From patchwork Tue Mar 22 11:36:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Yan X-Patchwork-Id: 8641251 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 8228E9F3D1 for ; Tue, 22 Mar 2016 11:37:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8C1CB201F5 for ; Tue, 22 Mar 2016 11:37:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24786200E9 for ; Tue, 22 Mar 2016 11:37:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758981AbcCVLh0 (ORCPT ); Tue, 22 Mar 2016 07:37:26 -0400 Received: from regular2.263xmail.com ([211.157.152.3]:33695 "EHLO regular2.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758964AbcCVLhX (ORCPT ); Tue, 22 Mar 2016 07:37:23 -0400 Received: from regular1.263xmail.com (unknown [192.168.165.234]) by regular2.263xmail.com (Postfix) with ESMTP id ABCE31E2F2 for ; Tue, 22 Mar 2016 19:37:16 +0800 (CST) Received: from andy.yan?rock-chips.com (unknown [192.168.167.12]) by regular1.263xmail.com (Postfix) with SMTP id D815C74B3; Tue, 22 Mar 2016 19:37:02 +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 5F2CD401; Tue, 22 Mar 2016 19:36:59 +0800 (CST) X-RL-SENDER: andy.yan@rock-chips.com X-FST-TO: robh+dt@kernel.org X-SENDER-IP: 121.15.173.1 X-LOGIN-NAME: andy.yan@rock-chips.com X-UNIQUE-TAG: <6d4f58b28e30da464f8b5bce8abf9e91> X-ATTACHMENT-NUM: 0 X-SENDER: yxj@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [121.15.173.1]) by smtp.263.net (Postfix) whith ESMTP id 19910M21K4C; Tue, 22 Mar 2016 19:37:01 +0800 (CST) From: Andy Yan To: robh+dt@kernel.org, sre@kernel.org, heiko@sntech.de, john.stultz@linaro.org, arnd@arndb.de Cc: galak@codeaurora.org, ijc+devicetree@hellion.org.uk, catalin.marinas@arm.com, olof@lixom.net, alexandre.belloni@free-electrons.com, dbaryshkov@gmail.com, jun.nie@linaro.org, pawel.moll@arm.com, will.deacon@arm.com, linux-rockchip@lists.infradead.org, matthias.bgg@gmail.com, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, f.fainelli@gmail.com, linux@arm.linux.org.uk, mbrugger@suse.com, linux-arm-kernel@lists.infradead.org, lorenzo.pieralisi@arm.com, moritz.fischer@ettus.com, linux-kernel@vger.kernel.org, wxt@rock-chips.com, dwmw2@infradead.org, mark.rutland@arm.com, Andy Yan Subject: [PATCH v6 1/4] dt-bindings: power: reset: add document for reboot-mode driver Date: Tue, 22 Mar 2016 19:36:32 +0800 Message-Id: <1458646592-540-1-git-send-email-andy.yan@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1458646525-491-1-git-send-email-andy.yan@rock-chips.com> References: <1458646525-491-1-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=-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 device tree bindings document for reboot-mode driver Signed-off-by: Andy Yan Acked-by: Rob Herring binding --- Changes in v6: - fix a typo with "property" - describe property "mask" more clear Changes in v5: - delete a unnecessary blank line in syscon-reboot-mode.txt - rename mode-fastoboot to mode-bootloader in syscon-reboot-mode.txt - rename macro BOOT_LOADER to BOOT_BL_DOWNLOAD, which gives a more clear mean Changes in v4: - remove mode-maskrom - rename mode-fastboot to mode-bootloader to keep compatible with the exiting Android device 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 | 24 +++++++++++++++ .../bindings/power/reset/syscon-reboot-mode.txt | 35 ++++++++++++++++++++++ 2 files changed, 59 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..3457949 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt @@ -0,0 +1,24 @@ +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-bootloader: Android fastboot mode, it's a mode to re-flash partitions on the Android based device. +- mode-loader: A bootloader mode, it's a mode used to download image on Rockchip platform, + usually used in development. + +Example: + reboot-mode { + mode-normal = ; + mode-recovery = ; + mode-bootloader = ; + mode-loader = ; + } 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..eb28469 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt @@ -0,0 +1,35 @@ +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 property: +- mask: bits mask of the bits in the register to store the reboot 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-bootloader = ; + mode-loader = ; + }; + };