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: 630126 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91AC9C433FE for ; Tue, 29 Nov 2022 16:09:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235622AbiK2QJj (ORCPT ); Tue, 29 Nov 2022 11:09:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235210AbiK2QJh (ORCPT ); Tue, 29 Nov 2022 11:09:37 -0500 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99D50391FA for ; Tue, 29 Nov 2022 08:09:36 -0800 (PST) Received: by mail-wr1-x42b.google.com with SMTP id f18so792278wrj.5 for ; Tue, 29 Nov 2022 08:09:36 -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=GfVmTACSLa56Y2VbstHpeH5YFLpP1+I4PUkUONqDC7jZ6/AtzjscTxHYsuNH1EvfDy WwJlGT5LYQfj4Msj+0jGDUDijPVPC9WYUiXlve7DHfCngtBkh0+eHKrTgObr6SywpzTl SgT0uUmPLKLchgyjKjnATNLRwKMsH/RPG47T1DJpYBjhJJkL8PW88Pe5W7/QnJXYdjeU R3srfL92ODYiewuPMOgKU8uWyG0DRR0iWw/kda+rLR4EabeJHAz6auC7fM+nrHMaH/F9 RF53PTBPJnr6ghp/OtSD7iNmBglP7SKo6jpvqGjM48uI2Yx2Q6l83H14X3vWEusahW9s ll8w== X-Gm-Message-State: ANoB5plSsqsXg0DFqkkEr05HKdN59tO//Omz64APCldbiWd0Png1h76c FoKVnu/L56OdO6W7JyZPGNtLjw== X-Google-Smtp-Source: AA0mqf5lPPvOQpJyW4bMuhcW8gCMG5F4uApp+F8DYwjDoEYMVXFetf425iOchxDT1jYjeBgBJWVKvA== 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 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org 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"; };