From patchwork Wed Dec 6 14:41:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frieder Schrempf X-Patchwork-Id: 13481882 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 3B7BEC4167B for ; Wed, 6 Dec 2023 14:45:10 +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=jpqRB312VJyOhE8OTnckUbzDkCFX3kRmCyfjVpADPC8=; b=fFnob0uQ/Dp4iB Qi1ZqOj2KyOx6yAKTUvYtaOvdxOCJ9h5bg+pRptEodRoEREsZl1jabzyr6JAjsn8f8I8mlSEUORs8 uSGPcfNvINes5t1wa33F11pdqPBe1CQVPftjcV0EGmzUxPHlFPWiSC/iBAmyc7OJ8JtekoBqsk9Ya kofVhqsIlS6xkIL7K2RZZLBSdDrvVbem0BcxIahdHyOrv24l/zNhreCkghsdi87dO/NdUtygGF/I0 FPWrF1acOotyQykOqVsJZk/uHF+QPzoqwEgZfp9aEsWhYyAu3vd626Ca42kGpYNWNlkWKhV1dQbhf tarELisqycXxd3PQaSTg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rAt8l-00AWm8-0P; Wed, 06 Dec 2023 14:44:43 +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 1rAt8e-00AWh3-1N for linux-arm-kernel@lists.infradead.org; Wed, 06 Dec 2023 14:44:38 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 7F65BC00E1; Wed, 6 Dec 2023 15:44:34 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fris.de; s=dkim; t=1701873874; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=oeyirk30VzrJwXs/jPqp36nZYKhhaMWlQBYYBY4oDRg=; b=g1WWld62zYcSAD+OzHDUgIIPySaYHRHD3moakIVOl50tfEtz4AHpTg3qiaOCmnsPrKyPFf VaTRdD3cNAhcP0Kq2+UuHEdfWmi8LQAdGHsVNm+/FwgPQRWKPDcLn5wK5q3+hIj5Y6JJ5s cuopLKS4SH+Jml0QA/RatdtlCiRNK7Ir2QEr2QDu21oLcm9+0oiTo7ILG7qjt3DmQTc2Fg MhUn4XCSs5JXnCkGeU6gZqdn/EODiYEkrf1+n3EkfSy2E8DkEjNNZ1NWr+c8iCEa1E0kJP d7MYkrumx05ifhqit1q0Tfaa6I7h+NXixOgENGeqTZ76MkikgN05ASMXMgLbjw== 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 , NXP Linux Team , Pengutronix Kernel Team Subject: [PATCH v3 05/14] arm64: dts: imx8mm-kontron: Disable pullups for onboard UART signals on BL OSM-S board Date: Wed, 6 Dec 2023 15:41:08 +0100 Message-ID: <20231206144201.46911-6-frieder@fris.de> In-Reply-To: <20231206144201.46911-1-frieder@fris.de> References: <20231206144201.46911-1-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-20231206_064436_622279_C716A3B6 X-CRM114-Status: UNSURE ( 8.84 ) 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: de9618e84f76 ("arm64: dts: Add support for Kontron SL/BL i.MX8MM OSM-S") Signed-off-by: Frieder Schrempf --- Changes for v3: * none Changes for v2: * none --- .../dts/freescale/imx8mm-kontron-bl-osm-s.dts | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts index 0730c22e5b6b9..1dd03ef0a7835 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts @@ -313,19 +313,19 @@ MX8MM_IOMUXC_SAI5_MCLK_GPIO3_IO25 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 >; };