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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 DFD99C04AB6 for ; Mon, 3 Jun 2019 03:46:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B881127B17 for ; Mon, 3 Jun 2019 03:46:04 +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="PBKKS9kh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726816AbfFCDqE (ORCPT ); Sun, 2 Jun 2019 23:46:04 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:43044 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726761AbfFCDqC (ORCPT ); Sun, 2 Jun 2019 23:46:02 -0400 Received: by mail-pg1-f196.google.com with SMTP id f25so7450788pgv.10 for ; Sun, 02 Jun 2019 20:46:02 -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=hEJonRLI9nF5eFhZjIysE4hQm1TY3MN4XBFUsywjVOo=; b=PBKKS9khHDKTfo4Vf1IK0e2eum8/Ah3ZBIpZzQcK8zUg2CerP2x9B5evBBi3dPmM8b mrMMtVjH2WQUEdWDYEQ7NotqtpAHB2Zs/AcNu42Ll5QUZ/+XjY5jgh+7TjRBFdPUcYEA dRJ5vLVem+8zgDc4jTjVqTr4qGCVzB9RC+8Ik= 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=hEJonRLI9nF5eFhZjIysE4hQm1TY3MN4XBFUsywjVOo=; b=iJIRWPQvt6FyXQtxSk9P9PRZDWBqfm4JABszrBDypex/SPc1yY4zCD6R6z+zIB4jT+ J6SbxZ8Lorc9Lh1gYNmgrGS4xl8buPPgw4jgcTsFjyRQo6nPvzn8zGQaEpI55XSqHbK3 nRcZilLEkj7/EJSSTnwVAJj/ENlzPTeRXSXG80Eq0Wq8+hAjZXQdOEa+Rksv55tz4ajK lin8G4ggFFZoBxiIyrx7A1XyHV2T1QFbJFl9J4dMJR/v82aoj+IHqWh95YWk1As8OkLx mYs4EbwaokhRvWlBJJ713S5T0EgW9YHTwRsz5oEk71tUZHbvEO6Gu2Jvl7lj9npdKYfI zY3A== X-Gm-Message-State: APjAAAX8qDZuSoSUgTh2bnFq0BRMuHmoENxDV6N9fU3kT7iThI9Wi0ai r6Hye3makro/3OLplP3msKvnzQ== X-Google-Smtp-Source: APXvYqwWhD6dJQ7e7U6XXknP+lCqRI/wQ2l7stAOB/LOcEtN9grXtAVkkkFLAih8hwbZy4nolot6NA== X-Received: by 2002:a17:90a:7343:: with SMTP id j3mr26398048pjs.84.1559533561988; Sun, 02 Jun 2019 20:46:01 -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 i73sm11878960pje.9.2019.06.02.20.45.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 02 Jun 2019 20:46:01 -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 v10 1/7] dt-bindings: Add a binding for Mediatek SCP Date: Mon, 3 Jun 2019 11:45:06 +0800 Message-Id: <20190603034529.154969-2-pihsun@chromium.org> X-Mailer: git-send-email 2.22.0.rc1.257.g3120a18244-goog In-Reply-To: <20190603034529.154969-1-pihsun@chromium.org> References: <20190603034529.154969-1-pihsun@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 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"; + }; -- 2.22.0.rc1.257.g3120a18244-goog