From patchwork Tue Apr 16 14:58:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabien DESSENNE X-Patchwork-Id: 10903281 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 D252F1850 for ; Tue, 16 Apr 2019 14:59:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC5BC28717 for ; Tue, 16 Apr 2019 14:59:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A5D6A28738; Tue, 16 Apr 2019 14:59:50 +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=unavailable 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 43E5A28736 for ; Tue, 16 Apr 2019 14:59:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729819AbfDPO7e (ORCPT ); Tue, 16 Apr 2019 10:59:34 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:8970 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726037AbfDPO6v (ORCPT ); Tue, 16 Apr 2019 10:58:51 -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 x3GEsAYd004126; Tue, 16 Apr 2019 16:58:36 +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=yhxK43TKf4fm5yvx6PJi84ljGztxY/EMdZmIw+rEfWI=; b=1DF8cOPGYxlbiwr9P0C2F/WcIV+7HnrJgtrDabOkl1x1z1x5AAHDrX+OM9q/blHIdnVM VZb8KCUwQRvBJXd1WgKTgdhie+yzIFBvMm76Q5M4BONL8Nm56hJq027A4rXoLghZges3 QYvyxSny9oqT884EGMbTT069hJVPlFw906UqIT3pBGOOoJObX2cvUoSRqhPdXfZ68neU VdVIgcZG+a4N1s8ZGhe5WHs8y5wpeYZwLIYPrmFTQ7x6HCHYRJhoIMf1MYAbFnE45LN1 AKg5XK6GOZElUiQCumYKXPTzWYnyWeuQtCU+GmD0zvuztmDrrNh+7LVEcIfxqQkJbnr4 Vg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2rw1a5vyxt-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 16 Apr 2019 16:58:36 +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 2C89534; Tue, 16 Apr 2019 14:58:36 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 0C35B269B; Tue, 16 Apr 2019 14:58:36 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 16 Apr 2019 16:58:35 +0200 Received: from localhost (10.201.23.25) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.439.0; Tue, 16 Apr 2019 16:58:35 +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 v2 2/8] dt-bindings: remoteproc: add bindings for stm32 remote processor driver Date: Tue, 16 Apr 2019 16:58:13 +0200 Message-ID: <1555426699-5340-3-git-send-email-fabien.dessenne@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1555426699-5340-1-git-send-email-fabien.dessenne@st.com> References: <1555426699-5340-1-git-send-email-fabien.dessenne@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.25] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-16_05:,, 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 | 64 ++++++++++++++++++++++ 1 file changed, 64 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..430132c --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt @@ -0,0 +1,64 @@ +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 remote processor dedicated memories. + The parent node should provide an appropriate ranges property + for properly translating these into bus addresses. +- 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 +- auto_boot: If defined, when remoteproc is probed, it loads the default + firmware and starts the remote processor. + +Example: + m4_rproc: m4@0 { + 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>; + };