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 6A535CCD1A2 for ; Tue, 21 Oct 2025 02:35:47 +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:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PNzc+bvZs3sRdIL+AA61mIkqDJONWoplDpxlP/4tg/w=; b=jWQcts0bKegmaMRUSm7hCRFhH5 vRuEUyCv/sBa5kGeR29YFSnf576Y1jO5VnUA5JNTbP33o+7cIXjycsiUAG56GCZmadoyKEPd/dSE1 c30vQ2a70zRTZggrStIb4/vHeKW+0y/gpm4D68H9CBaOqq2arH1qAxrDWLlIFsFM4eJBkXx2PxW2/ iddZ6JdXe+21+qJvHSnfWBYsooqPjqFEObMcrpBik96bpoqh8V2obLI7395wJVWRG7ypdj8tOPMAq x32NYr33Z53y9Kzm5vpO2M2AFJTDigXlwVTnbAdCOGBURSV9QMB4B84k2PHgkFV56RxcfD4SeVMs0 5wEFctCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vB2Dt-0000000Faob-1s22; Tue, 21 Oct 2025 02:35:41 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vB2Dp-0000000Fanr-0TOl; Tue, 21 Oct 2025 02:35:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 991A545721; Tue, 21 Oct 2025 02:35:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 691F2C4CEFB; Tue, 21 Oct 2025 02:35:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761014122; bh=fcgYpZ04ddq603NytX9c8WGJNEs2JUuEfL+syo1Wfkw=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=toPnH5Bh/mJooxw8Zd4IHJQTKNx85c+y4kWxyErwQ8ab3hBK524Q3Zpm7pHeGA2Ay sg6r+9K0OI2Uqp8pl8wXtB95OmdCY2kg4jRvjeOYEo0ZUdBhPFhuzT9RA/fa6fbZg8 6snyZsBUyJbmIHnvP2JECE5OwjKrukliYoEV/AlbZDmSudzsY8YrpNyA95Y6Xsi2Pm HMd8w9AbKRHC2gcJ420CRjPRfgH7D2PR6UDUceC0wJYRwXsNMala0cnUsheMLDLGJO ifxY5RWfqWaOS7L1mTkkz1EBfpmtInGtT8kznuH/eTxzeimTeT7y2ZtGs/6P/LWHrs OR1xI9Jp5UD9w== From: Manivannan Sadhasivam To: Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Heiko Stuebner , Shawn Lin , Kever Yang , Simon Xue , Niklas Cassel Cc: Damien Le Moal , Dragan Simic , FUKAUMI Naoki , Diederik de Haas , stable@vger.kernel.org, Manivannan Sadhasivam , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org In-Reply-To: <20251017163252.598812-2-cassel@kernel.org> References: <20251017163252.598812-2-cassel@kernel.org> Subject: Re: [PATCH v3] PCI: dw-rockchip: Prevent advertising L1 Substates support Message-Id: <176101411705.9573.17573145190800888773.b4-ty@kernel.org> Date: Tue, 21 Oct 2025 08:05:17 +0530 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251020_193537_186306_7C826E30 X-CRM114-Status: UNSURE ( 8.29 ) X-CRM114-Notice: Please train this message. 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 Fri, 17 Oct 2025 18:32:53 +0200, Niklas Cassel wrote: > The L1 substates support requires additional steps to work, namely: > -Proper handling of the CLKREQ# sideband signal. (It is mostly handled by > hardware, but software still needs to set the clkreq fields in the > PCIE_CLIENT_POWER_CON register to match the hardware implementation.) > -Program the frequency of the aux clock into the > DSP_PCIE_PL_AUX_CLK_FREQ_OFF register. (During L1 substates the core_clk > is turned off and the aux_clk is used instead.) > > [...] Applied, thanks! [1/1] PCI: dw-rockchip: Prevent advertising L1 Substates support commit: 40331c63e7901a2cc75ce6b5d24d50601efb833d Best regards, -- Manivannan Sadhasivam