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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZZmFI8GN; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE4B7606A32E; Tue, 10 Nov 2026 08:27:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZZmFI8GN Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34A511F0089F; Tue, 10 Nov 2026 08:27:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794299263; bh=z+n7GkR0pifD4/2RXbWX1AgFi3gIudpbZojDZ36ABEI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=ZZmFI8GNnAwgGco9NL4ZOKCriB1Tr+v9Rt7NPAbeQDLDiFDI+Dh2vLJEGXT7lqvOH HAZxaN+LTljukkAVoByTl4oLxcaSSK0WV7kGd6p5veY0hoH2pHSG45Mkw+QybHKM1+ FwKwv3YhebrGYlRCiqUFpit5EHNkFc1hKTWYHcfIaIPPnFIm8IzuicAi6Vf5GkS5Vq RsYDb0eqWHV6ByFO8dLr44IBNYFdThXlNqHOMXaA4nm+lVN44gY/n0FSUT3ZOJ5qqY 4FrWnY8t99X54Kj7g5O/a5wP7DlZck7U+EbSwvYwj5qgCK5a6f+9+ANNO7tNmK7fac NQbFDjJSnAD5g== Message-ID: Date: Tue, 10 Nov 2026 09:27:34 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 0/5] arm64: add Ambarella CV75 SoC support To: Arnd Bergmann , Brian Masney Cc: Long Zhao , Alexandre Belloni , soc@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Michael Turquette , Stephen Boyd , Jerome Brunet , linux-clk@vger.kernel.org, Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas , Will Deacon , devicetree@vger.kernel.org, Long Zhao , linux-kernel@vger.kernel.org, Linus Walleij References: <20261105-cv75-soc-v11-0-aa6ee0b2380d@ambarella.com> <179427375370.1061670.4050288038934218487.b4-review@b4> <20261110-interesting-hilarious-shark-2dbfc0@quoll> <7eeaf54d-2d7d-420c-a34e-eebc6dd0effe@app.fastmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/11/2026 09:23, Arnd Bergmann wrote: > On Tue, Nov 10, 2026, at 09:02, Krzysztof Kozlowski wrote: >> On Mon, Nov 09, 2026 at 08:22:33PM -0500, Brian Masney wrote: > >>> - I can then merge patches 3 and 5 into clk-pile. >> >> You will have code depending on non-exisitng ARCH_AMBARELLA symbol, but >> if that's fine for you then sure. >> >>> >>> - The DTS folks will take patch 4. >> >> The entire platform is for SoC tree. This sounds ok for >> me, but I am not sure if Arnd was merging pulls with >> dependencies. If not, then worse case the arm64 bits will >> wait a cycle. Anyway, I guess you can take clock bits. > > The way I usually handle new SoC families is to have > a separate branch for those beside the usual dt/driver/defconfig > updates, possibly for multiple new SoC families, and > possibly including required drivers. The idea is that > whatever we merge here has at least a chance to boot > into an initramfs with a console. > > If it can boot without the clk driver, the easiest way > would be to just keep the clk and arch/arm64 bits > separate. If the clk driver is required to boot, I would > suggest having a branch with the two clk patches that > can get merged (not applied) into both the clk tree > and the soc/newsoc branch to put the other patches > on top. This would make sure we only have each commit > once, but still have a clean history that includes the > driver in both sides. > There is a build dependency - DTS needs clock binding header - so it has to be second, unless the dependency is decoupled. Best regards, Krzysztof