From patchwork Wed Sep 4 06:16:39 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: 1157479 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="lo30L7q4"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46NYWL4Cxqz9sNT for ; Wed, 4 Sep 2019 16:17:02 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728815AbfIDGRC (ORCPT ); Wed, 4 Sep 2019 02:17:02 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:41127 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728784AbfIDGRB (ORCPT ); Wed, 4 Sep 2019 02:17:01 -0400 Received: by mail-pg1-f196.google.com with SMTP id x15so10635826pgg.8 for ; Tue, 03 Sep 2019 23:17:01 -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=Uzakui8viTETwW9jPht4pssIBM6YeQuIbX1083r5IEs=; b=lo30L7q4OAnqKuFHx/jfFe5LMFGNxW3a60tixFPIGjRHQJRbQOF23IYNpzJcMjRTVq 2Apa9i5yXzA4Qs8/cbW70m3UX/jMB/vlNiJh6rFB5wqTmb8p7s/pr83xMkFqHyj+6BwT OMDumxpyjObtXBCv9eHgDI1Mf+fIj/s/UJ1Mc= 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=Uzakui8viTETwW9jPht4pssIBM6YeQuIbX1083r5IEs=; b=iWOP+GXZKA78S86szV4RTkIO2cNmhljUJOVtq9PaGFY+EMbEYKgxkqoVbkpHDxTAgB lI1ZhM0JXei6RxVrS42MK6ohvrL3tH4uNaWQXdqG9fV7joHvc6Y7HFIM/UxGInxeT8IO FBlAJDqiqMhVsaXSg0eA1Hg3iQKmnAzWqJEdOrintJh95KbdKLpxnAYLjIpPNrYHu+ep rH2lqtb9QyoZnBWgm5h3Qkluw6xYWXNjj2YmiK7+BY+fSDoTjyHCO1V0krGfm0S4MUEI UNBkqWC8geOtmCSW7mG1oa5JkLfx1FQK4e8W54PB/XXgKx8T2L3CCEJH+aR0v24N2Ccb z8AQ== X-Gm-Message-State: APjAAAVMH5L2fjmhgddw51M7JuYyhnmpmnPLknKFR/JcQqM7HSo2BwFk Qp2sI5oV5hzOrRSZnWqxNDPmMw== X-Google-Smtp-Source: APXvYqznpx34k/PFtlLfTr2KZA144YWdk/hb9j75wdV4FzNEiNNRVy0S6ME9y3Lxmj4G5Tve2FO2Vw== X-Received: by 2002:a65:640d:: with SMTP id a13mr33335797pgv.256.1567577821026; Tue, 03 Sep 2019 23:17:01 -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 r2sm27248750pfq.60.2019.09.03.23.16.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Sep 2019 23:17:00 -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 v17 1/5] dt-bindings: Add a binding for Mediatek SCP Date: Wed, 4 Sep 2019 14:16:39 +0800 Message-Id: <20190904061649.69099-2-pihsun@chromium.org> X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog In-Reply-To: <20190904061649.69099-1-pihsun@chromium.org> References: <20190904061649.69099-1-pihsun@chromium.org> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@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 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"; + };