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 53C72C79F9E for ; Mon, 7 Sep 2026 06:12:00 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=wGPay9A9qATNnqppqo4cBmmU5rAf4n9Ajlzx3PExD4I=; b=yWQjC1fhmPH5JfCbmtOGubqp6c 3+pmGULVHQde4MKpKgZ3s0Q0NC1NpF/jn1TwBoQVlHEZ1bgu3BeX0AhW19aFVEqXn64dlNV+M1C+A 2wFd+gTvA/Osj1ivoZ6u7iDW2LlVYKLoELP3a5SNokhsagg6FrkG50I6HO2Ef5MW/pfhZUsIuc0an 4WCKxiTVCcRLEVRh0LG8mxrVVQhV8304NizU/Opoikw5mi8w7sopyqs1K/A0BVLq/DP9s7qPoMqs5 NSLenIEhnPudzv3RcIC/xmZW0SdTnwTc7mMNda3o3dDh/Tadfh1OISBqHS5u4JQQYAe4lQwGSWBcu D5hDrz8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3Sa9-00000005zkG-1UN7; Mon, 07 Sep 2026 06:11:53 +0000 Received: from mout-p-201.mailbox.org ([2001:67c:2050:0:465::201]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3Sa7-00000005zih-0ngF; Mon, 07 Sep 2026 06:11:52 +0000 Received: from smtp2.mailbox.org (smtp2.mailbox.org [10.196.197.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4hdcCh18ZLzMlCM; Mon, 07 Sep 2026 08:11:44 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1788761504; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wGPay9A9qATNnqppqo4cBmmU5rAf4n9Ajlzx3PExD4I=; b=n4+nhmX2YrLYMSIb6VrVETQrp1mPvyUkA4grZShT815sCyb9F7viXZqvAhM2VbXXG3To3y U6IfYoTQf5LvCviVaNSsT/L1l9dZknpKg4EhxFFsYPbmWM0jQo87e7kqxM5xJdZKplbk+C MpEkiftx9rTFlJmEYJueUii3KyDyk8EpZBiALcKDkzGNs4o1fi99GMvK4k7HVXJRH0w/QI +SVATSHDRUrtLIx/jNGN2WBpmI5DaT5z08XWmXoDoaPuEEP+hGNDrLnjunr91UTteeaIB4 mQpjp55cPP9Cf8nZA4rpv9BFp26QItE65sNP/z36cdzg0RxNw/eutwaL3hCRbA== Message-ID: <6c47f4e0-bcd3-4349-b8d6-a3889e08370d@mailbox.org> Date: Mon, 7 Sep 2026 08:02:20 +0200 MIME-Version: 1.0 Subject: Re: [PATCH v2 2/2] regulator: rpi-panel-v2: Add required vcc-supply support To: Shashank Maurya , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Broadcom internal kernel review list Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, venkata.valluru@oss.qualcomm.com, Jessica Zhang References: <20260907-rpi_reg-v2-0-0c59aa60d31f@oss.qualcomm.com> <20260907-rpi_reg-v2-2-0c59aa60d31f@oss.qualcomm.com> Content-Language: en-US From: Marek Vasut In-Reply-To: <20260907-rpi_reg-v2-2-0c59aa60d31f@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-MBO-RS-META: 3rtxcznpykrpkofi3z1e1xdqpbddtpj3 X-MBO-RS-ID: 7c43c5405db0c7d7e45 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260906_231151_381349_B925A94D X-CRM114-Status: UNSURE ( 6.90 ) X-CRM114-Notice: Please train this message. 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 9/7/26 7:46 AM, Shashank Maurya wrote: > The Raspberry Pi 7" touchscreen panel V2 MCU requires an external power > rail to be enabled before any I2C register access is attempted. Use > devm_regulator_get() to obtain the vcc supply and enable it at the > start of probe. Which power rail is this ?