From patchwork Tue Nov 29 16:08:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Jackson X-Patchwork-Id: 27325 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp431959wrr; Tue, 29 Nov 2022 08:12:14 -0800 (PST) X-Google-Smtp-Source: AA0mqf4LXD/1phENfIapWdkHKbWTcXSWIvnkSXOUO9qMH6h9euYN+MeJl5Hk2Y3vz0x0lWWxvuhC X-Received: by 2002:a05:6402:5c7:b0:469:6e8f:74c1 with SMTP id n7-20020a05640205c700b004696e8f74c1mr34895394edx.334.1669738334403; Tue, 29 Nov 2022 08:12:14 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1669738334; cv=none; d=google.com; s=arc-20160816; b=r7rb0rM0GFEd5GFhuM1907UuBVX0GrFs+WWVni9r6E6b3hr1IWBaUcE7v4zK6l0h4k NQBkL5iY4tTDNogQ13sMH9mPHFnCR6q/8CoKqX+2ktTVaBiYR/fEVVVhWDuvX3yqZQf4 wBol9DxW5oVxj7OV8DghVQRUHlTRpxluPYjBL8vLvINbj5KV7vVX3pAbCHj7qeca4bwW XJWGYUsw8n17cD8t6Z46xawPXqnxBi1fJ6GTBhCccu1p2gixEyLZ9B7M9FAjpio/3TGI O5Aiqh4QgKWw2x4Xbhwyfs+tKWpWaKQlGp567yPmvX8/RaeIeh+5TtitSgW5/L1/QVWn 2hyA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=A9lRrQgwNdzcRvhC7oNoTPa3Q44tE4Nwzh6uHCLmick=; b=tJfbbQ6sK6lYRwJn/mMthK2F2oWn+QU6/8G44Vz8G+xOicJAWNAtZAf02iGqSYE33J XgFDogQXvgNsl4UtAW8DnDbkarMFy2mBbmuAhIrkJ8JW8FR12u3PnpzWWWBAoWa5Bu0K laWdJQ2+lAFEQTYpl+EVBvvSw/l141jME6pGCTfuKeIGwqKEWcHPRlZVj+qcaWreuTnr yAOmYCiDXmBJJWDLc+cqA7QR79k05dgXpmdTGVG1unSeBzi12faoDFSrtOGdVORZFybA rzQ7zD7PYum3EochhKwHfkPavq6Jh8phyQgYQDTAkuQejDf+N9unbLpmtFOALQTcpjE/ ia6w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@newflow-co-uk.20210112.gappssmtp.com header.s=20210112 header.b=h97xq4jp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f16-20020a0564021e9000b004680b40d2ecsi13502784edf.235.2022.11.29.08.11.50; Tue, 29 Nov 2022 08:12:14 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@newflow-co-uk.20210112.gappssmtp.com header.s=20210112 header.b=h97xq4jp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235228AbiK2QJk (ORCPT + 99 others); Tue, 29 Nov 2022 11:09:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234542AbiK2QJg (ORCPT ); Tue, 29 Nov 2022 11:09:36 -0500 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EDBF1EC57 for ; Tue, 29 Nov 2022 08:09:35 -0800 (PST) Received: by mail-wr1-x434.google.com with SMTP id q7so21975478wrr.8 for ; Tue, 29 Nov 2022 08:09:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=newflow-co-uk.