From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) (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 ED62762E for ; Tue, 30 Aug 2022 08:16:07 +0000 (UTC) Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 3A4296601E8E; Tue, 30 Aug 2022 09:16:05 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1661847366; bh=RhuI1yWgn6gBmBPlwuNO0blBF1o/qMPbrqYFzGXSElc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=I9oUDCAEb9L0xz0DoNFHbqEET2qL1Ufphb+wJ8rP9EgCO/z/ANEHOT9UkG/LBRDwS oITPjXyUNlvIFwVc0RFlLK7qJTFrzAs/gnFnDEEupkCPEGCi8oandZaRei1xIHsPuH ulV+22EC5nFoI2olm6FomJ9ebFU0CWHsvsOWbWCfBtVBk/iTuLbJgRHAGeQXmBnVDx s3/Z4e1iZ8Nao3dY6kaf9UTPqO26x0gZXuj4ae7GCqLWy6YdTttt77s9R6h1tBrOyI krCPKCybm6XUoR/GTi+V/oLbpPD//aIOO+fh/uB1T7BpRsqLxY2AFD4+NsVmd5JVQ7 ocVQ9+UvWrGCg== Message-ID: Date: Tue, 30 Aug 2022 10:16:02 +0200 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH v4 5/6] iommu/mediatek: Improve safety for mediatek,smi property in larb nodes Content-Language: en-US To: Yong Wu , Joerg Roedel , Matthias Brugger , Will Deacon Cc: Robin Murphy , iommu@lists.linux.dev, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mingyuan.ma@mediatek.com, yf.wang@mediatek.com, libo.kang@mediatek.com, chengci.xu@mediatek.com, youlin.pei@mediatek.com, anan.sun@mediatek.com, xueqi.zhang@mediatek.com, Guenter Roeck , Dan Carpenter References: <20220824064306.21495-1-yong.wu@mediatek.com> <20220824064306.21495-6-yong.wu@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20220824064306.21495-6-yong.wu@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Il 24/08/22 08:43, Yong Wu ha scritto: > No functional change. Just improve safety from dts. > > All the larbs that connect to one IOMMU must connect with the same > smi-common. This patch checks all the mediatek,smi property for each > larb, If their mediatek,smi are different, it will return fails. > Also avoid there is no available smi-larb nodes. > > Suggested-by: Guenter Roeck > Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno