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 6E499CCFA18 for ; Tue, 11 Nov 2025 07:37:29 +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-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jSCFmAGYJ/6nn3X8y2BV2I473qQwTQBsOPiyb3X/GTY=; b=ECha9UeRVLGOAietaFLFnZ9VMW Q5LhTtQONXBcRNgrB5kvMUHBvRnxa4FCkMf/DIJjC4Gi9Ox17GcdAjyzJiNn56YQYnS+DwWwSq/9W 4Mf/IJWRp1F21ZroXS1eUm9EGq9hPht7XW8djuoGF/FUswK0ir308SMGmjybh82ZtmSXamCcYAOvV TK5kbTQxriZkbtz7EkhMsANmMt0MUaNNnzlM425JlyPeNpQLkM4PL91FJnl13iki0LiFuuXDjhMvg eYrM5o6C+CYytmozjHxXBF3RpCsUMz8TSqfkxnuxiaPyps18oiwwwcca21e+ELwwGczHL7eJaf1y0 yui79ILg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIiwN-00000006hhl-3r8u; Tue, 11 Nov 2025 07:37:23 +0000 Received: from mail-m16.yeah.net ([1.95.21.16]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIiwK-00000006hgR-0dDq for linux-arm-kernel@lists.infradead.org; Tue, 11 Nov 2025 07:37:22 +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=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> 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-Originating-IP: [117.80.155.87] X-CM-SenderInfo: pvkd40hjxrjqh1hdxhhqhw/1tbiOAMBZmkS56Mm3gAA3b X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251110_233721_243075_10F94205 X-CRM114-Status: GOOD ( 14.90 ) 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, 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 >