From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 57906C0218F for ; Fri, 31 Jan 2025 16:49:44 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Yl21L6lB5z30NN; Sat, 1 Feb 2025 03:49:42 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=63.228.1.57 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1738342182; cv=none; b=Yt+UbHaUvVE+foCZkBxQcFVjIU3hBuJe+OQaTTzKUVPjAYvsFUI5bZkeOqFNBCL+7iFckiiEH0E2GYDgw0pNvjiALg70gjow8gUor565nNSEBJg6AwUWIjxV66PKapcH+842WTJ7n39njlgX8pxzS1O1CDCLs+tYIjHptVIak8p0fvf4xgqqseclYcYIVm2VHLCghXsrUF6+0LE9SoFJqd4aVIFJkba41RdlFu+u2QcjmPvjMQTmcSSVFmoI+C5FfA0f0yN24SEkuToYQ8PXVXlk++7HotRk95H7d096JtH5Cb4jME7ki/xb13E5b69AW8UtzSk36Vq4W9NpvYscSQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1738342182; c=relaxed/relaxed; bh=1vEaJ3isschshjH7y0pDnVJ2wmfDpiacGS4nLjkY4aM=; h=Date:From:To:Cc:Subject:Message-ID:References:Mime-Version: Content-Type:Content-Disposition:In-Reply-To; b=Jk3tHsix7HB/Mw34VDPMxWDQxxtkT3QJUorhtipHTI2JxN9gmahUSDCQzXfrI45aXf/Y3G217+b9mxAosCYV7bi1oQbrTh4oAy1OK+4ROfVYNyj5sR22R9840Gcs9zg+J5Tk7lC9J63U+r2+W0QtI3kIgz/rz8BQzR7txF/uNTyTtqTN/tyPmRjbR1J+dZlYnZanOfuBEVZZLAueM/E5/CwBxVU0l9X6wQH3ucewA2g8MeIUbERML0DopZZuMFKSJv5S70TrJC8maJMHjKbQzR0BpjfSFXn4/WefIotmcIC/qf3I/VC2y3ezl4OfI3il6JPvTUXFvgX2XyH2kfK8HQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org; spf=pass (client-ip=63.228.1.57; helo=gate.crashing.org; envelope-from=segher@kernel.crashing.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.crashing.org Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.crashing.org (client-ip=63.228.1.57; helo=gate.crashing.org; envelope-from=segher@kernel.crashing.org; receiver=lists.ozlabs.org) Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by lists.ozlabs.org (Postfix) with ESMTP id 4Yl21L0srtz2yMh for ; Sat, 1 Feb 2025 03:49:41 +1100 (AEDT) Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 50VGmeuM028158; Fri, 31 Jan 2025 10:48:40 -0600 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 50VGmd9l028155; Fri, 31 Jan 2025 10:48:39 -0600 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Fri, 31 Jan 2025 10:48:39 -0600 From: Segher Boessenkool To: Paul Mackerras Cc: linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 2/5] powerpc/microwatt: Device-tree updates Message-ID: <20250131164839.GB20626@gate.crashing.org> References: X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i On Wed, Jan 29, 2025 at 09:52:09AM +1100, Paul Mackerras wrote: > - isa = <3000>; > + isa = <3010>; Does this mean 3.1, or 3.01? If the former, can this also encode 3.1C? Should uwatt say to support that? > little-endian { > - isa = <2050>; > - usable-privilege = <3>; > + isa = <0>; > + usable-privilege = <7>; > + os-support = <0>; > hwcap-bit-nr = <1>; > }; What does "isa" in this node mean? Why is it changed to 0? (I don't know this node at all, I only know a property with the same name). > cache-inhibited-large-page { > - isa = <2040>; > - usable-privilege = <2>; > + isa = <0>; > + usable-privilege = <6>; > + os-support = <0>; > }; Similar question here. > - isa = <2010>; > + isa = <0x00>; > usable-privilege = <2>; > + os-support = <0>; > }; And here. That's a quite woolly way to say "0" btw ;-) Segher