From nobody Wed Dec 31 04:52:42 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC1BEC4332F for ; Tue, 7 Nov 2023 15:56:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343626AbjKGP4m (ORCPT ); Tue, 7 Nov 2023 10:56:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343759AbjKGP4T (ORCPT ); Tue, 7 Nov 2023 10:56:19 -0500 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F3DB4EEC; Tue, 7 Nov 2023 07:50:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=hugovil.com ; s=x; h=Subject:Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Cc:To :From:subject:date:message-id:reply-to; bh=r0TYUpnREGJ0KanYJfwzlHomepGsTlvaq5o9zs4sWSs=; b=vdwCz6yQyVDp/gzLzzMkGyqrBP FXNkjbLi1mhe3jlBKl24nPernItP1XoDYFZIIwicL1eL5IBUF/nkDS2YFX9OxzFnHa5HO5Q8m/Mf7 j8Wdf9LV24O7zAtE0zWgNCPsoUZWfjCXfsQdSE5v3TzCRql+QZHtUTFoMhcvEaqBmJMs=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:41044 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1r0OLi-0007bH-VP; Tue, 07 Nov 2023 10:50:43 -0500 From: Hugo Villeneuve To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Cc: hugo@hugovil.com, Hugo Villeneuve , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Date: Tue, 7 Nov 2023 10:50:40 -0500 Message-Id: <20231107155040.1644169-1-hugo@hugovil.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com Subject: [PATCH v2] arm64: dts: imx8mn-var-som-symphony: add vcc supply for PCA9534 X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.hugovil.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Hugo Villeneuve The following warning is shown when probing device: pca953x 1-0020: supply vcc not found, using dummy regulator Define a new fixed 3.3v regulator for carrier board peripherals, enabled by mosfet switch Q2 after the SOM_3V3 supply rises (no software control). Add this new regulator as vcc supply to the PCA9534 to silence the warning. Signed-off-by: Hugo Villeneuve --- Changes for V2: - add peripherals regulator and update commit message for Q2 mosfet. .../boot/dts/freescale/imx8mn-var-som-symphony.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/ar= ch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts index a7a57442cb81..a6b94d1957c9 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts @@ -57,6 +57,15 @@ led { linux,default-trigger =3D "heartbeat"; }; }; + + /* Peripherals supply, enabled by Q2 after SOM_3V3 rises. */ + reg_per_3v3: regulator-peripheral-3v3 { + compatible =3D "regulator-fixed"; + regulator-name =3D "per_3v3"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-always-on; + }; }; =20 ðphy { @@ -79,6 +88,7 @@ pca9534: gpio@20 { interrupts =3D <7 IRQ_TYPE_EDGE_FALLING>; #gpio-cells =3D <2>; wakeup-source; + vcc-supply =3D <®_per_3v3>; =20 /* USB 3.0 OTG (usbotg1) / SATA port switch, set to USB 3.0 */ usb3-sata-sel-hog { base-commit: be3ca57cfb777ad820c6659d52e60bbdd36bf5ff --=20 2.39.2