From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from GVXPR05CU001.outbound.protection.outlook.com (mail-swedencentralazon11013038.outbound.protection.outlook.com [52.101.83.38]) (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 D1BAD4A64F2 for ; Fri, 11 Sep 2026 16:59:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.83.38 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789146007; cv=fail; b=V3+mMLODxDH2y54Awtb+6Ta/vJ4gfMhsbAiyCfMPfbAROOGa5mPh2SSb/+3qAwaj9ZzH1GK6yYw0eFPmpz2lGUCjXSKeXDfTnjtVDmYvJItkP520EnHiaAWE5E/CbuYhk0hKWckgMp4dV+n0l6T59yJstYPznRqOsfobcze5G7Q= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789146007; c=relaxed/simple; bh=CAgtc5clOmaQwypEWmxHi5QQSklAFdlqbEPV5eIh6Jw=; h=Date:From:To:Cc:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=g1SFSG3lJAHhHw0jfFwCYG3tFKU1xObaPa+j24IHY+VJroAqlYjO6iacpuwyyv/OfDDhN4ikaWqmGwi66nHlwBQm6eEwwLtQyN3iuhSUg0UjQvd25DgkDP55cgtmrw1wlCpY0YMSLneVjZcaRiEzmiLhhy4VkjPBD2yACcj2J6Q= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.nxp.com; spf=pass smtp.mailfrom=oss.nxp.com; dkim=pass (2048-bit key) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.b=W0Z25iZf; arc=fail smtp.client-ip=52.101.83.38 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.b="W0Z25iZf" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=KDk4IcK6tHFjMacJ6Fvral4h1zgHAqqkhCr4iYXY+7Oulb0hzS4tL3dLHhgimcyOxCg83JWUeJBo3FS74wvNI+pZL7R9bf7BUohJBaS3zevFtd5J4PvRTt4njcicwpHKQOYjKUTlROjuTsKe4Px82FVd63F45dy8HxgvkHUVIf6XaBPOAaIXrQMM2MViCqd/w5fHhjGdYFPYwYSMqUTw4X+SEoMw4mq9B8USCg8sQPhGQ7jgt6CFxO1G8oSfp4fj0Iy2cOO6JsZ83dq+wEaeaR6TRjbHWQniQNKwhQGeeWKheLqebzLrHWMz0SBvrxSMGFKTKL4LD2xISLYkcbgfxQ== 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=GYDk4kQI2fd79w2FWsht7gGbtYChEDHGbDZdkSKsjzs=; b=yJApdW0s+zmvygwbAVNtoCXaHpyb/bmVCmk5vQ3CKMDkRFMDtGsvikdU4bbaOuwNeaUlZf4A6P1vv//OnJHIwJV2WcmKGVUFoESqc28ZRA229hKW9aomXZiNcdrk2dpUqva5uYnV7lkaiGoj2lXbZ926Ate3awVYKO9VOGX/GtdvLW+78qotPe3D1EDwCpRe51nX4AS/A20bJ19Y08izZ4NSr/bMKjYoexdFv3Q/woDRjvvIh8YTP1DyVg/k3xnpIYKp/s19+LJrKzREGqdua6mSANhLXL/LLZv8uG9f+kDyJHN1xEZ6+jlxWWtPEvPuZI8rbEVg5J47Fa2c6lsrTA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oss.nxp.com; dmarc=pass action=none header.from=oss.nxp.com; dkim=pass header.d=oss.nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NXP1.onmicrosoft.com; s=selector1-NXP1-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=GYDk4kQI2fd79w2FWsht7gGbtYChEDHGbDZdkSKsjzs=; b=W0Z25iZfA6uArVcNC/U0Jf4IlxvHIf90pjo42nb3SsTDbl9OswGD7QTw8jMOcaL8dCpVUR9xjvFUumGhyMkHie9WmzwO9FM9aNJpvN+wjl77JrP1f0/VyCFuGARBSX40ow4OiKmZRgV6VoWUIrANyfMr9AkmEzyChDsiMuJiYupnqjq2n8pEHdOIpa0QS4ujsIQ86Y9U+Z+5ZZZGzzOqSqujM7CCgsp3A5eF9upxy4zeRQiWGvCkqNhFFGJvYUuu6EzYawBo3OhaRCf5mTToRpE6pTeDNRWkIyzcosHmeXMK2+2VX8mCs7FNa55ah3oy2qE1Ou3bNxGmaMqtCw4xMg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=oss.nxp.com; Received: