From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Alan Tull Subject: [PATCH 0/2] of: dynamic: restrict overlay by targets Date: Mon, 4 Dec 2017 13:13:55 -0600 Message-Id: <20171204191357.3211-1-atull@kernel.org> To: Moritz Fischer , Rob Herring , Frank Rowand , Pantelis Antoniou Cc: Alan Tull , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org List-ID: Restrict which nodes are valid targets for a DT overlay. Add a flag bit to struct device_node allowing nodes to be marked as valid target for overlays. A driver that is always intended to handle DT overlays can enable overlays by calling a function for its DT node. For individual nodes that need to be opened up for a specific use, adding the property "overlay-allowed" enables overlays targeting that node. I'll need to document the DT property, not sure where specifically. New file bindings/overlay.txt? This patchset differs from the RFC: * Added a flag bit and got rid of the whitelist * Renamed the functions that enable a node * Added a DT property Alan Tull (2): of: overlay: add flag enabling overlays and enable fpga-region overlays of: dynamic: add overlay-allowed DT property drivers/fpga/of-fpga-region.c | 4 ++++ drivers/of/base.c | 4 ++-- drivers/of/dynamic.c | 3 +++ drivers/of/fdt.c | 3 +++ drivers/of/of_private.h | 2 ++ drivers/of/overlay.c | 26 ++++++++++++++++++++++++++ include/linux/of.h | 19 +++++++++++++++++++ 7 files changed, 59 insertions(+), 2 deletions(-) -- 2.7.4