From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from AM0PR83CU005.outbound.protection.outlook.com (mail-westeuropeazon11020106.outbound.protection.outlook.com [52.101.69.106]) (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 F22D23AC0C1; Wed, 1 Apr 2026 08:28:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.69.106 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775032126; cv=fail; b=jE91d23MHkFQ5ZnhVLTKW6YTm8NFsirmuRNMup16yBxzkHPT3aGU84f7CCW/Vi9e27q0kgOlu3sNznageGv2fTtXcNGixc9LrnSfvMih28tSjmlJpxOX1hPnZub2WkXXbT86lZwpjexnHCqHV54DqGk9nifjIYf2txvojXRmNNc= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775032126; c=relaxed/simple; bh=rq+kLm/Ma1o/ZcwqsuPRaHuQjAuFipqNlxobGIEG5/M=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=s86NZRmKQ/Sq+OZBe+fIrkXz2DWf2HJfrU2wcIa+rTQkMVTYpgWoHO42e8CbGQrluEUVebpSVSZXFBRD6vTpwln31+zWeqstiDJg+TlWWTnr5tthz4W5/6T2DUmQmzoIbBKJIHzlvdsyDM3b6hRZYMYMO3xo7CwqCMO/5l0RWgQ= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kontron.de; spf=pass smtp.mailfrom=kontron.de; dkim=pass (2048-bit key) header.d=kontron.de header.i=@kontron.de header.b=j27EHHY9; arc=fail smtp.client-ip=52.101.69.106 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kontron.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kontron.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kontron.de header.i=@kontron.de header.b="j27EHHY9" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=QTnCJvvO6EdkNCviO5balrc29/e8ESOdepUodPKGU/MTWy8jh2TSFQWPSfUQm6VsJa3N/N2Js7psm7GUJcx8CgX0s04dn1j1ANdyiF0zqrj2RlkHAQh5jf9J4W3Aa+/p3lPi+IiwFX2gkEZ+qQNkjYlQLAq/ic1+ZrvQ/MuDB4fBwBoRCxPZSwpMHULdH6d69yeAvVt4Fq15caEata7p7047JtHA17w0Ent+MCZqNOmqhSBMjqoD2BklBCfe1H72iSaWVUFMbMe1SyysImCDKQLVB6k4atmyRVKPAt4IQUvt4mjQgcCsK34qFHRYr3vgGFoRI7ZEI9rMxGjM5DcF8A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=JqH9sKLfHhmcoANcuySDjn5w/Mvt+c/3TgdLER1ogH8=; b=qE/FjnLLPNPRCMk3V6+VSXtCFPMioM0zsYQN9svemfZPuXrFXCyL3NCZBOirrf1ZGyQbn8ZHyDkJlWhcg5+561CevZyazbj6q5Y8zatHQb8M7AjYg0l6f+XsW7YLbMSNghsGE5MTkumqafcjbMU+znfhrnCk00DabTIn5gyQDYrUEU76ShW6miZOylZsKdYuSGs3suYQ7NVASFSi9fqoc1FRKFkGtP+Rb9rzuXIHYxhwDv66JDobSN2nU5GcHj17RlWabijnQhtoa/b3bbUUaeYh1CnWKfzbe0lqcypOm/aL3wFfSjbRURxkfc1qiOEmJgMBBYVkqxG6hzd3Tx9p/w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=kontron.de; dmarc=pass action=none header.from=kontron.de; dkim=pass header.d=kontron.de; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kontron.de; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=JqH9sKLfHhmcoANcuySDjn5w/Mvt+c/3TgdLER1ogH8=; b=j27EHHY9yt4RSfWyEgkDY6WelEEHdgGgSDvS4k3mBwlMMNt7c1l30eJl7FiFI7/HMazY16JaIxo/ULE5ErQ3HLoi+g7YAsFCiHyIYJRiWnAff9wj2H7euvkJAWGwDvHNpwE4DiFCDH09H397nZAizcRD+zMfTOodfXPm+PgOI8WVa8njbcnv4/liwkuNSEc027sY5dI7G7dARQ8vVkZpmfRhZcSN1GXcuMF8d+oJVvJzts13oNCLasyHmqbMmm9NEYsaWfs3WFe/gC71u2TtfiY9y0UcXd30/RnkgWACltx4ahZFzgpXG8Sfyq9WqW83VVPyUaGu2J5BwTY0VAQlog== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=kontron.de; Received: from AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:1fb::23) by AS2PR10MB7108.