from GV2PR04MB11799.eurprd04.prod.outlook.com (2603:10a6:150:2cf::9) by MI3PR04MB12439.eurprd04.prod.outlook.com (2603:10a6:290:74::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.406.9; Fri, 11 Sep 2026 16:59:50 +0000 Received: from GV2PR04MB11799.eurprd04.prod.outlook.com ([fe80::2146:83a2:5329:b7c]) by GV2PR04MB11799.eurprd04.prod.outlook.com ([fe80::2146:83a2:5329:b7c%7]) with mapi id 15.21.0406.007; Fri, 11 Sep 2026 16:59:50 +0000 Date: Fri, 11 Sep 2026 11:59:40 -0500 From: Frank Li To: Frieder Schrempf Cc: Frieder Schrempf , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Shawn Guo , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Eberhard Stoll Subject: Re: [PATCH 1/9] ARM: dts: imx6ul-kontron-bl-common: Replace UART3 with DIP switch GPIOs Message-ID: References: <20260908-upstreaming-v7-2-imx-dt-improvements-08-26-v1-0-4d0e8a75db79@kontron.de> <20260908-upstreaming-v7-2-imx-dt-improvements-08-26-v1-1-4d0e8a75db79@kontron.de> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: PH7PR03CA0007.namprd03.prod.outlook.com (2603:10b6:510:339::9) To GV2PR04MB11799.eurprd04.prod.outlook.com (2603:10a6:150:2cf::9) Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: GV2PR04MB11799:EE_|MI3PR04MB12439:EE_ X-MS-Office365-Filtering-Correlation-Id: 30b3a2e1-c42c-4c35-5b5f-08df102617ae X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|19092799006|1800799024|23010399003|7416014|376014|10067099003|18002099003|22082099003|56012099006|4143699003|11063799006; X-Microsoft-Antispam-Message-Info: 2tW7QWqZVIpVzJXBGlupaZlJek3S2KCFRw0vKOE5NpUtW4yGM1ZYa2jYefZsQocFqBJTM9iz7nAgQOZqcdMNHUEU40V81d0bcAFQrIUZlqMH2WR29pCjoPuns4KV1KlFdSxsRkEqN+H/qfgmWJOeJP7XAZxG+BvKtV6Y2ehD1PTxu6JSFF9z+BFEVoMqHLzBknC6Jl6XEHRaBe4AFihVe1AzTE/11i5gTx8t7AjhrzkdvBNiQwRUmbrih69nPPNyjHL+Syd8CkYJ55cExPZpmLsoixk4dSc0vuFBQBTW7jXqRsI9x6WjERfXSQ64T/oyHUhXLTGSaEr+KTeDSz11BOn/SQdYMwIHqPc+bJpadtdF3hJ6J82R1+sCRdOo0k+s2nvR7Do17+GWJKRDdyjIqBd4sQOLzcXwZnOLYM6uI9khtuzS50uzqICqCILF9wBBPZmkJE3xol0IBKkTcYPgB7JzAyxcg4nMEqWJg+iU9idHyEG666L9TQquaffKHzq++3xzEnz31J8IrMyhfySA0SNRAyP6HVDUfK/aKIyCfvURprO3Y4a4wmmeoUCu/Tubc90SN+bDi+Wf7MYVdpvX+wcRosV95wXabYZdU9o3hHDcZVV9z2But5eb/SbBaBidoPmC7PIruu0QGNQdQXDwPyBVgDTxasGufumIX0aHlmw= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:GV2PR04MB11799.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(19092799006)(1800799024)(23010399003)(7416014)(376014)(10067099003)(18002099003)(22082099003)(56012099006)(4143699003)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?cdORz4UsMmBo1lLHqAgH/6XDPGrLGJ7FRj2IVGwLyuxDcvm2FbVQhnfCpOag?= =?us-ascii?Q?Y5lsUstUUOo9cUy1oB/0Xr7BVC3g+MNpsCChO8DxqJ3I7LkQXbT77NwUoVGf?= =?us-ascii?Q?sZddE7NCUXeU5ptu8ajlWAgcn3gpCiAKUI19H/KvRqjogJchHTMtCSaSJMhV?