# \[PATCH v4 0/4\] of: overlay: kobject \& sysfs'ation

- From: Pantelis Antoniou \<hidden\>
- Date: 2015-06-12 19:38:25 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2015/06/4515045
- Thread: https://ratatoskr.run/linux-devicetree/2015/06/4515045/t.md

```text
The first patch puts the overlays as objects in the sysfs in
/sys/firmware/devicetree/overlays.

The next adds a master overlay enable switch (that once is set to
disabled can't be re-enabled), while the one after that
introduces a number of default per overlay attributes.

The patchset is against linus's tree as of today.

The last patch updates the ABI docs for the sysfs entries.

Changes since v3:
* Used strtobool instead of kstrtoul
* ABI Documentation includes a pointer to the discussion that
requested the sysfs property.

Changes since v2:
* Removed the unittest patch.
* Split the sysfs attribute patch to a global and a per-overlay
  patch.
* Dropped binary attributes using textual kobj_attributes instead.

Changes since v1:
* Maintainer requested changes.
* Documented the sysfs entries
* Per overlay sysfs attributes.


Pantelis Antoniou (4):
  of: overlay: kobjectify overlay objects
  of: overlay: global sysfs enable attribute
  of: overlay: add per overlay sysfs attributes
  Documentation: ABI: /sys/firmware/devicetree/overlays

 .../ABI/testing/sysfs-firmware-devicetree-overlays |  35 +++++
 drivers/of/base.c                                  |   7 +
 drivers/of/of_private.h                            |   9 ++
 drivers/of/overlay.c                               | 146 ++++++++++++++++++++-
 4 files changed, 195 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-firmware-devicetree-overlays

-- 
1.7.12
```