From mboxrd@z Thu Jan 1 00:00:00 1970 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 42323C433EF for ; Tue, 26 Apr 2022 20:53:16 +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: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:In-Reply-To:References: List-Owner; bh=c3fvyL/sc8Ks61LzX+VycwDhrFW9k4M5Mcy15hZO5zY=; b=SO590LZshKJGFs nOjg4nBXOIzPg63qeAcPuv61FoVoFrxyV3WkSGurS732fhP/Ce9OmkBh4fwTlSmYD9+PeHeR4KpcF 4Cg3UNwoTIvaSPPZpNFOdzOeRvpWXVxvpvwqxJd9AwGkR8PCIMA/+KfO+0AYjhNpNLR73j7csToBS ampyXARXoes4UpNZmlr7XsRdjD8SjYYXjIaZR92Rl9SumyfpeU7KipjFMY060wL8hK8S9IyXUkJJZ b7pU6ag2W7cAhZYKfvbcGntvAK413WnZHBbhImz/tapnQWKKCuQ1M7ruzl+GEoH1byuH2Y6rmNtnI t4qUSCR1Dp6ZhK3PzTLQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1njSAD-00GDvc-PP; Tue, 26 Apr 2022 20:52:01 +0000 Received: from mail-io1-xd32.google.com ([2607:f8b0:4864:20::d32]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1njSAA-00GDur-If for linux-arm-kernel@lists.infradead.org; Tue, 26 Apr 2022 20:51:59 +0000 Received: by mail-io1-xd32.google.com with SMTP id r12so75557iod.6 for ; Tue, 26 Apr 2022 13:51:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=NPJGz4/hF7bxyiZ8k45IvZ9vr8sgmEcRNZCruLKPAIs=; b=qO7EQE+IZJEvr3CNB6/79dxpELy+NIpkltL9+TxJitCRbIyl+wGw+0xmcs89V9frjZ rR+MnRx4+Z+4EN0vbAc27odUK1/pM7hRO1qOQdJP29aSNoZcMArQ9qGM0/0nI5x3bPMC qHQaFhPQ+m3kHQXboPzlehBUWy86GrMazKfIeF6x8Dt2L/2ATv5bl+LGEQ9KbgJkNtWY 6llwaet+Ato2o2xb2W6q8MrhA5ck1flJo3XAaV7wUKl81VPcGlsryPpNxC8fDHZhQbM8 Ji/7yA1bWOE9w+CYXcNeZmmg702qBgqXduRjd2QEi5cOmETJ8A15VeueIoIWgxQp56F/ x4Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=NPJGz4/hF7bxyiZ8k45IvZ9vr8sgmEcRNZCruLKPAIs=; b=sgOa6v34lEGJ6GATRlWixeFkpxowXcggQ28AbzS1mnLBDlVqacNAuZ0RYdEvLhRYzd tcLdB6HYe0HUp1rA51LDJ+yNdEUTs6Db0I9lvup+sXNN2yP10WPemaIlRyCs4MOXvNGv ObW31YODRl3zRThEJzZdX+Zzf2aXDf5D83pPzD6O9DFM+5ZTALq/bSNjFWsqqP0ukwHl U0cM8jrBDDGsKQdpiMCaIfAQg4DD/CMvSvAXdH3o1bmSAneQ8lXjHxP4WWthIJizsrgP YXXEA6UgCbeBr8NrtTyysaVVGlVBdoipnvwghqEesiNjdPNo8EUFAShPyU5ZeIwEbDQn ET4w== X-Gm-Message-State: AOAM5301mSi+eMjOf5J9R2UEOCgRJiVeUNbWX//RdFBiN+IRc1DcvsJW dtwYdP68sabOv7rlPR2LdjMGjVAMdCs= X-Google-Smtp-Source: ABdhPJzPyXJrYGZGYsvzk5LRdgUObHOilKMrNxHUxN7Wds2GzF4Q5x6bRRZACxVwNfnbIZUV/upvVA== X-Received: by 2002:a92:c247:0:b0:2cc:1798:74fe with SMTP id k7-20020a92c247000000b002cc179874femr9761394ilo.239.1651006314342; Tue, 26 Apr 2022 13:51:54 -0700 (PDT) Received: from aford-IdeaCentre-A730.lan ([2601:448:8400:9e8:fb7a:66f4:d9a8:dadb]) by smtp.gmail.com with ESMTPSA id r9-20020a6b6009000000b006412abddbbbsm9853798iog.24.2022.04.26.13.51.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Apr 2022 13:51:53 -0700 (PDT) From: Adam Ford To: linux-arm-kernel@lists.infradead.org Cc: shawnguo@kernel.org, aford@beaconembedded.com, Adam Ford Subject: [PATCH 1/2] arm64: dts: imx8mm-beacon: Enable RTS-CTS on UART3 Date: Tue, 26 Apr 2022 15:51:43 -0500 Message-Id: <20220426205144.476234-1-aford173@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220426_135158_671723_A6C5E594 X-CRM114-Status: UNSURE ( 8.37 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There is a header for a DB9 serial port, but any attempts to use hardware handshaking fail. Enable RTS and CTS pin muxing and enable handshaking in the uart node. Signed-off-by: Adam Ford diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi index ec3f2c177035..f338a886d811 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi @@ -278,6 +278,7 @@ &uart3 { pinctrl-0 = <&pinctrl_uart3>; assigned-clocks = <&clk IMX8MM_CLK_UART3>; assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>; + uart-has-rtscts; status = "okay"; }; @@ -386,6 +387,8 @@ pinctrl_uart3: uart3grp { fsl,pins = < MX8MM_IOMUXC_ECSPI1_SCLK_UART3_DCE_RX 0x40 MX8MM_IOMUXC_ECSPI1_MOSI_UART3_DCE_TX 0x40 + MX8MM_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B 0x40 + MX8MM_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B 0x40 >; }; -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel