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-0400 From: Frank Li To: Alberto Merciai Cc: Primoz Fiser , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, upstream@lists.phytec.de Subject: Re: [PATCH 1/2] arm64: dts: freescale: imx93-phyboard-nash: Add jtag overlay Message-ID: References: <20251007084028.1125185-1-primoz.fiser@norik.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: SJ0PR05CA0090.namprd05.prod.outlook.com (2603:10b6:a03:332::35) To DB9PR04MB9626.eurprd04.prod.outlook.com (2603:10a6:10:309::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB9PR04MB9626:EE_|VI0PR04MB10137:EE_ X-MS-Office365-Filtering-Correlation-Id: 6cd7824a-8fc3-4258-b41d-08de131e1632 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: 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X-MS-Exchange-CrossTenant-UserPrincipalName: OP7u4d8njtxzsIpHmI2EYuBK/dX6DfJQBw7gBweIg2w2c9HmpsCTS0xKLf0ZPyDOPSaZqXue7xJh48ccul267Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR04MB10137 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251024_095512_904461_4AE8C629 X-CRM114-Status: GOOD ( 22.39 ) 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 04:36:40PM +0200, Alberto Merciai wrote: > On Fri, Oct 24, 2025 at 09:30:31AM -0400, Frank Li wrote: > > On Tue, Oct 07, 2025 at 10:40:27AM +0200, Primoz Fiser wrote: > > > Add overlay to enable JTAG pins on the board's JTAG (X41) connector. > > > > > > Signed-off-by: Primoz Fiser > > > --- > > > arch/arm64/boot/dts/freescale/Makefile | 2 ++ > > > .../freescale/imx93-phyboard-nash-jtag.dtso | 26 +++++++++++++++++++ > > > 2 files changed, 28 insertions(+) > > > create mode 100644 arch/arm64/boot/dts/freescale/imx93-phyboard-nash-jtag.dtso > > > > > > diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile > > > index 525ef180481d..c72a6fdc5412 100644 > > > --- a/arch/arm64/boot/dts/freescale/Makefile > > > +++ b/arch/arm64/boot/dts/freescale/Makefile > > > @@ -356,10 +356,12 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-kontron-bl-osm-s.dtb > > > dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash.dtb > > > dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-segin.dtb > > > > > > +imx93-phyboard-nash-jtag-dtbs += imx93-phyboard-nash.dtb imx93-phyboard-nash-jtag.dtbo > > > imx93-phyboard-nash-peb-wlbt-07-dtbs += imx93-phyboard-nash.dtb imx93-phyboard-nash-peb-wlbt-07.dtbo > > > imx93-phyboard-segin-peb-eval-01-dtbs += imx93-phyboard-segin.dtb imx93-phyboard-segin-peb-eval-01.dtbo > > > imx93-phyboard-segin-peb-wlbt-05-dtbs += imx93-phyboard-segin.dtb imx93-phyboard-segin-peb-wlbt-05.dtbo > > > imx93-phycore-rpmsg-dtbs += imx93-phyboard-nash.dtb imx93-phyboard-segin.dtb imx93-phycore-rpmsg.dtbo > > > +dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash-jtag.dtb > > > dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash-peb-wlbt-07.dtb > > > dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-segin-peb-eval-01.dtb > > > dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-segin-peb-wlbt-05.dtb > > > diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-nash-jtag.dtso b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash-jtag.dtso > > > new file mode 100644 > > > index 000000000000..4744eabf95f3 > > > --- /dev/null > > > +++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash-jtag.dtso > > > @@ -0,0 +1,26 @@ > > > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) > > > +/* > > > + * Copyright (C) 2025 PHYTEC Messtechnik GmbH > > > + * Author: Primoz Fiser > > > + */ > > > + > > > +#include "imx93-pinfunc.h" > > > + > > > +/dts-v1/; > > > +/plugin/; > > > + > > > +&gpio2 { > > > + pinctrl-names = "default"; > > > + pinctrl-0 = <&pinctrl_jtag>; > > > +}; > > > > Use gpio to set pinctrl to no-gpio mode is strange. I am not sure if there > > are better method, but at need comments here to show why have to do that. > > > > In old imx6 platform we use pinctrl_hog for that purpose, is not? It'd better than gpio, but I am not sure if pinctrl_hog still be supported because I have not seen it for the long time. Frank > > > Frank > > > + > > > +&iomuxc { > > > + pinctrl_jtag: jtaggrp { > > > + fsl,pins = < > > > + MX93_PAD_GPIO_IO24__JTAG_MUX_TDO 0x31e > > > + MX93_PAD_GPIO_IO25__JTAG_MUX_TCK 0x31e > > > + MX93_PAD_GPIO_IO26__JTAG_MUX_TDI 0x31e > > > + MX93_PAD_GPIO_IO27__JTAG_MUX_TMS 0x31e > > > + >; > > > + }; > > > +}; > > > -- > > > 2.34.1 > > > > >