Re: [PATCH] arm64: defconfig: Enable Qualcomm interconnects as built-in

[Krzysztof Kozlowski <krzk@kernel.org>]

On 11/03/2025 20:15, Christopher Obbard wrote:
> Hi Dmitry,
> 
> On Tue, 11 Mar 2025 at 19:58, Dmitry Baryshkov <lumag@kernel.org> wrote:
>>
>> On Tue, Mar 11, 2025 at 07:10:06PM +0100, Christopher Obbard wrote:
>>> I sent this patch to start the discussion, some things I found:
>>>
>>> 1) Some interconnects are missing from arm defconfig. Should they be =y too ?
>>
>> No, unless those are required for the UART console.
> 
> OK, that makes sense. FWIW the cryptic (to me, at least) commit log on
> https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6eee808134ecf1c1093ff1ddfc056dc5e469d0c3
> made me think that the interconnects should be built-in on all devices.
> 
> Of course, the real problem here is RB3gen2 not actually finding the
> UFS/eMMC device due to no interconnect driver.
> Until now, I have been building that into the kernel. I will
> investigate instead shoving into the initrd (in both debian and
> fedora) which should solve my issue and render this patchset useless.

For Qualcomm platforms you are expected to always have initramfs, thus
you will have the modules for UFS/eMMC mounts. I don't understand the
problem which you were trying to solve.

The interconnects were built in *only* because of need for serial
console. Only.

Best regards,
Krzysztof