From patchwork Tue Feb 2 09:59:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Yan X-Patchwork-Id: 8187621 Return-Path: X-Original-To: patchwork-linux-pm@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 E41C29F1C1 for ; Tue, 2 Feb 2016 10:01:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DFC9520320 for ; Tue, 2 Feb 2016 10:01:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C5AEC202EB for ; Tue, 2 Feb 2016 10:01:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754326AbcBBKBT (ORCPT ); Tue, 2 Feb 2016 05:01:19 -0500 Received: from regular1.263xmail.com ([211.150.99.135]:54174 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754377AbcBBKBQ (ORCPT ); Tue, 2 Feb 2016 05:01:16 -0500 Received: from andy.yan?rock-chips.com (unknown [192.168.167.158]) by regular1.263xmail.com (Postfix) with SMTP id C40A51B2A4; Tue, 2 Feb 2016 18:01:09 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 0DCCB2AEF0; Tue, 2 Feb 2016 18:01:03 +0800 (CST) X-RL-SENDER: andy.yan@rock-chips.com X-FST-TO: robh+dt@kernel.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: andy.yan@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: yxj@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 9232GYBYHQ; Tue, 02 Feb 2016 18:01:07 +0800 (CST) From: Andy Yan To: robh+dt@kernel.org, arnd@arndb.de, john.stultz@linaro.org Cc: moritz.fischer@ettus.com, matthias.bgg@gmail.com, galak@codeaurora.org, ijc+devicetree@hellion.org.uk, catalin.marinas@arm.com, heiko@sntech.de, sre@kernel.org, dbaryshkov@gmail.com, alexandre.belloni@free-electrons.com, jun.nie@linaro.org, pawel.moll@arm.com, will.deacon@arm.com, linux-rockchip@lists.infradead.org, wxt@rock-chips.com, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux@arm.linux.org.uk, mbrugger@suse.com, linux-arm-kernel@lists.infradead.org, lorenzo.pieralisi@arm.com, linux-kernel@vger.kernel.org, richard@nod.at, dwmw2@infradead.org, mark.rutland@arm.com, Andy Yan Subject: [PATCH v3 1/4] dt-bindings: power: reset: add document for reboot-mode driver Date: Tue, 2 Feb 2016 17:59:11 +0800 Message-Id: <1454407151-4751-1-git-send-email-andy.yan@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454406981-4692-1-git-send-email-andy.yan@rock-chips.com> References: <1454406981-4692-1-git-send-email-andy.yan@rock-chips.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 device tree bindings document for reboot-mode driver Signed-off-by: Andy Yan --- Changes in v3: - descirbe all reboot mode as properity instead of subnode Changes in v2: None Changes in v1: None .../bindings/power/reset/reboot-mode.txt | 26 ++++++++++++++++ .../bindings/power/reset/syscon-reboot-mode.txt | 36 ++++++++++++++++++++++ 2 files changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/reboot-mode.txt create mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt diff --git a/Documentation/devicetree/bindings/power/reset/reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt new file mode 100644 index 0000000..517080f --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt @@ -0,0 +1,26 @@ +Generic reboot mode core map driver + +This driver get reboot mode arguments and call the write +interface to stores the magic value in special register +or ram . Then the bootloader can read it and take different +action according the argument stored. + +All mode properties are vendor specific, it is a indication to tell +the bootloder what to do when the system reboot, and should be named +as mode-xxx = (xxx is mode name). + +- mode-normal: Normal reboot mode, system reboot with command "reboot". +- mode-recovery: Android Recovery mode, it is a mode to format the device or update a new image. +- mode-fastboot: Android fastboot mode, it's a mode to re-flash partitions on the device. +- mode-loader: A bootloader mode, it's a mode used to download image on Rockchip platform, + usually used in development. +- mode-maskrom: It's a mode to download bootloader on Rockchip platform. + +Example: + reboot-mode { + mode-normal = ; + mode-recovery = ; + mode-fastboot = ; + mode-loader = ; + mode-maskrom = ; + } diff --git a/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt new file mode 100644 index 0000000..923c82b --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt @@ -0,0 +1,36 @@ +SYSCON reboot mode driver + +This driver get reboot mode magic value form reboot-mode driver +and stores it in a SYSCON mapped register. Then the bootloader +can read it and take different action according to the magic +value stored. + +This DT node should be represented as a sub-node of a "syscon", "simple-mfd" +node. + +Required properties: +- compatible: should be "syscon-reboot-mode" +- offset: offset in the register map for the storage register (in bytes) + +Optional properity: +- mask: the mask bits of the mode magic value, default set to 0xffffffff if missing. + +The rest of the properties should follow the generic reboot-mode discription +found in reboot-mode.txt + +Example: + pmu: pmu@20004000 { + compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd"; + reg = <0x20004000 0x100>; + + reboot-mode { + compatible = "syscon-reboot-mode"; + offset = <0x40>; + mode-normal = ; + mode-recovery = ; + mode-fastboot = ; + mode-loader = ; + mode-maskrom = ; + + }; + };