From patchwork Thu Nov 30 16:16:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frieder Schrempf X-Patchwork-Id: 13474707 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 01AAFC4167B for ; Thu, 30 Nov 2023 16:19:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EiXRaK7dqkXFpsNhVaew/7eaXPqy3AnGm+rQ7an0U6Q=; b=a7JJhzMA/CZ8GL TK7qjlE05q0vnTf9OCWk5FOk0JnXMByih+4vCm8CUu5stw4+BoVLAqpASFzeTwaPunycZ6Jv+MrAj ZG9ovcKRzS66MLlezTqeXARbbOszqoL8N6bwXYju1Hh9MU/pflff2PIeP7RYvUamux7pldmo/hVEw 2ckaMTw61VqBpUECyxEXGWaahU4KN6fgi7YD+RsTgER6LwjoOvoSH6uaFW8mBqluH+mGamvNi+Uw5 /DAyIT9hxFuTx2dJHroAj9BgXDb44oUjcQvje1xbCDz/taHWd07QPAOgnXHTmTefnS9zqCvBMm5t6 D6dY8v431yAmAjWhLBVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8jkw-00BJEz-0a; Thu, 30 Nov 2023 16:19:14 +0000 Received: from [2a01:4f8:c2c:390b::1] (helo=mail.fris.de) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8jkW-00BJ20-1q for linux-arm-kernel@lists.infradead.org; Thu, 30 Nov 2023 16:18:50 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id E6EBCC029B; Thu, 30 Nov 2023 17:18:42 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fris.de; s=dkim; t=1701361123; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=OvtlGvUIt/VIQLbFlGg/QdDFVoax280yTkdU9/Mj4W0=; b=FJp+e3jjdSXPpVHMmh6NeS8+FnNShUKA3tdv7DMYUidH+T8LuaMwAPC1HPUa7qJ8+Bryik PKVh0YD8umE3jXPDsUHM5TqaQXGnI9DAuJCf57VR1HY0nizsQoaOhQ7CWRhv8h55y9bVrL BDrpyh1YGmCv12GbShzsmyCJB//IwEOF7/PjrbETwcNkloQq9OVw61di3v0ZTXtHCMVLf0 JgAvk+YkyQO+vqIf3I+EzDbPknSG6/XPg+tACmTR8jO/dAGh2EN5uQQPweiVy44AqKjia+ W7wP8+vnM0BF+BjLEBLYhj1doQxXYAAW6Qsp19gW2a9kzBGOo/rr9sOkvn0ANQ== From: Frieder Schrempf To: Conor Dooley , devicetree@vger.kernel.org, Frieder Schrempf , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , Shawn Guo Cc: Fabio Estevam , Krzysztof Kozlowski , NXP Linux Team , Pengutronix Kernel Team Subject: [PATCH v2 06/14] arm64: dts: imx8mm-kontron: Disable pullups for onboard UART signals on BL board Date: Thu, 30 Nov 2023 17:16:06 +0100 Message-ID: <20231130161657.556483-7-frieder@fris.de> In-Reply-To: <20231130161657.556483-1-frieder@fris.de> References: <20231130161657.556483-1-frieder@fris.de> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231130_081848_811932_13DB0C82 X-CRM114-Status: UNSURE ( 9.58 ) 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 From: Frieder Schrempf These signals are actively driven by the SoC or by the onboard transceiver. There's no need to enable the internal pull resistors and due to silicon errata ERR050080 let's disable the internal ones to prevent any unwanted behavior in case they wear out. Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") Signed-off-by: Frieder Schrempf --- Changes for v2: * none --- .../boot/dts/freescale/imx8mm-kontron-bl.dts | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts index 6d0c3d7e1d103..97562d6ed8012 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts @@ -450,19 +450,19 @@ MX8MM_IOMUXC_SD2_WP_GPIO2_IO20 0x19 pinctrl_uart1: uart1grp { fsl,pins = < - MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX 0x140 - MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX 0x140 - MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B 0x140 - MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B 0x140 + MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX 0x0 + MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX 0x0 + MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B 0x0 + MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B 0x0 >; }; pinctrl_uart2: uart2grp { fsl,pins = < - MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x140 - MX8MM_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x140 - MX8MM_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x140 - MX8MM_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x140 + MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x0 + MX8MM_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x0 + MX8MM_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x0 + MX8MM_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x0 >; };