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 X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C043EC4338F for ; Fri, 13 Aug 2021 06:55:55 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7DE0C600D4 for ; Fri, 13 Aug 2021 06:55:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7DE0C600D4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 5FACA60B9E; Fri, 13 Aug 2021 06:55:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TufiXKchQfWY; Fri, 13 Aug 2021 06:55:51 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 316C06078F; Fri, 13 Aug 2021 06:55:51 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 047E2C0010; Fri, 13 Aug 2021 06:55:51 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C7641C000E for ; Fri, 13 Aug 2021 06:55:49 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id A96C660B85 for ; Fri, 13 Aug 2021 06:55:49 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6ZeaTFX5vXst for ; Fri, 13 Aug 2021 06:55:49 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by smtp3.osuosl.org (Postfix) with ESMTPS id F1DD9607D4 for ; Fri, 13 Aug 2021 06:55:48 +0000 (UTC) X-UUID: 4bb8f6a2d7584e2e8c1406bb51c0d472-20210813 X-UUID: 4bb8f6a2d7584e2e8c1406bb51c0d472-20210813 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1442998272; Fri, 13 Aug 2021 14:55:45 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 13 Aug 2021 14:55:43 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 13 Aug 2021 14:55:42 +0800 From: Yong Wu To: Joerg Roedel , Rob Herring , Matthias Brugger , Will Deacon , Robin Murphy Subject: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Date: Fri, 13 Aug 2021 14:53:11 +0800 Message-ID: <20210813065324.29220-17-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210813065324.29220-1-yong.wu@mediatek.com> References: <20210813065324.29220-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, Krzysztof Kozlowski , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, chao.hao@mediatek.com, anan.sun@mediatek.com, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" For MM IOMMU, We always add device link between smi-common and IOMMU HW. In mt8195, we add smi-sub-common. Thus, if the node is sub-common, we still need find again to get smi-common, then do device link. Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index a4479916ad33..a72241724adb 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -845,6 +845,17 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, if (!smicomm_node) return -EINVAL; + /* Find smi-common again if this is smi-sub-common */ + if (of_property_read_bool(smicomm_node, "mediatek,smi_sub_common")) { + of_node_put(smicomm_node); /* put the sub common */ + + smicomm_node = of_parse_phandle(smicomm_node, "mediatek,smi", 0); + if (!smicomm_node) { + dev_err(dev, "sub-comm has no common.\n"); + return -EINVAL; + } + } + plarbdev = of_find_device_by_node(smicomm_node); of_node_put(smicomm_node); data->smicomm_dev = &plarbdev->dev; -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu