From patchwork Wed Apr 1 19:37:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Gerlach X-Patchwork-Id: 6141841 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 836709F2EC for ; Wed, 1 Apr 2015 19:38:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4DA572035B for ; Wed, 1 Apr 2015 19:38:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5509D20220 for ; Wed, 1 Apr 2015 19:38:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753720AbbDATiW (ORCPT ); Wed, 1 Apr 2015 15:38:22 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:57744 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753479AbbDAThw (ORCPT ); Wed, 1 Apr 2015 15:37:52 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id t31JbSu1013139; Wed, 1 Apr 2015 14:37:28 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t31JbRwF007335; Wed, 1 Apr 2015 14:37:27 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Wed, 1 Apr 2015 14:37:27 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id t31JbRmj008528; Wed, 1 Apr 2015 14:37:27 -0500 Received: from localhost (dave-ubuntu.am.dhcp.ti.com [128.247.9.208]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id t31JbQ923632; Wed, 1 Apr 2015 14:37:26 -0500 (CDT) From: Dave Gerlach To: , , , CC: Ohad Ben-Cohen , Suman Anna , Kevin Hilman , Tony Lindgren , Dave Gerlach Subject: [PATCH v3 3/4] Documentation: dt: add bindings for TI Wakeup M3 processor Date: Wed, 1 Apr 2015 14:37:18 -0500 Message-ID: <1427917039-43206-4-git-send-email-d-gerlach@ti.com> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1427917039-43206-1-git-send-email-d-gerlach@ti.com> References: <1427917039-43206-1-git-send-email-d-gerlach@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add the device tree bindings document for the TI Wakeup M3 remote processor devices on AM33xx and AM43xx SoCs. These devices are used to offload low-level power management functionality, and are handled by the wkup_m3 remoteproc driver. Signed-off-by: Suman Anna Signed-off-by: Dave Gerlach Acked-by: Tony Lindgren --- .../bindings/remoteproc/wkup_m3_rproc.txt | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt diff --git a/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt new file mode 100644 index 0000000..3a70073 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt @@ -0,0 +1,52 @@ +TI Wakeup M3 Remoteproc Driver +============================== + +The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor +(commonly referred to as Wakeup M3 or CM3) to help with various low power tasks +that cannot be controlled from the MPU. This CM3 processor requires a firmware +binary to accomplish this. The wkup_m3 remoteproc driver handles the loading of +the firmware and booting of the CM3. + +Wkup M3 Device Node: +==================== +A wkup_m3 device node is used to represent the Wakeup M3 processor instance +within the SoC. It is added as a child node of the parent interconnect bus +(l4_wkup) through which it is accessible to the MPU. + +Required properties: +-------------------- +- compatible: Should be one of, + "ti,am3352-wkup-m3" for AM33xx SoCs + "ti,am4372-wkup-m3" for AM43xx SoCs +- reg: Should contain the address ranges for the two internal + memory regions, UMEM and DMEM. The parent node should + provide an appropriate ranges property for properly + translating these into bus addresses. +- reg-names: Contains the corresponding names for the two memory + regions. These should be named "umem" & "dmem". +- ti,hwmods: Name of the hwmod associated with the wkupm3 device. +- ti,pm-firmware: Name of firmware file to be used for loading and + booting the wkup_m3 remote processor. + +Example: +-------- +/* AM33xx */ +ocp { + l4_wkup: l4_wkup@44c00000 { + compatible = "am335-l4-wkup", "simple-bus"; + ranges = <0 0x44c00000 0x400000>; + #address-cells = <1>; + #size-cells = <1>; + + wkup_m3: wkup_m3@100000 { + compatible = "ti,am3352-wkup-m3"; + reg = <0x100000 0x4000>, + <0x180000 0x2000>; + reg-names = "umem", "dmem"; + ti,hwmods = "wkup_m3"; + ti,pm-firmware = "am335x-pm-firmware.elf"; + }; + }; + + ... +};