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 403FCCCF9E3 for ; Tue, 11 Nov 2025 07:11:45 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=nhDPWcHQwhbMDsBD0V/t6hKlH/MXgCs801GiP87Z/q0=; b=DykkymbvZuCe6x/x26hcipGe15 l66fSYdS26d7bGpO4/6tqmEdQgoAwLAgpKzovpvQueHX20QnXXmj30b6rFMC7ULS1/e0kjDcueqLZ qKVtVfXRfa+vL1gaZDbact9g+IX+geCM381WSvW4NW0p0PDu6/XuKys5yb8zVzpUMxWO7Yx1Q/vFj +J4+j4vy/lfVOJfZWNmYn6tANGlKIJ0CEQW6gtzGeD3b4HuZzKtbyXVDW0CznEzhJnYeIYdFENbVS iNDTR8Pn7wvPeC00rATKI+L5H5R97teEA2JdNj19VVQ+MYzFdr3gawzDLiO/vNSeDb3er2w1kcuZs NuDmBQ9g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIiXS-00000006f6V-16wh; Tue, 11 Nov 2025 07:11:38 +0000 Received: from mail-m16.yeah.net ([220.197.32.17]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIiXP-00000006f63-11PS for linux-arm-kernel@lists.infradead.org; Tue, 11 Nov 2025 07:11:37 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yeah.net; s=s110527; h=Date:From:To:Subject:Message-ID:MIME-Version: Content-Type; bh=nhDPWcHQwhbMDsBD0V/t6hKlH/MXgCs801GiP87Z/q0=; b=ODO/kGMqFbRqTC0v8r+qERLvSla7r6KNWJ77O80rPbP6codeYkA5nzwEg4h+O4 gh5LhHWzo8deItXNDdhj4Nqr62RI+0yVSQEb/y1Hm34fRiLb0kURqkYZZC+BKkYR FcWKgs7vfgrFpVkC2XwQHSgRdbNtUezUJ3sSaFHwsJHxg= Received: from dragon (unknown []) by gzsmtp1 (Coremail) with SMTP id Mc8vCgBXvWOT4RJpfZLkAA--.5262S3; Tue, 11 Nov 2025 15:11:17 +0800 (CST) Date: Tue, 11 Nov 2025 15:11:14 +0800 From: Shawn Guo To: Richard Zhu Cc: frank.li@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, bhelgaas@google.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 01/11] arm64: dts: imx95-15x15-evk: Add supports-clkreq property to PCIe M.2 port Message-ID: References: <20251015030428.2980427-1-hongxing.zhu@nxp.com> <20251015030428.2980427-2-hongxing.zhu@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251015030428.2980427-2-hongxing.zhu@nxp.com> X-CM-TRANSID: Mc8vCgBXvWOT4RJpfZLkAA--.5262S3 X-Coremail-Antispam: 1Uf129KBjvJXoW7Wr1kCFy3ur1DXFy8Cr4kWFg_yoW8Jr4rpa y8CFZ7Jr1xGF4fGanFqFyrKr98ta93JF4Uur1jgryUKrW5CF97tr48Crs3Wr4Y9w4fCw4f ZF10vwnaqrWYvaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07U3EfrUUUUU= X-Originating-IP: [117.80.155.87] X-CM-SenderInfo: pvkd40hjxrjqh1hdxhhqhw/1tbiOBV84WkS4ZUOIwAA3S X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251110_231135_676171_BCEDBA35 X-CRM114-Status: GOOD ( 14.89 ) 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 Wed, Oct 15, 2025 at 11:04:18AM +0800, Richard Zhu wrote: > According to PCIe r6.1, sec 5.5.1. > > The following rules define how the L1.1 and L1.2 substates are entered: > Both the Upstream and Downstream Ports must monitor the logical state of > the CLKREQ# signal. > > Typical implement is using open drain, which connect RC's clkreq# to > EP's clkreq# together and pull up clkreq#. > > imx95-15x15-evk matches this requirement, so add supports-clkreq to > allow PCIe device enter ASPM L1 Sub-State. > > Signed-off-by: Richard Zhu > --- > arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts > index 148243470dd4a..3ee032c154fa3 100644 > --- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts > +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts > @@ -556,6 +556,7 @@ &pcie0 { > pinctrl-names = "default"; > reset-gpio = <&gpio5 13 GPIO_ACTIVE_LOW>; > vpcie-supply = <®_m2_pwr>; > + supports-clkreq; Is binding updated for this property? Shawn > status = "okay"; > }; > > -- > 2.37.1 >