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:60f::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.17; Wed, 1 Apr 2026 08:28:37 +0000 Received: from AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM ([fe80::a276:4ad7:962:da22]) by AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM ([fe80::a276:4ad7:962:da22%3]) with mapi id 15.20.9769.016; Wed, 1 Apr 2026 08:28:37 +0000 Message-ID: <5fa79355-9dfe-4f8b-9eee-e3cd8aed932d@kontron.de> Date: Wed, 1 Apr 2026 10:28:36 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] arm64: dts: imx8m-kontron: Revert reading SD_VSEL signal To: "Peng Fan (OSS)" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan References: <20260401-imx8m-ldo5-v1-0-1b1c1381babd@nxp.com> Content-Language: en-US, de-DE From: Frieder Schrempf In-Reply-To: <20260401-imx8m-ldo5-v1-0-1b1c1381babd@nxp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: FR4P281CA0232.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:e9::13) To AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:1fb::23) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM9PR10MB4277:EE_|AS2PR10MB7108:EE_ X-MS-Office365-Filtering-Correlation-Id: c9f410a4-5781-459c-267d-08de8fc8ac08 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|366016|22082099003|18002099003|56012099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(7416014)(366016)(22082099003)(18002099003)(56012099003);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?QkRBcW1ZVTBkRDIrR2pzZkwrYjFBc0ZsUy80SE94YnZLWjZnbEJyNWJPYlFX?= =?utf-8?B?Um9mZXliTVRFSDg1enQwb2dla3A0eXF5M0E5OGF1YkduTW4xc3h3OFFIQmxk?= =?utf-8?B?c3c1ZGwrM1Y5S3psYldMbTNSK2l4anFzMUxtclhiNkhJa3VDUVYzcWRRNldm?= =?utf-8?B?YlJEaFEyVnV6NDJZOE52bmUvYytGQzl5eEIwVHRHaFJJaWRKZDFKZXdpTmtG?= =?utf-8?B?WkdTYm90TUg1N3dKTTllcDdDbUE5MWU4VXJFUmhUbFNrZkNsZ0IvUDkwZTBR?= =?utf-8?B?bG1pWEU0N2tFK1MvUWFzRDFwNXk3WWI0U2c5Y2M3ZU9wNmVUYTNKenNGR2ly?= =?utf-8?B?anV3SGFaMm4xNFVyalAwK2hzUFFTWFFER3FhK2RNRGtuWXVrb3hnRFJmNEJD?= =?utf-8?B?WG04LzhZNXg5OUdJQjVqRDJrK0E0dDBNZEdsOVd2cXhSeG9hZDZuVlBiYitS?= =?utf-8?B?RndqVGVFK0lZNFROTnNRbGNlajhYa0Rucy9VRFlvT0dLSHRuZ0ZSUUxNdmNx?= =?utf-8?B?T05hbWthbXViVjhwcmdrZllUcEVDOGJiQTRaUklIS3VaRkxIN2NHNStLMFNx?= =?utf-8?B?UEVWZGpMSGNBbEpuOTBETTJlaE9ZdVpGNGorT0U2ZkVPSDlOemp5TjN4RHJa?= =?utf-8?B?cVFhMmNac2FHcXJkVUVMNGFwVjFzQ2Z1T3EvS1MvMjZwRTJLNXlPeTdoaE83?= =?utf-8?B?K2pEaHplR0hhV1JHdVQ2eENxWmg1VDVYZ0RhL2hGQmQxdGc4dk5raEVaaEFI?= =?utf-8?B?bGVoWXlpSHBJdndQRUNzKzhULzhYTGpkbXgrM3hibkVnS1ZMUUdYZTVEREdI?= =?utf-8?B?VzVIbTdUWFlEQStmTE5abTVrb0lDWDB6TWtJYjdmRGQrM2FNbWh5OVl6SEdM?= =?utf-8?B?cXRHUnN6ckxnMmFPMHZYNE1hWHNuajkwbWwzMGtNdC9FTmFjN3pSRlI0TWVp?= =?utf-8?B?eE1PVFFoUDN5dXdOeDNKQUVkVjhZc1F0TEM0NUhOaG5sZjkzTUhUTnl2KzFC?= =?utf-8?B?UEppdmZJQVdyY3p0NkJtb3NSUEFhbUx6WW4yVWgwUWZRVXhOK1ZEcTJ4S1N2?= =?utf-8?B?dWpyaTJ5dXp6YU0yWCtlM3hUbmxOSUhHUC8yb0N3Lzk3Vm5jTDJsb3B3Q3Zm?= =?utf-8?B?QytFRFAyVWkxN2FpUlpDMWVneHd3WkNQcE5KSTFIQVhncUdObG4vRVBBY2ZZ?= =?utf-8?B?QjNQaGN5Wkk0N3BZdHp4WlZtRjFNUUM3dGtVM2pvd2tyMXVUWWVBOXVqSFl5?= =?utf-8?B?VHpTZ2F1MlVURkg4NW9ya2hGeWZjbjlXTEViZ3Q5T25UaUpqTmVkWGZRdTl6?= =?utf-8?B?cnhHZ2dqZU5rYVQ1VTJsMW5oTnhXc0ErV0JFT2hLN1g5WDJYeDJkbjIra3g0?= =?utf-8?B?OU4xNExySzZMU01IZzhNVkJUVEU3dHF5aVJCMDVjaUd0K2RCUGFBOTlkMXlm?= =?utf-8?B?WHgvUjBSWktzelQveDJ0T2JDUzN3dWhCL21JM0xmMTdJUS9YL0xEZUlqTWgw?= =?utf-8?B?Q3dVbFRnY1ZPZHBiazBJaWtVN1hYR1pYbnRBZE9TUnJRbGZPY2RNUTZmc1Jn?= =?utf-8?B?Q1k1TnBGcGY2MVNWQjVkeDJLRDRGMHRQa1JpQXdkZDFlU0NWMFRZTGRJOUYy?= =?utf-8?B?cW1FcDVVZGg2cVF6Sko2MGVuK1hGOVZmK0RPQWNGQ3orMnRwUnBSM2dTYTlT?= =?utf-8?B?Rm1SQlhOZHNRSDk2M1Z4YzF6WTBnem1Xdnl1aFdxbWVvazkvVGxpR3VVa1lx?= =?utf-8?B?eTVNNVVkRElXRWM4V0hjTkc0NVBDaTJqcHNQVy9TV0xzU3hLMnRRa3pSZGtZ?= =?utf-8?B?UzhiL29aMzZHTmNNN3l4THdLWnM4YWNEdFFCRmFkZlRhMEYzb3Q1UklMczZ3?