical clocks Imran Shaik
2026-05-28 13:22   ` Dmitry Baryshkov
2026-05-29  9:22     ` Imran Shaik
2026-05-29 11:31       ` Dmitry Baryshkov
2026-05-28 10:07 ` [PATCH v2 2/5] dt-bindings: clock: qcom: Add Qualcomm Shikra Display clock controller Imran Shaik
2026-05-28 13:44   ` Dmitry Baryshkov
2026-05-29  9:23     ` Imran Shaik
2026-05-29 11:33       ` Dmitry Baryshkov
2026-06-01  3:05         ` Imran Shaik [this message]
2026-05-30 11:33   ` Krzysztof Kozlowski
2026-05-28 10:07 ` [PATCH v2 3/5] dt-bindings: clock: qcom: Add Qualcomm Shikra GPU " Imran Shaik
2026-05-28 10:07 ` [PATCH v2 4/5] clk: qcom: dispcc-qcm2290: Add support for Qualcomm Shikra DISPCC Imran Shaik
2026-05-28 13:42   ` Dmitry Baryshkov
2026-05-29  9:23     ` Imran Shaik
2026-05-29 11:34       ` Dmitry Baryshkov
2026-06-01  3:36         ` Imran Shaik
2026-05-28 10:07 ` [PATCH v2 5/5] clk: qcom: Add support for Qualcomm GPU Clock Controller on Shikra Imran Shaik
2026-05-28 13:46   ` Dmitry Baryshkov
2026-05-29  9:24     ` Imran Shaik

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