From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 46234C28B28 for ; Wed, 12 Mar 2025 12:31:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Y47pWkgiW4vdrLoWTONlIC94VXuaHtO4AGXkfs1whwE=; b=sLfB8Md4dnj9mwgkvbUcMyOLv7 gVNjTN1u6DZSZBx24bo8q73xbwCQ3YWl7rZ6ERAYQ91gHS3QwlkEoQnz7ZUiSIl+W8UyXA1fJHWzf Is6/aN+RMUxfOQyECoxussqO77ZtEozvE+ADAsAxWRrIv67dSyZ4uT5UUryMPgw2utkFZGWHvnCdc 2xDR1maVy8uzBUWVuRl69+Cy/ZQePNKfpOgjvwoZq5CrYNHd7VmUarTdaHjCiD0tsSy23t/7Qdpzw R61gQGGNPwEtg8z4sZzi6UqdwWf4YcgqjrHqmIzG5pq2NvlIQhcOOyhNkPwh+KsIpfP1H1u54k9Ih UwFRsCJQ==; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250312_043453_035018_386A06B4 X-CRM114-Status: GOOD ( 19.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 12/03/2025 12:10, Christopher Obbard wrote: > Hi Krzysztof, > > On Wed, 12 Mar 2025 at 09:56, Krzysztof Kozlowski wrote: >> >> On 11/03/2025 20:15, Christopher Obbard wrote: >>> Hi Dmitry, >>> >>> On Tue, 11 Mar 2025 at 19:58, Dmitry Baryshkov 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. > > Thanks for confirming. It is all clear now. > > Consider this patch dropped from my side. > > For reference, I am working on updating initramfs generation tools in > Debian/Fedora to include the required interconnect modules. Currently > the interconnect drivers are built as modules in these distros, but > are not included in the initrd. That is where my confusion initially > stemmed from. Sure. This defconfig is anyway for us - developers, not for the distros to use directly. Distros have much bigger configs and use almost everything as module. Best regards, Krzysztof