From patchwork Thu May 2 08:10:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabien DESSENNE X-Patchwork-Id: 10926271 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 595C31390 for ; Thu, 2 May 2019 08:10:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 49F7F28C7F for ; Thu, 2 May 2019 08:10:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3D4DB28DDA; Thu, 2 May 2019 08:10:37 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 A231628C7F for ; Thu, 2 May 2019 08:10:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726405AbfEBIKg (ORCPT ); Thu, 2 May 2019 04:10:36 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:10358 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726264AbfEBIKf (ORCPT ); Thu, 2 May 2019 04:10:35 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x42828JO023659; Thu, 2 May 2019 10:10:20 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=znP6MuezR8h50yNvDKE3YfX4j0A9PVjb37XPJEMCwbU=; b=OJHuatp2xrdeg8+qugcJrJ67kI+rH6UoWzukJgyz7kVOnFXLq2v/AYNHU1H6YFAeV6pR Q1j0QRnAuhFy5hLFZnKdJuhT+ue6DfmoBOS00aSARGCb47HJBiD4HUJ/0/v91wpqkKuw bVPGB1r/ZE9ZTwb4HXmV7U/DknaquIjx33ckC6yWzyKr9/O8ZZIqy0/AGayqhXDY+u2P MUHY///UWAM+8kI7cRnsAPD5Gw0gtDOul6U/pQICssUSBFKDYsA3wQzfhjxn1ZODIgP+ 2LN7CZZMZGGuoAJh1W2HX7wGw4AH95WZl13UoANBD24JlKxnqB2ZrNi31bhHcbUo8iny zw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2s6xhbf3q9-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 02 May 2019 10:10:20 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2152B3F; Thu, 2 May 2019 08:10:19 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas24.st.com [10.75.90.94]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id E2EB3FD8; Thu, 2 May 2019 08:10:18 +0000 (GMT) Received: from SAFEX1HUBCAS21.st.com (10.75.90.45) by Safex1hubcas24.st.com (10.75.90.94) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 2 May 2019 10:10:18 +0200 Received: from localhost (10.129.4.86) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 2 May 2019 10:10:18 +0200 From: Fabien Dessenne To: Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Ohad Ben-Cohen , Bjorn Andersson , , , , , CC: Fabien Dessenne , Loic Pallardy , Arnaud Pouliquen , "Ludovic Barre" , Benjamin Gaignard Subject: [PATCH v3 2/8] dt-bindings: remoteproc: add bindings for stm32 remote processor driver Date: Thu, 2 May 2019 10:10:00 +0200 Message-ID: <1556784606-3016-3-git-send-email-fabien.dessenne@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1556784606-3016-1-git-send-email-fabien.dessenne@st.com> References: <1556784606-3016-1-git-send-email-fabien.dessenne@st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.4.86] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-02_03:,, signatures=0 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 Add the device tree bindings document for the stm32 remoteproc devices. Signed-off-by: Fabien Dessenne --- .../devicetree/bindings/remoteproc/stm32-rproc.txt | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt diff --git a/Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt b/Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt new file mode 100644 index 0000000..a495757 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt @@ -0,0 +1,63 @@ +STMicroelectronics STM32 Remoteproc +----------------------------------- +This document defines the binding for the remoteproc component that loads and +boots firmwares on the ST32MP family chipset. + +Required properties: +- compatible: Must be "st,stm32mp1-m4" +- reg: Address ranges of the RETRAM and MCU SRAM memories used by the + remote processor. +- resets: Reference to a reset controller asserting the remote processor. +- st,syscfg-holdboot: Reference to the system configuration which holds the + remote processor reset hold boot + 1st cell: phandle of syscon block + 2nd cell: register offset containing the hold boot setting + 3rd cell: register bitmask for the hold boot field +- st,syscfg-tz: Reference to the system configuration which holds the RCC trust + zone mode + 1st cell: phandle to syscon block + 2nd cell: register offset containing the RCC trust zone mode setting + 3rd cell: register bitmask for the RCC trust zone mode bit + +Optional properties: +- interrupts: Should contain the watchdog interrupt +- mboxes: This property is required only if the rpmsg/virtio functionality + is used. List of phandle and mailbox channel specifiers: + - a channel (a) used to communicate through virtqueues with the + remote proc. + Bi-directional channel: + - from local to remote = send message + - from remote to local = send message ack + - a channel (b) working the opposite direction of channel (a) + - a channel (c) used by the local proc to notify the remote proc + that it is about to be shut down. + Unidirectional channel: + - from local to remote, where ACK from the remote means + that it is ready for shutdown +- mbox-names: This property is required if the mboxes property is used. + - must be "vq0" for channel (a) + - must be "vq1" for channel (b) + - must be "shutdown" for channel (c) +- memory-region: List of phandles to the reserved memory regions associated with + the remoteproc device. This is variable and describes the + memories shared with the remote processor (eg: remoteproc + firmware and carveouts, rpmsg vrings, ...). + (see ../reserved-memory/reserved-memory.txt) +- st,syscfg-pdds: Reference to the system configuration which holds the remote + processor deep sleep setting + 1st cell: phandle to syscon block + 2nd cell: register offset containing the deep sleep setting + 3rd cell: register bitmask for the deep sleep bit +- st,auto_boot: If defined, when remoteproc is probed, it loads the default + firmware and starts the remote processor. + +Example: + m4_rproc: m4@38000000 { + compatible = "st,stm32mp1-m4"; + reg = <0x00000000 0x10000>, + <0x10000000 0x40000>, + <0x30000000 0x40000>; + resets = <&rcc MCU_R>; + st,syscfg-holdboot = <&rcc 0x10C 0x1>; + st,syscfg-tz = <&rcc 0x000 0x1>; + };