From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m16.yeah.net (mail-m16.yeah.net [1.95.21.16]) (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 314C3281341; Tue, 11 Nov 2025 07:37:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=1.95.21.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762846665; cv=none; b=DquNHm/qhBuqdEkG+YdLgJeXNkirXMuSsMy0I0iqbj0hAq29FfkdwFw7uQtHFmcqxQaj1mcWp6IacRx4R9uicuJvfO4GmsVlhWoAxalSxk4xmL+9FerLDGtXKyaQDSvsqZPlSfitLwPa9dH3dNZzTTF67Ru3mKFLjb+RKfTNSIE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762846665; c=relaxed/simple; bh=TMfjCCp9Vl1C+w/PH2HESmcjrVpVqcg2gmYMGqanOuo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MjYjHZrr9aASl5IBLtW1CM4sZFTCXej0+ilrkNpzdiU2uNVbiJUEswKeOT+NZRbZvP8wmtcoh6BC6LL4cvL+zRRmsiriVveDi4wSWkOSiWdsEw0iJqHAsgvnmfdSrHz33H/mzLyYH531r+0ptosdkiD04MHxAlHh46D6vBJIUTc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net; spf=pass smtp.mailfrom=yeah.net; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b=PWqLNck9; arc=none smtp.client-ip=1.95.21.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yeah.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b="PWqLNck9" 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=jSCFmAGYJ/6nn3X8y2BV2I473qQwTQBsOPiyb3X/GTY=; b=PWqLNck9KGbRwkR/sES7ueZrnA5LZNT3OVPkUI2EVxEc86cKHKBRnIx0UPASlk 9MW/rnmblg29iXEi5+dXOGvlkhWhYNW2H1SiGaWvEKBcWbQGD2zCHdJXOhInI5r8 3LGLOWVtKwJIxovzNMFo6iSjfjrenzjP8NeQPbQYeJ9z8= Received: from dragon (unknown []) by gzsmtp2 (Coremail) with SMTP id Ms8vCgAn_s2h5xJpBSnNAQ--.5214S3; Tue, 11 Nov 2025 15:37:07 +0800 (CST) Date: Tue, 11 Nov 2025 15:37:05 +0800 From: Shawn Guo To: Richard Zhu Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, frank.li@nxp.com, s.hauer@pengutronix.de, festevam@gmail.com, kernel@pengutronix.de, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/7] arm64: dts: imx8dxl-evk: Add vpcie3v3aux regulator for PCIe M.2 connector Message-ID: References: <20251024073152.902735-1-hongxing.zhu@nxp.com> <20251024073152.902735-2-hongxing.zhu@nxp.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20251024073152.902735-2-hongxing.zhu@nxp.com> X-CM-TRANSID:Ms8vCgAn_s2h5xJpBSnNAQ--.5214S3 X-Coremail-Antispam: 1Uf129KBjvdXoWrZw1DXw47Cr1ftrWUJF47Arb_yoWkKrgEya s7Ka45tFZ5Ar92qas8Ga1kX342939rKrWfXr18Xr4kGF9rZayvkrykGa4rWr13CrWIkrZx CrsrJ3ZxXr9xCjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUU2jg7UUUUU== X-CM-SenderInfo: pvkd40hjxrjqh1hdxhhqhw/1tbiOAMBZmkS56Mm3gAA3b On Fri, Oct 24, 2025 at 03:31:46PM +0800, Richard Zhu wrote: > Refer to PCI Express M.2 Specification r5.1 sec3.1.1 Power Sources and > Grounds. > > PCI Express M.2 Socket 1 utilizes a 3.3 V power source. The voltage > source, 3.3 V, is expected to be available during the system’s > stand-by/suspend state to support wake event processing on the > communications card. > > Add vpcie3v3aux regulator to let this 3.3 V power source always on for > PCIe M.2 Key E connector on i.MX8DXL EVK board. > > Signed-off-by: Richard Zhu > --- > arch/arm64/boot/dts/freescale/imx8dxl-evk.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts > index 25a77cac6f0b5..7704dba9e37c0 100644 > --- a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts > +++ b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts > @@ -649,6 +649,7 @@ &pcie0 { > pinctrl-names = "default"; > reset-gpio = <&lsio_gpio4 0 GPIO_ACTIVE_LOW>; > vpcie-supply = <®_pcieb>; > + vpcie3v3aux-supply = <®_pcieb>; Is it a documented binding? Shawn > status = "okay"; > }; > > -- > 2.37.1 >