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=A9lRrQgwNdzcRvhC7oNoTPa3Q44tE4Nwzh6uHCLmick=; b=h97xq4jpFYXMqZLHjJDp3HY5QwPTQTpe47hCbHyRcmUmLj6DR+mDDs66iu+LLkQLyU uUzPfNErHJtes8gK4Ve6c98MRy/dR7VsBGh3UiwjbijWl9fuPpHg+uc3ef8G3JgGAxGm 7oiezeTqhjN9q1VkahpUUFpKVz86XXLROnoRXjz9lC13HZhKOpeKFPROkQe9/rfmg2am AaSTMPKGweYXRzYFH/eS/t+bPsoncS9L7Pv8SHP1goaG3/bok71wWK8WIJhiZqIUlL0b zgeZTQPDAiaH+YrOA33ZIvuL+e0X1EEQ4iYxuq9cZ8uuSDBDAdNKtG62SH2enNPrfMxz zovA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A9lRrQgwNdzcRvhC7oNoTPa3Q44tE4Nwzh6uHCLmick=; b=IAwSNeKJ6BRKOzF7mdy00MW2p/vDB/ItQnUZGCaaLc4udLLN8T+XPlc53hvlHrDao6 yrtK9324VGyvG5ePwAyf2cNU52qkmemSxgP1CqX19Fa/RE7j6sofyr4d1dxMIFgFLIOF EQshw0cIEdUTR6eX7lPs5EPN1jOvbLO4jlmNGO/GbDmEJ1p+Uza6bQ9DK9XG7XliaGyk 0BJxlsuAIsrru9uljZnzf0YSteyhkv7Mr9MrHQjH9EH/oM2jwODOFe395QkzpirZ+++2 3UxMo+DdDkq1EibdM6D9DGawup90V+puZxi7e36U2QVQJeOhU7Er6bC5Yt9LK/wWqbc2 HWtQ== X-Gm-Message-State: ANoB5pmoK6sKVfbK1H+/Vb2dydqsOguwdFJ7/IHz1tohnVf7CRzroQp8 6PRQ/ORwiDwOSwG3nA45/yXLug== X-Received: by 2002:a5d:408f:0:b0:242:263e:3ba7 with SMTP id o15-20020a5d408f000000b00242263e3ba7mr1459483wrp.561.1669738175210; Tue, 29 Nov 2022 08:09:35 -0800 (PST) Received: from mpfj-unity.. ([94.12.112.226]) by smtp.gmail.com with ESMTPSA id y18-20020a05600c365200b003c6c5a5a651sm2477572wmq.28.2022.11.29.08.09.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Nov 2022 08:09:34 -0800 (PST) From: Mark Jackson To: =?utf-8?q?Beno=C3=AEt_Cousson?= , Tony Lindgren , Mark Jackson , Rob Herring , Krzysztof Kozlowski , linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/5] ARM: dts: am335x-nano: Enable RS485 mode for UART3 & 4 Date: Tue, 29 Nov 2022 16:08:15 +0000 Message-Id: <20221129160818.276696-3-mpfj@newflow.co.uk> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221129160818.276696-1-mpfj@newflow.co.uk> References: <20221129160818.276696-1-mpfj@newflow.co.uk> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1750847543583068856?= X-GMAIL-MSGID: =?utf-8?q?1750847543583068856?= UART3 & 4 are both RS485 ports. So we need to configure and enable this by default. Signed-off-by: Mark Jackson --- arch/arm/boot/dts/am335x-nano.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/am335x-nano.dts b/arch/arm/boot/dts/am335x-nano.dts index 05cbfe24f778..cecc2afaeff4 100644 --- a/arch/arm/boot/dts/am335x-nano.dts +++ b/arch/arm/boot/dts/am335x-nano.dts @@ -187,12 +187,22 @@ &uart2 { &uart3 { pinctrl-names = "default"; pinctrl-0 = <&uart3_pins>; + rts-gpio = <&gpio2 17 GPIO_ACTIVE_HIGH>; + rs485-rts-active-high; + rs485-rx-during-tx; + rs485-rts-delay = <1 1>; + linux,rs485-enabled-at-boot-time; status = "okay"; }; &uart4 { pinctrl-names = "default"; pinctrl-0 = <&uart4_pins>; + rts-gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>; + rs485-rts-active-high; + rs485-rx-during-tx; + rs485-rts-delay = <1 1>; + linux,rs485-enabled-at-boot-time; status = "okay"; };