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Date: Thu, 29 May 2014 14:56:29 +0100 From: Grant Likely <grant.likely@...retlab.ca> To: Pantelis Antoniou <pantelis.antoniou@...sulko.com> Cc: Rob Herring <robherring2@...il.com>, Stephen Warren <swarren@...dotorg.org>, Matt Porter <matt.porter@...aro.org>, Koen Kooi <koen@...inion.thruhere.net>, Alison Chaiken <Alison_Chaiken@...tor.com>, Dinh Nguyen <dinh.linux@...il.com>, Jan Lubbe <jluebbe@...net.de>, Alexander Sverdlin <alexander.sverdlin@....com>, Michael Stickel <ms@...able.de>, Guenter Roeck <linux@...ck-us.net>, Dirk Behme <dirk.behme@...il.com>, Alan Tull <delicious.quinoa@...il.com>, Sascha Hauer <s.hauer@...gutronix.de>, Michael Bohan <mbohan@...eaurora.org>, Ionut Nicu <ioan.nicu.ext@....com>, Michal Simek <monstr@...str.eu>, Matt Ranostay <mranostay@...il.com>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Pete Popov <pete.popov@...sulko.com>, Dan Malek <dan.malek@...sulko.com>, Georgi Vlaev <georgi.vlaev@...sulko.com>, Pantelis Antoniou <pantelis.antoniou@...sulko.com>, Pantelis Antoniou <panto@...oniou-consulting.com> Subject: Re: [PATCH v5 0/9] Introducing (yet again) Device Tree Overlays On Wed, 28 May 2014 15:46:24 +0300, Pantelis Antoniou <pantelis.antoniou@...sulko.com> wrote: > 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 In the next version, can you include the patches you depend on that aren't already in my tree? > 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. Good changes. This version is considerably better than the past one. I've still got comments, but I'm a lot more comfortable with the approach. > 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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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