From patchwork Wed Jan 27 00:37:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: John Stultz X-Patchwork-Id: 573781 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 694F3140BD3 for ; Wed, 27 Jan 2016 11:38:35 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b=SMpqSqcp; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752115AbcA0AiI (ORCPT ); Tue, 26 Jan 2016 19:38:08 -0500 Received: from mail-pf0-f182.google.com ([209.85.192.182]:34094 "EHLO mail-pf0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751965AbcA0AiG (ORCPT ); Tue, 26 Jan 2016 19:38:06 -0500 Received: by mail-pf0-f182.google.com with SMTP id q63so110322357pfb.1 for ; Tue, 26 Jan 2016 16:38:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type:content-transfer-encoding; bh=SZNpH8C+mhOM3d+q0fwbSOsnOrhJFTIVbUq8hp3M24E=; b=SMpqSqcpNu1MRaX67+uom2xKuCWtPF1RFz7GwQ9LJj6A8LPQZZUNYB80cKrJZEvaJ8 5IJ9WvergEwim9SSHdPPH3Zb7lmGmUrw2IaB08XDEE4Jesfl01/sOx6VkjjH6O2s/7D7 OEWwkNDUcCN6m5drkyazQurPFBI66QiMU9Yak= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-type:content-transfer-encoding; bh=SZNpH8C+mhOM3d+q0fwbSOsnOrhJFTIVbUq8hp3M24E=; b=iLLD3TwFbKFiiHlUA1I8c8c7dd3D+RhVYt6WDV2kOdN6gbDmaGbWEN5Gvur1HpokPv OLdzbICyhDXe+pow95GiFIKbxEheGYG4i75a7nXYlT5JksinPfJxI/vgUaJYxhC5wNta jjv3CXEz8EM5/EtIcUca1il79EPEw25yf9aMPbeBehd0ObP9afcY6N9ZJ5HDaOrEBeEP bxAKDb6ASsDrCe/r2FaceebCMw6wZ7rJ6Gs9bmK0N4KDq+UV0BE8uiE/SC6HJw9PUVzT ZumQrThggpzcNKae+nbEfkmdCp5JIhNkMFaLMlo2WeB6eVyT9a/YgxoS0kuWLK4njuor K7vw== X-Gm-Message-State: AG10YOSnZRezUmVKWfkYqmAoapyiiRPIz3G2fdzGW2P+zAL6oijBOKOP/H530ojAUYK2Aa08 X-Received: by 10.98.71.211 with SMTP id p80mr37850134pfi.135.1453855085330; Tue, 26 Jan 2016 16:38:05 -0800 (PST) Received: from localhost.localdomain (c-76-115-103-22.hsd1.or.comcast.net. [76.115.103.22]) by smtp.gmail.com with ESMTPSA id c86sm4321091pfd.75.2016.01.26.16.38.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 26 Jan 2016 16:38:04 -0800 (PST) From: John Stultz To: lkml Cc: John Stultz , Andy Yan , Rob Herring , Arnd Bergmann , Thierry Reding , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Caesar Wang , Kees Cook , Guodong Xu , Haojian Zhuang , Vishal Bhoj , Bjorn Andersson , devicetree@vger.kernel.org, Android Kernel Team Subject: [RFC][PATCH 1/3] dt-bindings: power: reset: Add document for sram-reboot-mode driver Date: Tue, 26 Jan 2016 16:37:58 -0800 Message-Id: <1453855080-17760-2-git-send-email-john.stultz@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1453855080-17760-1-git-send-email-john.stultz@linaro.org> References: <1453855080-17760-1-git-send-email-john.stultz@linaro.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add device tree binding document for reboot-mode driver Cc: Andy Yan Cc: Rob Herring Cc: Arnd Bergmann Cc: Thierry Reding Cc: Heiko Stübner Cc: Caesar Wang Cc: Kees Cook Cc: Guodong Xu Cc: Haojian Zhuang Cc: Vishal Bhoj Cc: Bjorn Andersson Cc: devicetree@vger.kernel.org Cc: Android Kernel Team Signed-off-by: John Stultz --- .../bindings/power/reset/sram-reboot-mode.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt diff --git a/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt new file mode 100644 index 0000000..33bb132 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt @@ -0,0 +1,47 @@ +SRAM reboot mode driver + +This driver get reboot mode magic value form reboot-mode driver +and stores it in a SRAM address. 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 "mmio-sram", "simple-bus" +node. + +Required properties: +- compatible: should be "sram-reboot-mode" +- reg: offset from the sram range where to store the magic value(in bytes) + +The rest of the properties should follow the generic reboot-mode discription +found in reboot-mode.txt + +Example: + + sram@5f01000 { + compatible = "mmio-sram", "simple-bus"; + reg = <0x0 0x05f01000 0x0 0x00001000>; + ranges = <0x0 0x0 0x05f01000 0x00001000>; + + #address-cells = <1>; + #size-cells = <1>; + + reboot-mode@0 { + compatible = "sram-reboot-mode"; + reg = <0x0 0x4>; + + none { + linux,mode = "none"; + loader,magic = <0x77665501>; + }; + + bootloader { + linux,mode = "bootloader"; + loader,magic = <0x77665500>; + }; + + recovery { + linux,mode = "recovery"; + loader,magic = <0x77665502>; + }; + }; + };