= =?us-ascii?Q?GXybgMHsdN/cpa68Xr43OYfxRJciD91R8VVn0t0qYNgsnGr37KlC8GdlFRvl?= =?us-ascii?Q?12c9hsb2oep4/i60G3pKpIVZdtLd/v+0s1Ih2knsD6RLfo8yVHF6omuPirgx?= =?us-ascii?Q?H9DEg3/u5vdn4NdDL25XkVOCOVIeV6cN4MYFv8HemKHwN+ZSLk2otpgmjOhi?= =?us-ascii?Q?V8VIy8DT8e6P21rWlA770ATg/nKf5EOmC7gRnkwivs599Pmk6sLbosfMFxJ+?= =?us-ascii?Q?jtoT21Vy60j4haga7KaBejUBrqnLf/6YGwaRgfnlHh5ZecMYfY7L3vF28PLD?= =?us-ascii?Q?sXlA2XpB0bF53fOLXdWz3KTHSNzzT6+HblN+pqLP9lrPV5trMsmqMOm0b3RR?= =?us-ascii?Q?6jE6zYbtIPmH2mBIOn81bq+8XAHhfqP5R/C4vB7DDd5Bt+N7RLxWATgA9xuG?= =?us-ascii?Q?MnKrknevAE0Nj8WLk14KlGYfN8r+W2ZAmabfZg+oCpTVpyFHrt99eupBZjqb?= =?us-ascii?Q?V4PTHq9YSsADSjoWY0eU9CAT2xtJ1VnG9aFKg8rlYSmecKJKP3wkX83wEcdU?= =?us-ascii?Q?WXTNG0V/NtPKKD4jiOT/ne1A64nG1z23sdVE+OtICh10SJCTUNqLuUe9IJVS?= =?us-ascii?Q?GaOuH/2hfABb5nTjvcd/AibOPwDetagiMuYM1zcrFbuN66GJoAFQ6JJRVIi/?= =?us-ascii?Q?toGujbZWYEEEm+3QLYMOW2Qptn8SkgXXF8mNxHWQFuUcSksxIJ/TZfOu5kbz?= =?us-ascii?Q?NJWg2qqIctKazm1DpkWV9xh1CNn/5ykmb/KK6SHFZ2cLEOC8YargPfKLJNdd?= =?us-ascii?Q?tVEMazsQ0aBskDEUvXBQwjt3fIUx2KftLwC2YTPVC+tJVMj3pTjYu3jxa029?= =?us-ascii?Q?3SEBrFWJdPAd1YeZymIHgYDfzzhDdGWQvz+Idn5yWOBmmWlupWWgQHdFzzqy?= =?us-ascii?Q?R5ALdFunH5s6R2BhczHmR20xCryhrTV8yHkpsXNfgDi9n+unSXVpfi8hloFj?= =?us-ascii?Q?wgJgahllMex/adfMn6UlnSQyz1jGoYVSv92sC2AyP4/NdNO6nIPoK5z/rfrk?= =?us-ascii?Q?zxMVl/2Lmamuw3Dmo9bAwCo9p/WQw3qBnYP40I1do2sbbQJf+sP7GpzYOuCs?= =?us-ascii?Q?gJSvOOeGANYBcFwGSBES6UOfM5XSdlBCe5Q9arRyGdBfXgZb8umeghm/67vs?= =?us-ascii?Q?rkPm06jlSSfaCsqqJp0TPx1axZJnWFeDOhqJNf/NydSokC6FW7b3p/DPQs4j?= =?us-ascii?Q?rTVuDFgun9hp2dFxde11EpjmRrKrSdI3H0a6JtfYYzHafvKa2KcGWksAHio6?= =?us-ascii?Q?a4HcKBA6N69YOOTAHhXQAbewAVIIAw1xfZXqfLJWXs5PAMmij3VMIFjv5bfw?= =?us-ascii?Q?z8iAAKQ9kaxBvdYRWtTzkVnvotRDicC9odC17fZsFGXvG05Xaua5U84sM0UH?= =?us-ascii?Q?4FDV18eNxkAZ24yYlDP606NEsPAt+ldi/hbwTU1tnCc+acAjtNi2jdnYvlTv?= =?us-ascii?Q?qhXPRZYx9qtaItamZR2vBrQDZWEWrNnA4w7+S+wv+b0eO3AjXrMzMLWb5AHP?= =?us-ascii?Q?oH05/LStoRf2nKye/bluw6OnIFMSO33Z15OkM80AEBU1onLL9QgH9bzbRy6u?= =?us-ascii?Q?GNP8JHuc+Y4X1bBlgmVk2aL4oPimjMHJHcI4Mh3r94e0VOX0C98X?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 30b3a2e1-c42c-4c35-5b5f-08df102617ae X-MS-Exchange-CrossTenant-AuthSource: GV2PR04MB11799.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Sep 2026 16:59:50.5084 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: LWgJ01J3w1/7XOU9pz0gHsVH++yUsxijlrgdX1878UF2RmuDeNLoW9xUmwRwLu9fwj7/YjxOLYh9eXPv+axXAyIWDrvSFX/TKjiTb4rVCKZylzTUWfB9tQpRUDk67xS6 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MI3PR04MB12439 On Thu, Sep 10, 2026 at 09:05:14AM +0200, Frieder Schrempf wrote: > On 09.09.26 20:45, Frank Li wrote: > > On Tue, Sep 08, 2026 at 03:51:48PM +0200, Frieder Schrempf wrote: > >> From: Eberhard Stoll > >> > >> The latest board revision has DIP switches