linux-kernel - Re: [PATCH v6 1/5] dt-bindings: mmc: Add dll-presets values for HS400 and HS200 modes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1fc9ac39-231b-4fce-a354-22a21d126363@kernel.org>
Date: Mon, 15 Dec 2025 13:11:06 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ram Prakash Gupta <quic_rampraka@...cinc.com>,
 Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>,
 Adrian Hunter <adrian.hunter@...el.com>
Cc: linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 dmitry.baryshkov@....qualcomm.com, quic_pragalla@...cinc.com,
 quic_sayalil@...cinc.com, quic_nitirawa@...cinc.com,
 quic_bhaskarv@...cinc.com, kernel@....qualcomm.com,
 Sachin Gupta <quic_sachgupt@...cinc.com>
Subject: Re: [PATCH v6 1/5] dt-bindings: mmc: Add dll-presets values for HS400
 and HS200 modes

On 15/12/2025 13:06, Krzysztof Kozlowski wrote:
> On 15/12/2025 13:00, Ram Prakash Gupta wrote:
>> From: Sachin Gupta <quic_sachgupt@...cinc.com>
>>
>> Document the 'dll-presets' property for MMC device tree bindings.
>> The 'dll-presets' property defines the DLL configurations for HS400
>> and HS200 modes.
>>
>> QC SoCs can have 0 to 4 SDHCI instances, and each one may need
>> different tuning.
>>
>> Signed-off-by: Sachin Gupta <quic_sachgupt@...cinc.com>
>> Signed-off-by: Ram Prakash Gupta <quic_rampraka@...cinc.com>
>> ---
>>  Documentation/devicetree/bindings/mmc/sdhci-msm.yaml | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml b/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
>> index 938be8228d66..a1a16e6e12ce 100644
>> --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
>> +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
>> @@ -140,6 +140,11 @@ properties:
>>      $ref: /schemas/types.yaml#/definitions/uint32
>>      description: platform specific settings for DLL_CONFIG reg.
>>  
>> +  qcom,dll-presets:
>> +    maxItems: 10
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    description: platform specific settings for DLL registers.
> 
> 
> So look at your DTS - this is clearly incomplete now. So obvious. I
> don't understand why you were hiding the DTS change, you just make
> review more difficult.
> 
> Anyway, your DTS says you replace some other DLL properties and nothing
> in the binding or commit msg explains that. Neither the reason nor the
> impact.
> 

Plus it looks like you are adding some meaning to the entries, judging
by the DTS. DTS suggested something here is e.g. DLL_CONFIG, so that
meaning - including different modes - needs description in the schema in
items.

Best regards,
Krzysztof