From patchwork Tue Mar 5 14:24:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabien DESSENNE X-Patchwork-Id: 10839541 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 0E1371575 for ; Tue, 5 Mar 2019 14:25:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EE1B52B03D for ; Tue, 5 Mar 2019 14:25:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E19662B286; Tue, 5 Mar 2019 14:25:37 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 765242B03D for ; Tue, 5 Mar 2019 14:25:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3+Qd+VZJWXIBSZTpY3k+/pe7bplpH5HT9pp2IcYAJaU=; b=oRt1ek0otbbyYP bb9Q6Uo8WR5j9bPWY1X+cifGh7Gbv0CT3j/B1XOyIEAdsDLXFDIyXCj2fNmZST5ubZQDzVCKD8SVK BLYpZZQoiuyByDwiei8sufcGRw/rvnyeFkZWfgTCOD7UgmBd14BpBq7ICTa0uWf06P6YqVi8vqbDX 4xM/eHKaRWDYoSUOcYPs5BeCypKnJ+ZhDTg1loOQmt8p0+9TcUNFMgVrcL3sj1aK/PzJCiJU5fVqN BeNqJeDQsWYSDTxtzZbE000eEeOWjGcEcg3s2I1EGzxRI1D43gci3W1P5Hdn28d/JXOisQ42WnFYK 6736be7MU6VS5w7ity1g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1B0d-0000V2-Sc; Tue, 05 Mar 2019 14:25:31 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1Azn-0006gQ-PW for linux-arm-kernel@lists.infradead.org; Tue, 05 Mar 2019 14:24:41 +0000 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 x25EHw2r028713; Tue, 5 Mar 2019 15:24:29 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2qyhgasy0j-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 05 Mar 2019 15:24:29 +0100 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 A62F438; Tue, 5 Mar 2019 14:24:28 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 793672CF8; Tue, 5 Mar 2019 14:24:28 +0000 (GMT) Received: from SAFEX1HUBCAS24.st.com (10.75.90.95) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 5 Mar 2019 15:24:28 +0100 Received: from localhost (10.201.23.25) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 5 Mar 2019 15:24:27 +0100 From: Fabien Dessenne To: Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Ohad Ben-Cohen , Bjorn Andersson , , , , , Subject: [PATCH 2/8] dt-bindings: remoteproc: add bindings for stm32 remote processor driver Date: Tue, 5 Mar 2019 15:24:03 +0100 Message-ID: <1551795849-13672-3-git-send-email-fabien.dessenne@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551795849-13672-1-git-send-email-fabien.dessenne@st.com> References: <1551795849-13672-1-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=2019-03-05_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190305_062440_105772_AB17AD7D X-CRM114-Status: GOOD ( 16.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ludovic Barre , Arnaud Pouliquen , Loic Pallardy , Fabien Dessenne , Benjamin Gaignard Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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 | 67 ++++++++++++++++++++++ 1 file changed, 67 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..cc90c88 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/stm32-rproc.txt @@ -0,0 +1,67 @@ +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-rproc" +- 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. +- reset-names: Must be "mcu_rst" +- 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: +- interrupt-parent: phandle to the interrupt controller node. +- interrupts: Should contain the watchdog interrupt +- interrupt-names: Must be "wdg" +- mboxes: 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. + Mono-directional 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 + (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 looks for a default + firmware and if it finds some, it loads the firmware and starts + the remote processor. +- recovery: If defined, remoteproc enables the crash recovery process. + +Example: + m4_rproc: m4@0 { + compatible = "st,stm32mp1-rproc"; + reg = <0x00000000 0x10000>, + <0x10000000 0x40000>, + <0x30000000 0x40000>; + resets = <&rcc MCU_R>; + reset-names = "mcu_rst"; + st,syscfg-holdboot = <&rcc 0x10C 0x1>; + st,syscfg-tz = <&rcc 0x000 0x1>; + };