and lacks UART3 instead. > >> As the old revision has long been deprecated and not maintained > >> anymore, drop the support and reflect the current state of the > >> hardware. As the old revision hasn't been widely used, UART3 was > >> only available through an obscure extension connector and we have > >> carried this patch downstream for years, no users are expected to > >> be affected by this change. > > > > Remove "we have carried this patch downstream for years". > > Ok. > > > > >> > >> Signed-off-by: Eberhard Stoll > >> Signed-off-by: Frieder Schrempf > >> --- > >> .../boot/dts/nxp/imx/imx6ul-kontron-bl-common.dtsi | 21 +++++---------------- > >> 1 file changed, 5 insertions(+), 16 deletions(-) > >> > >> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-kontron-bl-common.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-kontron-bl-common.dtsi > >> index f4c45e964daf..a71669bef7d4 100644 > >> --- a/arch/arm/boot/dts/nxp/imx/imx6ul-kontron-bl-common.dtsi > >> +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-kontron-bl-common.dtsi > >> @@ -172,13 +172,6 @@ &uart2 { > >> status = "okay"; > >> }; > >> > >> -&uart3 { > >> - pinctrl-names = "default"; > >> - pinctrl-0 = <&pinctrl_uart3>; > >> - uart-has-rtscts; > >> - status = "okay"; > >> -}; > >> - > >> &uart4 { > >> pinctrl-names = "default"; > >> pinctrl-0 = <&pinctrl_uart4>; > >> @@ -283,6 +276,11 @@ MX6UL_PAD_SNVS_TAMPER5__GPIO5_IO05 0x1b0b0 /* DOUT1 */ > >> MX6UL_PAD_SNVS_TAMPER4__GPIO5_IO04 0x1b0b0 /* DIN1 */ > >> MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01 0x1b0b0 /* DOUT2 */ > >> MX6UL_PAD_SNVS_TAMPER0__GPIO5_IO00 0x1b0b0 /* DIN2 */ > >> + > >> + MX6UL_PAD_UART3_TX_DATA__GPIO1_IO24 0x1b0b0 /* CAN_ADR0 (DIP sw 1) */ > >> + MX6UL_PAD_UART3_RX_DATA__GPIO1_IO25 0x1b0b0 /* CAN_ADR1 (DIP sw 2) */ > >> + MX6UL_PAD_UART3_CTS_B__GPIO1_IO26 0x1b0b0 /* CAN_ADR2 (DIP sw 3) */ > >> + MX6UL_PAD_UART3_RTS_B__GPIO1_IO27 0x1b0b0 /* CAN_ADR3 (DIP sw 4) */ > > > > supposed header overlay or real user should set it. otherwise, the real > > user set it will be failure because pin conflict. > > Sorry, I can't figure out what you are suggesting here. Please forget it. I mess up. Frank > > > > > Frank > >> >; > >> }; > >> > >> @@ -334,15 +332,6 @@ MX6UL_PAD_NAND_DATA07__UART2_DCE_RTS 0x1b0b1 > >> >; > >> }; > >> > >> - pinctrl_uart3: uart3grp { > >> - fsl,pins = < > >> - MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX 0x1b0b1 > >> - MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX 0x1b0b1 > >> - MX6UL_PAD_UART3_CTS_B__UART3_DCE_CTS 0x1b0b1 > >> - MX6UL_PAD_UART3_RTS_B__UART3_DCE_RTS 0x1b0b1 > >> - >; > >> - }; > >> - > >> pinctrl_uart4: uart4grp { > >> fsl,pins = < > >> MX6UL_PAD_UART4_TX_DATA__UART4_DCE_TX 0x1b0b1 > >> > >> -- > >> 2.55.0 > >> > >> >