From patchwork Mon Mar 11 06:34:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pi-Hsun Shih X-Patchwork-Id: 10846767 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 45AE81515 for ; Mon, 11 Mar 2019 06:35:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E23328D3B for ; Mon, 11 Mar 2019 06:35:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 21B6E28EDB; Mon, 11 Mar 2019 06:35:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C5F9528D3B for ; Mon, 11 Mar 2019 06:35:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7a7gN3r38+HBWZLSmHwGTAE3FZC7Ryyn7JIk6dGTdSc=; b=ODpAWNtgDxTHJk UofL1b9f79cBVjF8OFBxTpH3oWQ/XRhshXfJ7igu4aMhEPq8qT5Wd0zdaRtJV4or7yuZUBAUZ2ymu Dq9ldmylSdobLmnbYjKbVpMzyCRi3l0ZpeJngXR22hnVYSiVOjheqk+lSKcYc47YGHTNHUSjmAzww TgYot/v+DHgoYfpnX6GCrC639MZchHIy+tBeSTsCQzk9f156SrQbMNClYVPjcNcO+K4iVEm3VXpnG rhaui3hea+dmDydMoGPqRq4oLhWqhLNORNT6GgXo9cUdBIwiIfUBrUKtSsbg5VYqed8XPvf8e7bj9 PIz1Rzw9hFl7us5rOuMw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h3EWy-0006ZE-Tm; Mon, 11 Mar 2019 06:35:24 +0000 Received: from mail-pg1-x544.google.com ([2607:f8b0:4864:20::544]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h3EWo-0006ND-6S for linux-mediatek@lists.infradead.org; Mon, 11 Mar 2019 06:35:15 +0000 Received: by mail-pg1-x544.google.com with SMTP id a22so3256669pgg.13 for ; Sun, 10 Mar 2019 23:35:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ssNQT9HiuVSvo4AmSqcCe40slJgH7PCwZwIQFMP2sww=; b=SwzRnbAjCUxkK+Z2mOzgRqIhTH5zHhEEy3yqvZE6FCwIiSNWRzhGKDzDcvA0j+1veQ AX6jPRdCvz5RjjVJ4i6uXoGrz8TVCmeE3r3jZP6qS30m1Yti7QvPgzNUnUrDE5tUEPev Fk0ukM//OLs69UhXx6eRcBzUuel+QJSnfflic= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ssNQT9HiuVSvo4AmSqcCe40slJgH7PCwZwIQFMP2sww=; b=b69ptRZ+UCKTXHl1Lca5WCU6Wve4buhdeCEcOJiLUCUDfBAPm/CilEM9y2z4aWOVF5 TS3Zu7KDUdVacn33QN7sulIpyhZodxniJCkjm6ihWLRy9mb9JKgCx77IM3GPRWZROF97 QbC/rLT/Zu17fDsT4uz0UUeTpfgorlj0+TT6Xfaqh+9Ma0CqRRXaoGy78G0kPg8hKIWi Jk+rtdXZOMwRYbzUcBE7LNXrlCU0cEVzkdoG0d10vL8VvLAjwjxPI9UizN2kGWjIE/F1 GV7PAKkuciaozvTx0U3y+e708STuNpOgvvjVPLD7yTIw90/3iGrp4goAIjRmn+IhzwE6 BCeQ== X-Gm-Message-State: APjAAAXUOI1vrE80nIoO+zPL6Fw47nWA/ckkJytu7ZeFSu3mFRurYLoQ MFPfz5aoNOO8GsO4wNBCSLqpmQ== X-Google-Smtp-Source: APXvYqwh7jw9WacyKmgDAfbO7xEF+urqCv/9vDCXPpCdXhptE4Ym0XyWp9gEJWoppKoqnLbHBSqhnQ== X-Received: by 2002:a17:902:8218:: with SMTP id x24mr7991172pln.219.1552286113466; Sun, 10 Mar 2019 23:35:13 -0700 (PDT) Received: from pihsun-z840.tpe.corp.google.com ([2401:fa00:1:10:7889:7a43:f899:134c]) by smtp.googlemail.com with ESMTPSA id p5sm6573040pfn.154.2019.03.10.23.35.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 10 Mar 2019 23:35:12 -0700 (PDT) From: Pi-Hsun Shih To: Subject: [PATCH v6 1/7] dt-bindings: Add a binding for Mediatek SCP Date: Mon, 11 Mar 2019 14:34:52 +0800 Message-Id: <20190311063458.137473-2-pihsun@chromium.org> X-Mailer: git-send-email 2.21.0.360.g471c308f928-goog In-Reply-To: <20190311063458.137473-1-pihsun@chromium.org> References: <20190311063458.137473-1-pihsun@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190310_233514_234876_AE4B6AE5 X-CRM114-Status: GOOD ( 15.05 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ohad Ben-Cohen , Mark Rutland , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Erin Lo , "open list:REMOTE PROCESSOR REMOTEPROC SUBSYSTEM" , open list , Bjorn Andersson , Rob Herring , "moderated list:ARM/Mediatek SoC support" , Pi-Hsun Shih , Matthias Brugger , "moderated list:ARM/Mediatek SoC support" Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Erin Lo Add a DT binding documentation of SCP for the MT8183 SoC from Mediatek. Signed-off-by: Erin Lo --- Changes from v5: - Remove dependency on CONFIG_RPMSG_MTK_SCP. Changes from v4: - Add detail of more properties. - Document the usage of mtk,rpmsg-name in subnode from the new design. Changes from v3: - No change. Changes from v2: - No change. I realized that for this patch series, there's no need to add anything under the mt8183-scp node (neither the mt8183-rpmsg or the cros-ec-rpmsg) for them to work, since mt8183-rpmsg is added directly as a rproc_subdev by code, and cros-ec-rpmsg is dynamically created by SCP name service. Changes from v1: - No change. --- .../bindings/remoteproc/mtk,scp.txt | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/mtk,scp.txt diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt b/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt new file mode 100644 index 000000000000..3ba668bab14b --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt @@ -0,0 +1,36 @@ +Mediatek SCP Bindings +---------------------------------------- + +This binding provides support for ARM Cortex M4 Co-processor found on some +Mediatek SoCs. + +Required properties: +- compatible Should be "mediatek,mt8183-scp" +- reg Should contain the address ranges for the two memory + regions, SRAM and CFG. +- reg-names Contains the corresponding names for the two memory + regions. These should be named "sram" & "cfg". +- clocks Clock for co-processor (See: ../clock/clock-bindings.txt) +- clock-names Contains the corresponding name for the clock. This + should be named "main". + +Subnodes +-------- + +Subnodes of the SCP represent rpmsg devices. The names of the devices are not +important. The properties of these nodes are defined by the individual bindings +for the rpmsg devices - but must contain the following property: + +- mtk,rpmsg-name Contains the name for the rpmsg device. Used to match + the subnode to rpmsg device announced by SCP. + +Example: + + scp: scp@10500000 { + compatible = "mediatek,mt8183-scp"; + reg = <0 0x10500000 0 0x80000>, + <0 0x105c0000 0 0x5000>; + reg-names = "sram", "cfg"; + clocks = <&infracfg CLK_INFRA_SCPSYS>; + clock-names = "main"; + };