From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C89F64C61B; Mon, 12 Feb 2024 21:14:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707772474; cv=none; b=IKQ7uJI5Uok5FNvtZBMwhKBh5KZ1ojE+zWWbfpSB+Wr46TkxQcnUR00xs6YN+C/45l0SDVcv1ydfjw5ZNsRkliJeJ9gSMNeUD8CctTlzCu1diFbFowC/A12T3qcl5GEip2ionor50Bi105ZpzysYqLjHPTbYJLJvoCJOuVFYtxw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707772474; c=relaxed/simple; bh=80X+hPGUzYEZW/Xn2iZaEatHM4CwENsoX6mZolqSReU=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=M72f+FnoftC0X3013zx+1ZRnpso9aKTplib+eB87GZdpaz/uWqKXxxswhH2F9Na1vVe7qSwtLpowEbhlstvR8mWz0CTexdubYv4OzNN9rNrflTr5Fi5TUxT6HP2e97vsAmqCtSkgm97Nd+CRqq1HQVxryDTNC55p3bOT2i/aJ8I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OIG6HQkD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OIG6HQkD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0079CC433F1; Mon, 12 Feb 2024 21:14:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707772474; bh=80X+hPGUzYEZW/Xn2iZaEatHM4CwENsoX6mZolqSReU=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=OIG6HQkDsRFKsaKTH2l9YwvzZafznt0uHVGfr1SwdIJcyaugt3MKWGn0svsqItltv 7VwZDijjgSd7Y1MRH977eCCwxc/8eL8zep4G0w9EOgMhQJEu4eNlA5q+nRwqqvYUHi czqMxGqk2rV7SCmIwjxdM4VchMYu5SYm7/xN2b/ubz3A8YLHG9czrs9UcKh+7MpXvv 8IH5J/XphPJG8xigphGxf1L1fYP+awTsPTky7yjl6bzbKBe4qK+q+PZspZEPDYLDP9 +wEBxYDULXy0mr/K36tIKvVlGXjv6nc7B8qLQz5U2lkKozS3Ulj6z32vko1WkqCfze u1aLQF/m/sgmg== Date: Mon, 12 Feb 2024 15:14:32 -0600 From: Bjorn Helgaas To: Konrad Dybcio Cc: Bjorn Andersson , Manivannan Sadhasivam , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Philipp Zabel , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: Re: [PATCH v2 1/3] PCI: qcom: reshuffle reset logic in 2_7_0 .init Message-ID: <20240212211432.GA1145620@bhelgaas> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240210-topic-8280_pcie-v2-1-1cef4b606883@linaro.org> Would be nice to have a hint in the subject line about what this does. Also capitalize to match the others ("PCI: qcom: "). On Sat, Feb 10, 2024 at 06:10:05PM +0100, Konrad Dybcio wrote: > At least on SC8280XP, if the PCIe reset is asserted, the corresponding > AUX_CLK will be stuck at 'off'. This has not been an issue so far, > since the reset is both left de-asserted by the previous boot stages > and the driver only toggles it briefly in .init. > > As part of the upcoming suspend prodecure however, the reset will be > held asserted. s/prodecure/procedure/ > Assert the reset (which may end up being a NOP in some cases) and > de-assert it back *before* turning on the clocks in preparation for > introducing RC powerdown and reinitialization. Bjorn