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,USER_AGENT_GIT autolearn=unavailable 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 63348C433FE for ; Tue, 14 Sep 2021 11:37:47 +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 2672E610D1 for ; Tue, 14 Sep 2021 11:37:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2672E610D1 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 F049A607D3; Tue, 14 Sep 2021 11:37:46 +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 r_bioAY2Vpxd; Tue, 14 Sep 2021 11:37:46 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp3.osuosl.org (Postfix) with ESMTPS id D1C89607A1; Tue, 14 Sep 2021 11:37:45 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id AECE8C0011; Tue, 14 Sep 2021 11:37:45 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id D7C93C000D for ; Tue, 14 Sep 2021 11:37:43 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id BA65180F53 for ; Tue, 14 Sep 2021 11:37:43 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jNLk9G23czu6 for ; Tue, 14 Sep 2021 11:37:43 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by smtp1.osuosl.org (Postfix) with ESMTPS id E4E1180E27 for ; Tue, 14 Sep 2021 11:37:42 +0000 (UTC) X-UUID: f528463a147242c182cee0127a07c0e7-20210914 X-UUID: f528463a147242c182cee0127a07c0e7-20210914 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 999545326; Tue, 14 Sep 2021 19:37:40 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 14 Sep 2021 19:37:39 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 14 Sep 2021 19:37:37 +0800 From: Yong Wu To: Krzysztof Kozlowski , Rob Herring , Matthias Brugger Subject: [PATCH v4 02/13] dt-bindings: memory: mediatek: Add mt8195 smi sub common Date: Tue, 14 Sep 2021 19:36:52 +0800 Message-ID: <20210914113703.31466-3-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210914113703.31466-1-yong.wu@mediatek.com> References: <20210914113703.31466-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, yi.kuo@mediatek.com, srv_heupstream@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Krzysztof Kozlowski , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, anthony.huang@mediatek.com, ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Robin Murphy , Ikjoon Jang , 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" Add the binding for smi-sub-common. The SMI block diagram like this: IOMMU | | smi-common ------------------ | .... | larb0 larb7 <-max is 8 The smi-common connects with smi-larb and IOMMU. The maximum larbs number that connects with a smi-common is 8. If the engines number is over 8, sometimes we use a smi-sub-common which is nearly same with smi-common. It supports up to 8 input and 1 output(smi-common has 2 output) Something like: IOMMU | | smi-common --------------------- | | ... larb0 sub-common ... <-max is 8 ----------- | | ... <-max is 8 too. larb2 larb5 We don't need extra SW setting for smi-sub-common, only the sub-common has special clocks need to enable when the engines access dram. If it is sub-common, it should have a "mediatek,smi" phandle to point to its smi-common. meanwhile the sub-common only has one gals clock. Signed-off-by: Yong Wu --- change note: add "else mediatek,smi: false". --- .../mediatek,smi-common.yaml | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml index 602592b6c3f5..3a82b0b27fa0 100644 --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml @@ -38,6 +38,7 @@ properties: - mediatek,mt8192-smi-common - mediatek,mt8195-smi-common-vdo - mediatek,mt8195-smi-common-vpp + - mediatek,mt8195-smi-sub-common - description: for mt7623 items: @@ -67,6 +68,10 @@ properties: minItems: 2 maxItems: 4 + mediatek,smi: + $ref: /schemas/types.yaml#/definitions/phandle + description: a phandle to the smi-common node above. Only for sub-common. + required: - compatible - reg @@ -93,6 +98,29 @@ allOf: - const: smi - const: async + - if: # only for sub common + properties: + compatible: + contains: + enum: + - mediatek,mt8195-smi-sub-common + then: + required: + - mediatek,smi + properties: + clock: + items: + minItems: 3 + maxItems: 3 + clock-names: + items: + - const: apb + - const: smi + - const: gals0 + else: + properties: + mediatek,smi: false + - if: # for gen2 HW that have gals properties: compatible: -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu