From patchwork Wed Mar 27 05:14:43 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: 10872531 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 4C10714DE for ; Wed, 27 Mar 2019 05:15:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 33D4728C75 for ; Wed, 27 Mar 2019 05:15:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 243C828D55; Wed, 27 Mar 2019 05:15:07 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 44B5928C75 for ; Wed, 27 Mar 2019 05:15:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725791AbfC0FPF (ORCPT ); Wed, 27 Mar 2019 01:15:05 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:40269 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725613AbfC0FPC (ORCPT ); Wed, 27 Mar 2019 01:15:02 -0400 Received: by mail-pg1-f195.google.com with SMTP id u9so9361377pgo.7 for ; Tue, 26 Mar 2019 22:15:01 -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=ykf4Vr8+YQBu3HM6TlXuYVSTHQZbeQlUQPTrMnE/By4=; b=CVBOlK1q8uHo6tNUBZaTCOsxGeGTOVtpB6BfpXH+/iXWEv+xbGh6pYlYpInM8JB0Fa v7o4UcUfADVxYgmwqXSaMBLGA3Uv6oWl7I9lsh7AamiV9b+9RDaA+j9EGWwMzBae5fBa sXCJVGTcsikC6RNfuGMPWMWoU9ckjuitzQ+g4= 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=ykf4Vr8+YQBu3HM6TlXuYVSTHQZbeQlUQPTrMnE/By4=; b=p+JsAPaste923EH7GUisj6ZUurHDR56UqNIQiTWcIVTZok6I2sMDo+KsBMzUNda8pW 3TenZE9pD/DyRmbFHG7yzytogkJXDi8AM1g34pOas60B6O/WBZh/XX0ZpHda7YCWSsbr PrX7Z6cv6+RF9lZYfsQnmVR8JfXXes3F88q+kYFwH18+rr/6Sj7hPas6LDPnWUpQQ28x eTAYxn1HmvpLMktOAImaaf2V16apqSPa8SS5/58gD8gX4bCsgtCJJ2mL8mIR6HJA+L3q DdDhx+hVQ3hv1Lv87FUmRE2af8wQs3iwKwnOer7EUR0fn1N3wNfagGwXI74Urq/V9FGM MPSg== X-Gm-Message-State: APjAAAVo5nsK+BmN1ULhoCE8+xxv6wC8+Gp91oFCJCekR3QoSSsBG/5P VXglcUMv5wW2Ca2FTn4hEuoAm6ld9gs= X-Google-Smtp-Source: APXvYqyP7GLs2iBEgAEnBvpKsM8ipQ7h2tK6i4K30swdkFxy2VhaZMOaRa6ufIxQWtoPOvyZW615NQ== X-Received: by 2002:a62:b40b:: with SMTP id h11mr24147278pfn.133.1553663701403; Tue, 26 Mar 2019 22:15:01 -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 k72sm58622609pfb.122.2019.03.26.22.14.58 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 26 Mar 2019 22:15:00 -0700 (PDT) From: Peter Shih Cc: Pi-Hsun Shih , Erin Lo , Rob Herring , Ohad Ben-Cohen , Bjorn Andersson , Rob Herring , Mark Rutland , Matthias Brugger , linux-remoteproc@vger.kernel.org (open list:REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v7 1/7] dt-bindings: Add a binding for Mediatek SCP Date: Wed, 27 Mar 2019 13:14:43 +0800 Message-Id: <20190327051450.16222-2-pihsun@chromium.org> X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog In-Reply-To: <20190327051450.16222-1-pihsun@chromium.org> References: <20190327051450.16222-1-pihsun@chromium.org> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.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 Signed-off-by: Pi-Hsun Shih Reviewed-by: Rob Herring --- Changes from v6: - No change. 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"; + };