= =?utf-8?B?aFlsRFkrVjBRdlVwWE94RXRwcTNKWS9KNDMwTElZS3JyMThiVDZWc2pwRHor?= =?utf-8?B?eFNrSXk5T1lOM0lUdHFEVWxXL2xuaGs1b2xOU0w4c0I4TnJBU0tOb2EyQ2M5?= =?utf-8?B?TTBPSVY3OE05MmlpQ2VnSWdBVTlmd2VQcTNFUTdmcitSUE5rZzByUWtscHo1?= =?utf-8?B?SjRzWjFsdERidGJmTWdqNXgzVWRPUStXRDRPTVhTak5rdmJiZmZhdkxFNlNJ?= =?utf-8?B?a29pOHNKQ1lMNUN1ZFJzcWdlbkdSbnNPV2ZHbndlRjQ0NXB6SUFjR2hnWHdX?= =?utf-8?B?ckhKZlFPVUdHTDNCVjJyRlpZUkM1emRqd2N6LzdLNUVGNmFMSU0rYythVjUy?= =?utf-8?B?K1Yxd1JqaTBZejdqeUt2SG5VcVJjQllmUS9lT25yaU9Lek4rVHByVi9HeFNQ?= =?utf-8?B?L3RRTWhwOVZyd2RqbmhmRFNrSW9RdklYMHBhNGlWL0o4UmFvOStLL0xKSVQr?= =?utf-8?Q?ltLoNsG74NVDvykI=3D?= X-OriginatorOrg: kontron.de X-MS-Exchange-CrossTenant-Network-Message-Id: c9f410a4-5781-459c-267d-08de8fc8ac08 X-MS-Exchange-CrossTenant-AuthSource: AM9PR10MB4277.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Apr 2026 08:28:37.6705 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8c9d3c97-3fd9-41c8-a2b1-646f3942daf1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Zy4u5zu+dNKDr6/ZxI9ueoZiwB1S2nlUelzqJrRiQZoAtGYY0u7QiHCt1YETe15SqyKFzeOF/0Z7W0zOVBcAxPNrhPYAec5LG9DWltWPFGA= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS2PR10MB7108 On 01.04.26 04:05, Peng Fan (OSS) wrote: > When MUX is configured as SDHC VSELECT, enabling SION is not able > to read back the SD_VSEL value. SION is used for force input path, > not to redirect the PAD value to GPIO(the other mux). > > This has been confirmed by reading i.MX8MP RTL. we have not check > i.MX8MM RTL, but it should be same. It seems like you are right and I misinterpreted the documentation and also misinterpreted my test results. So I was probably basing my work on wrong assumptions. > > Not sure whether need to add Fixes commit for the patches, just revert > patches. This was introduced in 6.15. I would like to add Fixes tags for the reverts. And can we add patches in this series that switch to GPIO control as done in [1] and also tag them as fixes? This should allow to read back the correct voltage from the regulator. > > For the U-Boot support, either drop vqmmc-supply or switch to use gpio > control to replace vselect control. > > And below patch should also be revisited. I think we can revert this, too. > commit 3ce6f4f943ddd9edc03e450a2a0d89cb025b165b > Author: Frieder Schrempf > Date: Wed Dec 18 16:27:27 2024 +0100 > > regulator: pca9450: Fix control register for LDO5 > > To supporting read back signal, need the MUX set as GPIO and support > in/out, not set mux as VSELECT. > > TBH: I have not test setting MUX as GPIO, anyway we need to fix DT. If we mux as GPIO, then we don't need to read back. I think in this case the best solution is the one used in [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=5245dc5 > > Signed-off-by: Peng Fan > --- > Peng Fan (2): > Revert "arm64: dts: imx8mm-kontron: Add support for reading SD_VSEL signal" > Revert "arm64: dts: imx8mp-kontron: Add support for reading SD_VSEL signal" > > arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts | 10 +++------- > arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi | 7 +++---- > arch/arm64/boot/dts/freescale/imx8mp-kontron-osm-s.dtsi | 7 +++---- > 3 files changed, 9 insertions(+), 15 deletions(-) > --- > base-commit: 3b058d1aeeeff27a7289529c4944291613b364e9 > change-id: 20260329-imx8m-ldo5-90e369066213 > > Best regards,