From nobody Mon Feb 9 22:03:51 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 9E91433030D; Tue, 23 Dec 2025 10:56:38 +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=1766487402; cv=none; b=HLaQ0EECbTZC5xWrJWeBzpTDv8hwSm+GKpafpmUQS/pATIeskVZDVY+C8knSBA9AMIlA9PNK83xht2rA8C0uzYmpTo5cXWnQB4BRwgmQ25/i7WECh18FtL3aJIvKvR28/qQkxkoG4IgzpF4FMDIB/hKy+pr92o9VaLXdBZ8YpYQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766487402; c=relaxed/simple; bh=lWqGwdFl8tS+18dKv4LLOCagY7vhQ7BLpdb1qUJbpzM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=H6t7iSBWYp+12+pKAALTS4okxowXS+jjGdAyVrpn/Q1rdx3g6h6h8VsfHAriGvQmYg3J4L1x4PYTHAh957DmhG5+SEv/o4hAMVMflpRZ03QpiYuXWK6AbGXOAkSec/oPZvSWdo6twuqDKrUWnlgbFO57mbdc5rL3xn7COn3OC3Q= 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=h/TQqO9A 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="h/TQqO9A" Received: from localhost (localhost [127.0.0.1]) by smtp.simply.com (Simply.com) with ESMTP id 4dbBlF12T1z1DR2j; Tue, 23 Dec 2025 11:56:25 +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 4dbBlD5wgvz1DDN0; Tue, 23 Dec 2025 11:56:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gaisler.com; s=simplycom2; t=1766487385; bh=OGb0u8/dBE5mIlzxDiXljrEL8G7LO8iwH9wpS1qUMUM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=h/TQqO9AkSfLKuYnKXBbNDGFiKjwYFl6ljWbsI9QcVQdgXCnvgfbZRq2AtCedisND eFu2pSJzl8CII72cNxNf2Vkgp43TYCroa6DRKPXyri+rHSV2/qOGjGIjkX4xKkDi2O e+oyyzstjHA0ijFNzD0B2YR3lruHhWLg20ugadda8DjtuQ8cZSMYuQ1AmS49DyQ/AT 930AZ0OU+TIzoiINd7PNrA2GIhruQuNhAkOmLUyurCAeyoyY6oS+Dk7Cvse4fC/y2z nZ/LpAU4iLMh6sY8T8/AHK6m8n1+Q3MPHeI+rlHggfdmC7AJW8ks4v/dKp92Es+PUI 7WBeqz5sadJiA== 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 v2 07/10] can: grcan: set DMA mask for GRCAN and GRCANFD to 32-bit Date: Tue, 23 Dec 2025 11:56:01 +0100 Message-ID: <20251223105604.12675-8-arun.muthusamy@gaisler.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251223105604.12675-1-arun.muthusamy@gaisler.com> References: <20251223105604.12675-1-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 8a6c59473cf4..cdb9498cf783 100644 --- a/drivers/net/can/grcan.c +++ b/drivers/net/can/grcan.c @@ -1753,6 +1753,13 @@ 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