From nobody Fri Apr 3 11:02:31 2026 Received: from mail2.fris.de (mail.fris.de [116.203.77.234]) (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 AD9D73271E0; Wed, 18 Feb 2026 13:31:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=116.203.77.234 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771421467; cv=none; b=DP+GMnOxJDjJmOkuaEhL5BdcqV6xsJI/OKPfXjZK/c3BCGFv6xAJnwXFFE+CjJw2sa2653oQduWOlO/k1444goVB6B2AUa/7evDjt1+tnFxBYHy9qj+bv+GO1IOXS2gx1v6eZHbik26SrUWLKYnBp6P0YnzenNF6z97enqJ0Muo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771421467; c=relaxed/simple; bh=e91Bf0/4F0jSKanW5IP/0WxNZq2xDtnxjA6XIHqZcQ0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uJyXvCc78AQJO8a1vH/oItLPoTJ0SiugzZh0hpH6KmTWYKqRG6A2zjordHC0jxfpOO1aumAaZcIZC3wxpx4olCF8/w7oKR1aE8f9zkgkpr7wodhkclPVtRwMAz4QGYlnXxkCgiGLRyg8dCs3LbcWDN4IF1WFeQIfEcJvIrVXigY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fris.de; spf=pass smtp.mailfrom=fris.de; dkim=pass (2048-bit key) header.d=fris.de header.i=@fris.de header.b=tydotcxO; arc=none smtp.client-ip=116.203.77.234 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fris.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fris.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fris.de header.i=@fris.de header.b="tydotcxO" From: Frieder Schrempf DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fris.de; s=mail; t=1771421124; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=o37TNlF0kYb11kTviCYiAyIK3p/HW+yTrLpm+YqS1P4=; b=tydotcxOf2sVdLATrRJpdSfzWtdmiUkSWD7O+3+1tSLsEL6iv/iXGFtgDOBHIchv9bBMri WzOtG6HWnp3IMDeu3GXomKVidWw7bFUo95zpa04eTpqwYDyZN8GSwa/b970VZ+ue31coeJ MBLKliiXHqlXv+gQjwWI0Ozl20P/WGN2ixJIykocZzQGjBaWwF4FCL1eZV7uuc3ejNQbO1 JJ/O2GaBuF1Hm8EjGDI4buuOlYY+84Qa2G2eZ8vM7YMn2GeMYPesBbUpmyPPi5b81ZCITb o01AVUJxWifjlaxpfls4cCLH2XRfZJb+ClJt25YNcYqyMjs1P5fJ01WEyHL0hA== To: Conor Dooley , devicetree@vger.kernel.org, Frank Li , Frieder Schrempf , imx@lists.linux.dev, Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , Shawn Guo Cc: Fabio Estevam , Pengutronix Kernel Team Subject: [PATCH 1/4] arm64: dts: imx8mp-kontron: Fix touch reset configuration on DL devices Date: Wed, 18 Feb 2026 14:25:05 +0100 Message-ID: <20260218132519.74570-2-frieder@fris.de> In-Reply-To: <20260218132519.74570-1-frieder@fris.de> References: <20260218132519.74570-1-frieder@fris.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Frieder Schrempf The reset signal needs a pullup, but there is no hardware pullup. As a workaround, enable the internal pullup to fix the touchscreen. As this deviates from the default generic GPIO settings in the OSM devicetree, add a new node for the touch pinctrl and redefine the generic gpio1 pinctrl. Fixes: 946ab10e3f40f ("arm64: dts: Add support for Kontron OSM-S i.MX8MP So= M and BL carrier board") Signed-off-by: Frieder Schrempf Reviewed-by: Frank Li --- .../boot/dts/freescale/imx8mp-kontron-dl.dtso | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-kontron-dl.dtso b/arch/ar= m64/boot/dts/freescale/imx8mp-kontron-dl.dtso index a3cba41d2b531..7131e9a499ae1 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-kontron-dl.dtso +++ b/arch/arm64/boot/dts/freescale/imx8mp-kontron-dl.dtso @@ -77,6 +77,8 @@ &i2c1 { touchscreen@5d { compatible =3D "goodix,gt928"; reg =3D <0x5d>; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_touch>; interrupt-parent =3D <&gpio1>; interrupts =3D <6 8>; irq-gpios =3D <&gpio1 6 0>; @@ -98,6 +100,16 @@ &lvds_bridge { status =3D "okay"; }; =20 +/* redefine to remove touch controller GPIOs */ +&pinctrl_gpio1 { + fsl,pins =3D < + MX8MP_IOMUXC_GPIO1_IO00__GPIO1_IO00 0x19 /* GPIO_A_0 */ + MX8MP_IOMUXC_GPIO1_IO01__GPIO1_IO01 0x19 /* GPIO_A_1 */ + MX8MP_IOMUXC_GPIO1_IO05__GPIO1_IO05 0x19 /* GPIO_A_2 */ + MX8MP_IOMUXC_GPIO1_IO08__GPIO1_IO08 0x19 /* GPIO_A_5 */ + >; +}; + &pwm1 { status =3D "okay"; }; @@ -108,4 +120,11 @@ pinctrl_panel_stby: panelstbygrp { MX8MP_IOMUXC_SAI3_RXFS__GPIO4_IO28 0x19 >; }; + + pinctrl_touch: touchgrp { + fsl,pins =3D < + MX8MP_IOMUXC_GPIO1_IO06__GPIO1_IO06 0x19 + MX8MP_IOMUXC_GPIO1_IO07__GPIO1_IO07 0x150 + >; + }; }; --=20 2.52.0