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 2630BC36010 for ; Fri, 4 Apr 2025 09:44:01 +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=UkGhpRwbzS0VPnH1TZfEQLwmTd3JyghrN/O4RuEAQws=; b=uwhidSIplClmn89mBiVDVf4CMO XwCIsYMkp6mHGgIYBGiyqSu+sPpyrfegcr9R0TbsCNzi97bDjFx9WjfTbkBrzu3dQ09lAXrZGAm+I eWKJvIcxZdkS6VlYfq9IJree4XvS9yozboruKJudZ5K2yfyOGc/iAj4KoagXbjb8YtQvCUvsdfEbv m4QCrV2ddU7FGBGo4plB7WS0m4QgMspIz8c61McawD6UnF5Vhnf417IV3JSIZr3SSwnixHTrvATAH nl4UD9VghmQYnlZGoMOpkgTzihmTVh3p+ugGud+EGDqBdS1+exQjX0c+NRO0an/mYv5G1aDYRRA2E 6z0+EU2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1u0daY-0000000BJAl-3aeL; Fri, 04 Apr 2025 09:43:50 +0000 Received: from mail11.truemail.it ([2001:4b7e:0:8::81]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1u0dYW-0000000BIsR-0dfj for linux-arm-kernel@lists.infradead.org; Fri, 04 Apr 2025 09:41:46 +0000 Received: from francesco-nb (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id 95D6D1F99A; Fri, 4 Apr 2025 11:41:34 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1743759695; bh=UkGhpRwbzS0VPnH1TZfEQLwmTd3JyghrN/O4RuEAQws=; h=From:To:Subject; b=rM36v9PegNSof5+k1AZosOO95S82pCG12s5H1kAQn3tvMp8p/k7+sdFmwvoIcpEaS 1EbZnOU2ZfcaZqcfLtZBw8uKWB7YMw5CxqhqkjwD/e7B7W2cZVnHNtYcUxBN/yEDXT ZjK/wtatzssOVL3fNZiKn77aGX2jMRlVaBkDwFVpWd89csspEl8XuhjNxTbItmC4bN XnNLLOci4o3SmrFY7wT53qthCWduaaSpyRrnXwyXRROOkoX9MUkAd6fKmQpiQI3wuy czMP+IxxwbcgvQug+9IkreCSFe5iEU2j/cuPijpfjnhHE2xC07eRT2V1qybBr+9paj Kk3OTqjOrMhrA== Date: Fri, 4 Apr 2025 11:41:30 +0200 From: Francesco Dolcini To: Sherry Sun Cc: hongxing.zhu@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH V2 2/4] dt-bindings: imx6q-pcie: Add wake-gpios property Message-ID: <20250404094130.GA35433@francesco-nb> References: <20231213092850.1706042-1-sherry.sun@nxp.com> <20231213092850.1706042-3-sherry.sun@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231213092850.1706042-3-sherry.sun@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250404_024145_082753_0F6C196E X-CRM114-Status: GOOD ( 16.02 ) 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 Hello On Wed, Dec 13, 2023 at 05:28:48PM +0800, Sherry Sun wrote: > Add wake-gpios property that can be used to wakeup the host > processor. > > Signed-off-by: Sherry Sun > Reviewed-by: Richard Zhu > --- > Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > index 81bbb8728f0f..fba757d937e1 100644 > --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > @@ -72,6 +72,12 @@ properties: > L=operation state) (optional required). > type: boolean > > + wake-gpios: > + description: If present this property specifies WAKE# sideband signaling > + to implement wakeup functionality. This is an input GPIO pin for the Root > + Port mode here. Host drivers will wakeup the host using the IRQ > + corresponding to the passed GPIO. > + >From what I know it is possible to share the same WAKE# signal for multiple root ports. Is this going to work fine with this binding? Same question on the driver. We do have design exactly like that, so it's not a theoretical question. Francesco