From patchwork Wed Oct 9 19:20:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Ford X-Patchwork-Id: 11181967 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 272DC1575 for ; Wed, 9 Oct 2019 19:21:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 07FAC21924 for ; Wed, 9 Oct 2019 19:21:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Hq8b7bkH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728804AbfJITVK (ORCPT ); Wed, 9 Oct 2019 15:21:10 -0400 Received: from mail-io1-f67.google.com ([209.85.166.67]:41340 "EHLO mail-io1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731750AbfJITVJ (ORCPT ); Wed, 9 Oct 2019 15:21:09 -0400 Received: by mail-io1-f67.google.com with SMTP id n26so7619954ioj.8 for ; Wed, 09 Oct 2019 12:21:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=WRLTOQxZcVgAWS4/iF3mt1JqORvWayZ30w3FnMsL3GA=; b=Hq8b7bkHVKaGEfHfxuKq4MBsCv6UTWfjPEl0TlHQymfUCDW7EC0G2xes+CuCAkuOgB vNQYhMnZAjzQoFP/lnP5XfE8TqI2SbZlY5QjkccPB5icxDwBUmvQOZjuIkDQv1HnZF7+ Myz8eOl7t09ENFH/mI1BmA+T9xsJNSzeSf31xPpgM5SxD0S7AaUQ6JLWgiXMB29yxCX3 2w6vdCofd8Jl7MRSi/B3IPv9sYsidYzuRmzkunGocqWe6hxgi5Nn0CsAo+6ttZyiMK/V FmIFhhPT0MxjQWu9pmYh9vaLt+cH5KqbzgqWVuUacRAFg7cqz50+iJNNmNfvERFpWIBi GlWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=WRLTOQxZcVgAWS4/iF3mt1JqORvWayZ30w3FnMsL3GA=; b=DS65yHSr7xmsnstXL4gsCh/WFNVeZYRyTcqyVDN/dQQ2I+ZGziAIY399rHltdfcppe xefow+7N4a/jmtamOTOMhXiPp7TrZTEB37Bf5W5h0HL349jKgPwe5CESCGQxZI3qDH19 15XWu1mfC/OmlUAiMV5BmRg0I26k9ZC2BmmB213vvVza27C65PnHypBJ+MjQUt4HZfWc YpLjAdxtaiPItBtdLbSTZiYMHv7nDbfm4kXffAc+aA3bBm0WsEMf/PNrOhfCmy2MOZr1 FZBQLNoLD6ai77fPUcMyt6SlV49JOPeUxfQnBdYTlgmdRlBI1kweOoTjoG7qy3E9iNv+ A3fw== X-Gm-Message-State: APjAAAVjxgQakBXUni1Nbn/EAEP7iPu4deOPVDr6hc0ccduO2hP6Hgjd 1XHvAgkcX4GnmzLZhLX9U1kip3PZ X-Google-Smtp-Source: APXvYqw2XLzr8NYYga3oP0H6o4Kyb6D/o7XtxRhYqpSY2Va3aPGAyJwFAPVjTCWvYjCoMjtBlayYEA== X-Received: by 2002:a5d:9856:: with SMTP id p22mr5157304ios.29.1570648868813; Wed, 09 Oct 2019 12:21:08 -0700 (PDT) Received: from localhost.localdomain (c-73-37-219-234.hsd1.mn.comcast.net. [73.37.219.234]) by smtp.gmail.com with ESMTPSA id r138sm1875665iod.59.2019.10.09.12.21.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2019 12:21:07 -0700 (PDT) From: Adam Ford To: linux-omap@vger.kernel.org Cc: adam.ford@logicpd.com, tony@atomide.com, Adam Ford Subject: [PATCH] ARM: dts: logicpd-torpedo: Disable Bluetooth Serial DMA Date: Wed, 9 Oct 2019 14:20:53 -0500 Message-Id: <20191009192053.30255-1-aford173@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org The default serial driver for omap2plus is the 8250_omap driver. Unfortunately, this driver does not yet appear to have fully functional DMA on OMAP3630/DM3730 which causes some timeouts and frame errors. This patch removes the DMA entry from the device tree which allow the UART to operate without Bluetooth frame errors. If/when DMA is working on OMAP3630, this should be reverted. Signed-off-by: Adam Ford diff --git a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts index c34ba0ef8b4d..79d56bc14e88 100644 --- a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts +++ b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts @@ -51,6 +51,7 @@ }; &uart2 { + /delete-property/dma-names; bluetooth { compatible = "ti,wl1283-st"; enable-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>; /* gpio 162 */