From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754673AbdAaAEG (ORCPT ); Mon, 30 Jan 2017 19:04:06 -0500 Received: from mail-pf0-f173.google.com ([209.85.192.173]:33023 "EHLO mail-pf0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753582AbdAaAEB (ORCPT ); Mon, 30 Jan 2017 19:04:01 -0500 From: Stephen Boyd To: David Gibson Cc: devicetree-compiler@vger.kernel.org, Frank Rowand , Pantelis Antoniou , Rob Herring , Mark Brown , Grant Likely , Mark Rutland , mporter@konsulko.com, Koen Kooi , Guenter Roeck , marex@denx.de, Wolfram Sang , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org Subject: [RFC/PATCH 0/4] New style overlay and /expansion/ support Date: Mon, 30 Jan 2017 16:02:55 -0800 Message-Id: <20170131000259.28576-1-stephen.boyd@linaro.org> X-Mailer: git-send-email 2.10.0.297.gf6727b0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series revives the new style of overlay syntax that never got merged. David said he wanted to handle it outside of the parse phase[1], and he proposed a patch to move overlay application to the livetree phase. I've applied that patch and reworked Pantelis' last two patches for the new style "syntactic sugar" on top[2]. In addition, I've included the new /expansion/ keyword support for overlays that don't reference any labels that are outside of the input file. The new expansion keyword just transforms the unresolved references into strings that go into a new 'target-alias' property instead of the 'target' property. This is in line with what David has proposed on the mailing list a few months ago[3]. RFC part: The current syntax requires a root node or overlays are rejected. Making the root node optional would require some non-trivial rework of the grammar to support it. This means the proposed 'new style' syntax doesn't work without the root node. [1] https://lkml.kernel.org/r/20161125041124.GB12287@umbus.fritz.box [2] https://lkml.kernel.org/r/1481114903-8197-7-git-send-email-pantelis.antoniou@konsulko.com [3] https://lkml.kernel.org/r/20160718142037.GS16769@voom.fritz.box David Gibson (1): Start moving overlay handling from parser into dtc core Pantelis Antoniou (1): tests: Add a test for overlays syntactic sugar Stephen Boyd (2): dtc: Add syntactic sugar version of overlays dtc: Add /expansion/ support checks.c | 2 +- dtc-lexer.l | 6 +++ dtc-parser.y | 68 +++++++++++++++++----------------- dtc.c | 16 +++++++- dtc.h | 20 +++++++++- flattree.c | 2 +- fstree.c | 2 +- livetree.c | 80 +++++++++++++++++++++++++++++++++++++++- tests/overlay_overlay_simple.dts | 3 ++ tests/run_tests.sh | 6 +++ 10 files changed, 163 insertions(+), 42 deletions(-) -- 2.10.0.297.gf6727b0