From patchwork Mon Aug 26 10:46:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Mikhaylov X-Patchwork-Id: 1153092 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 46H83J0cP2z9sBF for ; Mon, 26 Aug 2019 20:52:28 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="tV1cLjpX"; dkim-atps=neutral Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46H83H2lsvzDqQJ for ; Mon, 26 Aug 2019 20:52:27 +1000 (AEST) X-Original-To: openbmc@lists.ozlabs.org Delivered-To: openbmc@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=yadro.com (client-ip=89.207.88.252; helo=mta-01.yadro.com; envelope-from=i.mikhaylov@yadro.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="tV1cLjpX"; dkim-atps=neutral Received: from mta-01.yadro.com (mta-02.yadro.com [89.207.88.252]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46H7xG3W5QzDqW3; Mon, 26 Aug 2019 20:47:14 +1000 (AEST) Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 633BB42EE5; Mon, 26 Aug 2019 10:47:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1566816430; x=1568630831; bh=sDEjAIt5xHIASzEmtC/Trtueg2g59LDArRf QVSN+7T4=; b=tV1cLjpXjz8aSWpEAlBwXBqbEGUYEz64wHjdQ8NMfZBsIVR9O58 3bibA7Kw+Qle+KB9G+5OEy+F9J9BWaPjBmwnbdaZLK/dkfSHxNYNWNG4Fh7dQ9XY eQ5Gv7+CqXhXPG4OKlD4ZL19gDa24cUVA30hGvh7Vb7yES+t7bpuvqCw= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gltpLMrPWcoY; Mon, 26 Aug 2019 13:47:10 +0300 (MSK) Received: from T-EXCH-02.corp.yadro.com (t-exch-02.corp.yadro.com [172.17.10.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id 64A0E42EEA; Mon, 26 Aug 2019 13:47:10 +0300 (MSK) Received: from localhost.dev.yadro.com (172.17.15.69) by T-EXCH-02.corp.yadro.com (172.17.10.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Mon, 26 Aug 2019 13:47:09 +0300 From: Ivan Mikhaylov To: Guenter Roeck , Wim Van Sebroeck Subject: [PATCH v2 4/4] dt-bindings/watchdog: Add access_cs0 option for alt-boot Date: Mon, 26 Aug 2019 13:46:36 +0300 Message-ID: <20190826104636.19324-5-i.mikhaylov@yadro.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190826104636.19324-1-i.mikhaylov@yadro.com> References: <20190826104636.19324-1-i.mikhaylov@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.15.69] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-aspeed@lists.ozlabs.org, Andrew Jeffery , openbmc@lists.ozlabs.org, Alexander Amelkin , linux-kernel@vger.kernel.org, Rob Herring , Ivan Mikhaylov , linux-arm-kernel@lists.infradead.org Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" The option for the ast2400/2500 to get access to CS0 at runtime. Signed-off-by: Ivan Mikhaylov --- Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt index c5077a1f5cb3..023a9b578df6 100644 --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt @@ -34,6 +34,13 @@ Optional properties: engine is responsible for this. - aspeed,alt-boot: If property is present then boot from alternate block. + At alternate side 'access_cs0' sysfs file provides: + ast2400: a way to get access to the primary SPI flash + chip at CS0 after booting from the alternate + chip at CS1. + ast2500: a way to restore the normal address mapping from + (CS0->CS1, CS1->CS0) to (CS0->CS0, CS1->CS1). + - aspeed,external-signal: If property is present then signal is sent to external reset counter (only WDT1 and WDT2). If not specified no external signal is sent.