| From: |
| Pantelis Antoniou <pantelis.antoniou@konsulko.com> |
| To: |
| Grant Likely <grant.likely@secretlab.ca> |
| Subject: |
| [PATCH v5 0/9] Introducing (yet again) Device Tree Overlays |
| Date: |
| Wed, 28 May 2014 15:46:24 +0300 |
| Message-ID: |
| <1401281193-27146-1-git-send-email-pantelis.antoniou@konsulko.com> |
| Cc: |
| Rob Herring <robherring2@gmail.com>, Stephen Warren <swarren@wwwdotorg.org>, Matt Porter <matt.porter@linaro.org>, Koen Kooi <koen@dominion.thruhere.net>, Alison Chaiken <Alison_Chaiken@mentor.com>, Dinh Nguyen <dinh.linux@gmail.com>, Jan Lubbe <jluebbe@lasnet.de>, Alexander Sverdlin <alexander.sverdlin@nsn.com>, Michael Stickel <ms@mycable.de>, Guenter Roeck <linux@roeck-us.net>, Dirk Behme <dirk.behme@gmail.com>, Alan Tull <delicious.quinoa@gmail.com>, Sascha Hauer <s.hauer@pengutronix.de>, Michael Bohan <mbohan@codeaurora.org>, Ionut Nicu <ioan.nicu.ext@nsn.com>, Michal Simek <monstr@monstr.eu>, Matt Ranostay <mranostay@gmail.com>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pete Popov <pete.popov@konsulko.com>, Dan Malek <dan.malek@konsulko.com>, Georgi Vlaev <georgi.vlaev@konsulko.com>, Pantelis Antoniou <pantelis.antoniou@konsulko.com>, Pantelis Antoniou <panto@antoniou-consulting.com> |
| Archive‑link: | |
Article |
The following patchset introduces Device Tree overlays, a method
of dynamically altering the kernel's live Device Tree, along with
a generic interface to use it in a board agnostic manner.
It is against linux-next as of today 28/5/2014
"134a9c91121b1081bcf737045a11b0510c5c9dfb - Add linux-next specific files for 20140528"
It relies on the following previously submitted patches/patchsets:
* OF: Add [__]of_find_node_by_full_name
* OF: Utility helper functions for dynamic nodes
To compile overlays you need the DTC compiler patch
* "dtc: Dynamic symbols & fixup support (v2)"
Changes since V4:
* New API of_overlay_create/destroy being able to support stacked
overlays correctly.
* Removed use of notifiers internally.
* Removed own-grown bus handler notifiers; using already in-place DT
notification infrastructure.
* Split SPI notifier patch to one patch of generic changes and one
for DT overlay notifier.
* Removed unused overlay depth feature.
* Updated documentation.
* Moved configfs based interface to using the new API.
* Added overlay removal stacking tests.
Changes since V3:
* Added overlay self-tests.
* Fix bug in of_init_overlay_info (wrong sizeof)
* Platform bus handler handles parent_pdev == NULL
* of_resolve fixes according to comments by robh
+ changed if (foo == NULL) to if (!foo)
+ changed if (foo != NULL) to if (foo)
+ drivers/of/Kconfig added dep on OF && !SPARC
+ convert to using be32_to_cpup
+ u32 -> __be32 when modifying property values
+ cosmetic fixes
Changes since V2:
* Use of a configfs board agnostic overlay method
* Use of per bus handlers instead of hardcoded behaviour
* Optional target-path overlay target, which allows one to use standard
DTBs without resolution options.
Changes since V1:
* Removal of any bits related to a specific board (beaglebone).
* Introduced a platform agnostic interface using /proc/device-tree-overlay
* Various bug fixes related to i2c device handling have been squashed in.
Pantelis Antoniou (9):
OF: Introduce Device Tree resolve support.
OF: Introduce DT overlay support.
OF: DT-Overlay configfs interface
OF: platform: Add OF notifier handler
of: i2c: Export single device registration method
OF: i2c: Add OF notifier handler
of: spi: Export single device registration method and accessors
OF: spi: Add OF notifier handler
OF: selftest: Add overlay self-test support.
Documentation/devicetree/bindings/selftest.txt | 14 +
.../devicetree/dynamic-resolution-notes.txt | 25 +
Documentation/devicetree/overlay-notes.txt | 160 ++++
drivers/base/platform.c | 69 +-
drivers/i2c/i2c-core.c | 165 +++-
drivers/of/Kconfig | 20 +
drivers/of/Makefile | 3 +
drivers/of/configfs.c | 251 +++++
drivers/of/overlay.c | 1001 ++++++++++++++++++++
drivers/of/resolver.c | 378 ++++++++
drivers/of/selftest.c | 481 ++++++++++
drivers/of/testcase-data/testcases.dtsi | 1 +
drivers/of/testcase-data/tests-overlay.dtsi | 180 ++++
drivers/spi/spi.c | 323 +++++--
include/linux/i2c.h | 10 +
include/linux/of.h | 167 ++++
16 files changed, 3094 insertions(+), 154 deletions(-)
create mode 100644 Documentation/devicetree/bindings/selftest.txt
create mode 100644 Documentation/devicetree/dynamic-resolution-notes.txt
create mode 100644 Documentation/devicetree/overlay-notes.txt
create mode 100644 drivers/of/configfs.c
create mode 100644 drivers/of/overlay.c
create mode 100644 drivers/of/resolver.c
create mode 100644 drivers/of/testcase-data/tests-overlay.dtsi
--
1.7.12
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