From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>,
Georgi Djakov <djakov@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] interconnect: qcom: Make important drivers default
Date: Fri, 15 May 2026 13:12:02 +0200 [thread overview]
Message-ID: <62f6c5fd-c952-4bcf-9125-c5fe92fca1dc@oss.qualcomm.com> (raw)
In-Reply-To: <720715a0-eb4f-4083-a67f-aa380e130d6c@oss.qualcomm.com>
On 5/15/26 1:11 PM, Krzysztof Kozlowski wrote:
> On 15/05/2026 12:54, Konrad Dybcio wrote:
>> On 4/29/26 5:09 PM, Krzysztof Kozlowski wrote:
>>> On 29/04/2026 11:23, Konrad Dybcio wrote:
>>>> On 4/28/26 7:32 PM, Krzysztof Kozlowski wrote:
>>>>> The interconnect drivers for Qualcomm SoC Network-on-Chip are covering a
>>>>> basic or fundamental SoC feature: bandwidth management between internal
>>>>> SoC blocks. SoC can boot without these, but power management or
>>>>> performance will be affected. These drivers do not represent any sort
>>>>> of buses visible to the board designers/configurators, thus they should
>>>>> be always enabled, regardless how SoC is used in the final board.
>>>>>
>>>>> Kernel configuration should not ask users choice of drivers when that
>>>>> choice is obvious and known to the developers that answer should be
>>>>> 'yes' or 'module'.
>>>>
>>>> I'd say let's make them all `default ARCH_QCOM` - all of these drivers
>>>> are required to boot (minus the OSM_L3 driver which is "only" highly
>>>> desired, so that your CPU's bus isn't heavily bottlenecked)
>>>
>>> So the few of them should not be a module? That's what you want to say?
>>
>> I'm saying that if you only want to shoot yourself in the foot and not
>> in the face, you can make them modules
>>
>> But the L3 driver is required to make the caches run at a reasonable
>> speed, so that they don't bottleneck the rest of the system's mem
>> bandwidth
>
> okidoki, so I will mark all as default built-in as you said, including
> the OSM_L3, based on your explanation.
Thanks!
Konrad
prev parent reply other threads:[~2026-05-15 11:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 17:32 [PATCH 0/3] interconnect: qcom: Some defconfig/defaults cleanups and improvements Krzysztof Kozlowski
2026-04-28 17:32 ` [PATCH 1/3] interconnect: qcom: Fix indentation Krzysztof Kozlowski
2026-04-28 17:32 ` [PATCH 2/3] interconnect: qcom: Restrict drivers per ARM/ARM64 Krzysztof Kozlowski
2026-04-29 9:21 ` Konrad Dybcio
2026-04-28 17:32 ` [PATCH 3/3] interconnect: qcom: Make important drivers default Krzysztof Kozlowski
2026-04-29 9:23 ` Konrad Dybcio
2026-04-29 15:09 ` Krzysztof Kozlowski
2026-05-15 10:54 ` Konrad Dybcio
2026-05-15 11:11 ` Krzysztof Kozlowski
2026-05-15 11:12 ` Konrad Dybcio [this message]
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