From nobody Tue Feb 10 11:23:28 2026 Received: from smtp-out3.simply.com (smtp-out3.simply.com [94.231.106.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3AC4343DA55; Thu, 22 Jan 2026 12:10:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=94.231.106.210 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769083862; cv=none; b=hpWWxocE9s0e3a2UYIGN87nyhcAW9PyLTDgT+b3TmGOET1FcNVUkmAInAr1vWoYiQsQpetVv7M/BxKJGS+RVHWCAIBnAkfU1ZxVjGUtHb59qjJM0p3X8SWA8Drq4VfN29tuSQGiqraYJktmI0gxsKjYxPHdZRGU263mwmnPyG0Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769083862; c=relaxed/simple; bh=vd7GadClo/RlrvKYnks9oUL4JQToH3YvUgrlmb9pj/4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MP+Y1/wR++YAo9Zktlo+H77L9G85xD1eGCr2ah544SWCNbO7ZiUXO5T/YXICxJ3iftxlZtrW8zlgbYpO1Cxu6mFS4fjIAVVK8K2sy9lE7Fwrm4bbX9VyHQnR61GkG80x11Q0//NfQ+sKKBbC0iCp93MonttSB94huwr5PScPyVY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gaisler.com; spf=pass smtp.mailfrom=gaisler.com; dkim=fail (0-bit key) header.d=gaisler.com header.i=@gaisler.com header.b=OHP+mcX/ reason="key not found in DNS"; arc=none smtp.client-ip=94.231.106.210 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gaisler.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gaisler.com Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=gaisler.com header.i=@gaisler.com header.b="OHP+mcX/" Received: from localhost (localhost [127.0.0.1]) by smtp.simply.com (Simply.com) with ESMTP id 4dxfzD6Mp9z1FlXw; Thu, 22 Jan 2026 13:10:48 +0100 (CET) Received: from d-5xj5g74.got.gaisler.com.com (h-98-128-223-123.NA.cust.bahnhof.se [98.128.223.123]) by smtp.simply.com (Simply.com) with ESMTPA id 4dxfzD3pm5z1Fgcl; Thu, 22 Jan 2026 13:10:48 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gaisler.com; s=simplycom2; t=1769083848; bh=LvNXlj/JjGmCmxw9Wh5XNyDZed3gle08v8TWEGLebtQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OHP+mcX/8wsU7uZfHoJY6br9vYqjHV5yKd7fKHb4EFcYD7funhlWy6coRB8gqQ/6z IE2Z78+maYnHksTCcs/Syy7zb1sD/XeC+NmKwx7P9tIZgB+k38kMBPEE3zdrtmpDWa slG+8freLPdYTxGVnGclp/xNbpXE0+FMc3hMvEyMrPcaKi05U2NpoRTb3Jjxj0TqBH F9SOo5cPo+9pBZ5T6+ZK4Dpt39vxb0rQK1vh5DeSS1xwBM+Z9xyOqLBcQa+z1hO8ZE pce/C0TwpGEsBDfqcf2FQKo62m0GFfTEcTOpqEGytShpf6rqfpRILqsjky4oPTUKZd gxqWqp8gjuWOQ== From: Arun Muthusamy To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, mkl@pengutronix.de, mailhol@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-can@vger.kernel.org, Daniel Hellstrom , Arun Muthusamy Subject: [PATCH v3 09/15] can: grcan: set DMA mask for GRCAN and GRCANFD to 32-bit Date: Thu, 22 Jan 2026 13:10:32 +0100 Message-ID: <20260122121038.7910-10-arun.muthusamy@gaisler.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260122121038.7910-1-arun.muthusamy@gaisler.com> References: <20260122121038.7910-1-arun.muthusamy@gaisler.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Daniel Hellstrom Sets the DMA mask for GRCAN and GRCANFD devices to 32-bit. Setting the DMA mask and coherent DMA mask to 32-bit ensures proper memory addressing during DMA operations Signed-off-by: Daniel Hellstrom Signed-off-by: Arun Muthusamy --- drivers/net/can/grcan.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c index e2415529db45..a2a5a5c868ff 100644 --- a/drivers/net/can/grcan.c +++ b/drivers/net/can/grcan.c @@ -1747,6 +1747,13 @@ static int grcan_probe(struct platform_device *ofdev) goto exit_error; } =20 + /* On 64-bit systems.. GRCAN and GRCANFD can only address 32-bit */ + err =3D dma_set_mask_and_coherent(&ofdev->dev, DMA_BIT_MASK(32)); + if (err) { + dev_err_probe(&ofdev->dev, err, "No usable DMA configuration.\n"); + goto exit_error; + } + irq =3D irq_of_parse_and_map(np, GRCAN_IRQIX_IRQ); if (!irq) { dev_err(&ofdev->dev, "no irq found\n"); --=20 2.51.0