From patchwork Tue Jan 30 05:51:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Stanley X-Patchwork-Id: 867402 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="a+5LFEJh"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zVwWF2H5Gz9s83 for ; Tue, 30 Jan 2018 16:52:09 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752812AbeA3Fvl (ORCPT ); Tue, 30 Jan 2018 00:51:41 -0500 Received: from mail-pf0-f195.google.com ([209.85.192.195]:39152 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752293AbeA3Fvj (ORCPT ); Tue, 30 Jan 2018 00:51:39 -0500 Received: by mail-pf0-f195.google.com with SMTP id e11so7808222pff.6; Mon, 29 Jan 2018 21:51:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=R2fi9dEw2GrkHAYwMSiZ7445jXCPYwkaXsj7fqtAgbI=; b=a+5LFEJhQn/HQxPxwTqpWsIyPcT1WywNISKWyfipN0lHj864EJa3ONm+m7MmW9VMKo ENCe5G7UvKySqb0MW3gAFdIs+eNGDjB4J7PNDjSr9yTcKMT95R7pht3RT14TzdbMZEtb DcvfFeTPEQ02O4DuBX1XWfONxZ1Cc860SYvOIoRUyUl7Z7qwJxhfQJKzHvVk2JUnAsj/ lyqaYhATJywXjxGgbaPrDrAHxFo9Tv6TGnSF3RvT7siSw8Gz+yKFOCpocSvdbb9/EM55 +O5cU96j9hfyIVI/nXAFtmlzUqbH9kcFZ+YFGm2bL5UkA4nIJpu/MIQ5XDxG0d3Ru9HQ 0vng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=R2fi9dEw2GrkHAYwMSiZ7445jXCPYwkaXsj7fqtAgbI=; b=tK0RhmOdOaNqUR7V4OphYhPOTy3IposswrVhvdx0I5/MJGHSCYHId6JVzGAO5NTjZ5 AsARpl1GWUwldUUE4gFW2Yt5AOa61QZ8mZ8QnGt0KZrWwXLvbgR0kMhEtA6nk/CpWqM+ bOMf7i7GOEIAoEVxUd2oe7eZSndVS9f+o/lcP37v+NUFmEq+NBrrX/gEK74iF9R92XJm pdXQXpWVqgneheREoM9Yhjgreh4LGel01593lbbK6pw10djmvy7Ai+vmdxT7LEjq9w1X zcCsB9MmIJBAHYmCPyyKdx/jF/9SNGTti8gg3aiaI9HKFwW9WHhon1JsFG9VTwOVgKAz UVvw== X-Gm-Message-State: AKwxytc5lwCr9t1B10s/SEOgbbdEXiB9QIcy3tbgscU8kfUoJHNv8gmA iCeGUKc1RyA4NrNQJ0ER5bE= X-Google-Smtp-Source: AH8x2277LB9tAqX8SF5QFvaX5vK0mGtw5y8C9eMqjUouDc4DW6q3qXjHclyZf4jz6mH/ShbQNMmt6A== X-Received: by 10.99.63.11 with SMTP id m11mr17829211pga.422.1517291498643; Mon, 29 Jan 2018 21:51:38 -0800 (PST) Received: from aurora.jms.id.au ([203.0.153.9]) by smtp.gmail.com with ESMTPSA id a15sm34789738pfl.98.2018.01.29.21.51.34 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 29 Jan 2018 21:51:37 -0800 (PST) Received: by aurora.jms.id.au (sSMTP sendmail emulation); Tue, 30 Jan 2018 16:21:31 +1030 From: Joel Stanley To: Rob Herring , Mark Rutland , devicetree@vger.kernel.org Cc: Christopher Bostic , Jeremy Kerr , Eddie James , linux-kernel@vger.kernel.org Subject: [PATCH 1/2] dt-bindings: fsi: Add optional property no-scan-on-init Date: Tue, 30 Jan 2018 16:21:15 +1030 Message-Id: <20180130055116.17411-2-joel@jms.id.au> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180130055116.17411-1-joel@jms.id.au> References: <20180130055116.17411-1-joel@jms.id.au> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Christopher Bostic Add an optional FSI master property 'no-scan-on-init. This can be specified to indicate that a master should not be automatically scanned at init time. This is required in cases where a scan could interfere with another FSI master on the same bus. Signed-off-by: Christopher Bostic Acked-by: Jeremy Kerr Signed-off-by: Joel Stanley Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/fsi/fsi.txt b/Documentation/devicetree/bindings/fsi/fsi.txt index 4eaf488d4015..ab516c673a4b 100644 --- a/Documentation/devicetree/bindings/fsi/fsi.txt +++ b/Documentation/devicetree/bindings/fsi/fsi.txt @@ -56,6 +56,13 @@ addresses (link index and slave ID), and no size: #address-cells = <2>; #size-cells = <0>; +An optional boolean property can be added to indicate that a particular master +should not scan for connected devices at initialization time. This is +necessary in cases where a scan could cause arbitration issues with other +masters that may be present on the bus. + + no-scan-on-init; + FSI slaves ----------