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 05436C3DA6E for ; Wed, 3 Jan 2024 13:49:27 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:CC:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=t8zNFqZJMgciwMfixqWRnqRSpkimf76XcQKGTyyG2jk=; b=H3bQhCYUgC0i2B uZhowryCF1Zy6whBPDQZW22hZwZ+DAC2r6USD8OxY+epyXuORHg8VqcHhdyy2601Jj6AHFyIIhtiv 4IY2whfsdkVSoJ8LCQreSsZB/VmwF9YMlG4kl5cXk2myMeTkPG/Fn4K8ZITf5soYFGUTgwrMplNGV TnCv7Sb+xLQyhqSZWjyhztdLUWHZmiK4uhoyUdryeLFjOuO0guNBUc9F5LWBa4KmKc5Gz3zjqhbR/ xFQAWAJhHsDjxIUEf+1SbcpK1egcP7k0JOt6XqHmRW/z5EIo+TTT92QmchcGkZIp3YrQeQMyll96H oDODtmXuJ+OFVYYKucJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rL1cH-00B1NV-0B; Wed, 03 Jan 2024 13:49:05 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rL1cE-00B1Mc-2W for linux-arm-kernel@lists.infradead.org; Wed, 03 Jan 2024 13:49:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1704289743; x=1735825743; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=gqqt1B+8i4OwFYpeKi7clftZoS7TrPIgp2YKGqm/Lfw=; b=bWbDDA+Fj6OGZTurxoNt2/WWLsofLhz6Cq2nLoNQq2kmqaphS+zcsymy KRvdtnAiuGkB9rKvWUz3g4NtSwDf6/aQYII1AYXIx3IsOgoGpKwmHq2GZ 7AXvbhXHwiGCa8qiI9L7xgT8vZrfw7LuqP9oe082Z6VkbZ++HJFb3gVRA NtXryo4N2Kll8m1JOMSAg8fRXzUu3MHdbDeBw8C81kWK2LfVqxdphMvhg IICYv5oOtMIeNAK6UQc3YAGPNNVEnkdwXqRa2DVJMadtvRKySJAtp/csW OrUtZZv9LGmZJf47RzdWCRyskfqjxGmqHREy8VFDaOJW/Y4I7v/k+KNzj A==; X-CSE-ConnectionGUID: CBUEd3ybT5apdCkxvZJGnA== X-CSE-MsgGUID: xnbKGYmhRBahYlBaROOenA== X-ThreatScanner-Verdict: Negative X-IronPort-AV: E=Sophos;i="6.04,327,1695711600"; d="scan'208";a="244887934" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 03 Jan 2024 06:48:57 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Wed, 3 Jan 2024 06:48:30 -0700 Received: from [10.159.245.205] (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Wed, 3 Jan 2024 06:48:28 -0700 Message-ID: Date: Wed, 3 Jan 2024 14:47:45 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 2/2] ARM: dts: at91: gardena-smart-gateway: Use DMA for USART3 Content-Language: en-US, fr-FR To: , Alexandre Belloni , Claudiu Beznea , Conor Dooley , Krzysztof Kozlowski , Rob Herring , CC: Reto Schneider , Michael Zimmermann , , Ezra Buehler References: <20240102161839.702625-1-ezra.buehler@husqvarna.com> <20240102161839.702625-3-ezra.buehler@husqvarna.com> From: Nicolas Ferre Organization: microchip In-Reply-To: <20240102161839.702625-3-ezra.buehler@husqvarna.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240103_054902_824629_55AC19F5 X-CRM114-Status: GOOD ( 15.91 ) 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-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 02/01/2024 at 17:18, ezra@easyb.ch wrote: > From: Ezra Buehler > > The AT91SAM9G25-based GARDENA smart Gateway uses USART3 (ttyS1) to > communicate (over PPP, at 115200 baud) with the radio module. > > We have been experiencing packet loss and seeing errors on the ppp0 > interface. Enabling DMA for the serial interface resolves the issues. > > Co-Developed-by: Michael Zimmermann > Signed-off-by: Michael Zimmermann > Signed-off-by: Ezra Buehler Acked-by: Nicolas Ferre Thanks! Best regards, Nicolas > --- > .../boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts b/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts > index 92f2c05c873f..af70eb8a3a02 100644 > --- a/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts > +++ b/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts > @@ -121,6 +121,8 @@ &usart2 { > }; > > &usart3 { > + atmel,use-dma-rx; > + atmel,use-dma-tx; > status = "okay"; > > pinctrl-0 = <&pinctrl_usart3 > -- > 2.39.2 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel