From patchwork Thu Sep 5 06:19:34 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: 11132181 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8DBB11510 for ; Thu, 5 Sep 2019 06:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E64421743 for ; Thu, 5 Sep 2019 06:19:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="S9vJ63v0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731433AbfIEGT5 (ORCPT ); Thu, 5 Sep 2019 02:19:57 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:43996 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731393AbfIEGT4 (ORCPT ); Thu, 5 Sep 2019 02:19:56 -0400 Received: by mail-pf1-f194.google.com with SMTP id d15so1015530pfo.10 for ; Wed, 04 Sep 2019 23:19:56 -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=eOou/Ud0sJZIJ3w0AOB8xY062SjRhhJ5K1s/AP/xaTc=; b=S9vJ63v0iIy8Jh4yKByDDuNyqPHdPhOEfaPBkj+7/MMDM44zSp5bRqCVFV82gslUPy CjKg1Z8NZHVn81a2lj3jrJQ5i7+oPiJUXPBEWeVSFzIZEF48Sr9F1baOrsPwAtfCMlpf NOtIg7xZiSjOUyyjkCy6U98UeGeYoyDI8EEE4= 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=eOou/Ud0sJZIJ3w0AOB8xY062SjRhhJ5K1s/AP/xaTc=; b=AhZPURWsyZ2WEOnegiefOsyfeHHSqJLZfHMDS0xC9kBN9gWfJOLMlGMwXRSZdnJqBT 21baK3Sr50/3A3BO6wLPtFNcRKq24L2vDayhP4RBiDeY9+aFtrSuYLfYlatkRI90bMLy GjNqeR4Ni1hdrHMlQ8XarfKxZOxIUoPGSfkF1omog0FXf2h+XwPFYtMlxRmTJWusZR/p w4xny9yex6otaE6O1Zk654cdUN7qRsXzV+t6p+vP4oJBcMeH5FsfLctDF+yd3bXv3U/c LucryYR5jTVgmbyw5a9S+W8drEzWDJxxeP0/Mh44A7ScCuC2VIteRgm4jFhZ5lj+r+T5 XT+Q== X-Gm-Message-State: APjAAAXbsKnyRPeXc3yCkqNtNrqHMzAmLw+VSDR/JAaJTT+I8gUHxgEg 3nmC5kTuMff3HILqAt6lbbDADQ== X-Google-Smtp-Source: APXvYqzS3/CTlFwcE72Yz2aQEiu4FXUp+BwnMqGXCJpYKZNTJeQb7nblnWkoSLISnNjodE2+jVwYwg== X-Received: by 2002:a62:ce8a:: with SMTP id y132mr1821500pfg.240.1567664396084; Wed, 04 Sep 2019 23:19:56 -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 p14sm443445pfn.138.2019.09.04.23.19.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2019 23:19:55 -0700 (PDT) From: Pi-Hsun 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 v19 1/4] dt-bindings: Add a binding for Mediatek SCP Date: Thu, 5 Sep 2019 14:19:34 +0800 Message-Id: <20190905061943.242729-2-pihsun@chromium.org> X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog In-Reply-To: <20190905061943.242729-1-pihsun@chromium.org> References: <20190905061943.242729-1-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 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 v18, v17, v16, v15, v14, v13, v12, v11, v10, v9, v8, v7, 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"; + };