linux-kernel - Re: [PATCH] arm64: defconfig: Change CONFIG_SM_TCSRCC

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Message-ID: <37f54b76-a274-4ce2-aaa9-88ba0eb84199@oss.qualcomm.com>
Date: Fri, 17 Oct 2025 10:46:43 +0530
From: Taniya Das <taniya.das@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>, linux-arm-msm@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org,
        Ajit Pandey <ajit.pandey@....qualcomm.com>,
        Imran Shaik <imran.shaik@....qualcomm.com>,
        Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: defconfig: Change CONFIG_SM_TCSRCC_8750 from m to
 y



On 10/17/2025 10:00 AM, Krzysztof Kozlowski wrote:
> On 16/10/2025 20:53, Taniya Das wrote:
>> The TCSR clock controller is required  during boot to provide the ref
>> clocks to the UFS controller. Setting CONFIG_SM_TCSRCC_8750 to y ensures
>> the UFS driver successfully probe and initialize the device.
>>
>> Without this change, the UFS subsystem fails to mount as a usable file
>> system during boot.
> 
> 
> That's not what I observed. UFS works fine, especially that it is a
> module, so no, this is not a desired change and explanation is not only
> insufficient but actually incorrect.
> 

Krzysztof, on Pakala MTP we are observing the below issue and it
requires the module of tscrcc to be loaded explicitly. This patch also
aligns to how it is on all other targets.

/soc@...hy@...0000: Failed to get clk index: 2 ret: -517
[   10.496570] ufshcd-qcom 1d84000.ufs: freq-table-hz property not specified
[   10.503660] ufshcd-qcom 1d84000.ufs: ufshcd_populate_vreg: Unable to
find vdd-hba-supply regulator, assuming enabled
[   10.514548] ufshcd-qcom 1d84000.ufs: ufshcd_populate_vreg: Unable to
find vccq2-supply regulator, assuming enabled
[   10.565955] platform 1d80000.phy: deferred probe pending: (reason
unknown)
[   10.573078] platform 1d84000.ufs: deferred probe pending:
ufshcd-qcom: ufshcd_pltfrm_init() failed

-- 
Thanks,
Taniya Das