[PATCH v3 0/4] Add post-init-providers binding to improve suspend/resume stability

From: Saravana Kannan <saravanak@google.com>
To: Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	 Ard Biesheuvel <ardb@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	 Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Daniel Scally <djrscally@gmail.com>,
	 Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	 Sakari Ailus <sakari.ailus@linux.intel.com>,
	Len Brown <lenb@kernel.org>,
	 Saravana Kannan <saravanak@google.com>
Cc: kernel-team@android.com, devicetree@vger.kernel.org,
	 linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
	 linux-acpi@vger.kernel.org
Subject: [PATCH v3 0/4] Add post-init-providers binding to improve suspend/resume stability
Date: Wed, 21 Feb 2024 15:30:20 -0800	[thread overview]
Message-ID: <20240221233026.2915061-1-saravanak@google.com> (raw)

This patch series adds a "post-init-providers" device tree binding that
can be used to break dependency cycles in device tree and enforce a more
determinstic probe/suspend/resume order. This will also improve the
stability of global async probing and async suspend/resume and allow us
to enable them more easily. Yet another step away from playing initcall
chicken with probing and step towards fully async probing and
suspend/resume.

Patch 3 (the binding documentation) provides a lot more details and
examples.

v2->v3:
- Changes doc/code from "post-init-supplier" to "post-init-providers"
- Fixed some wording that was ambiguous for Conor.
- Fixed indentation, additionalProperties and white space issues in the
  yaml syntax.
- Fixed syntax errors in the example.

v1->v2:
- Addressed Documentation/commit text errors pointed out by Rob
- Reordered MAINTAINERS chunk as pointed out by Krzysztof

Saravana Kannan (4):
  driver core: Adds flags param to fwnode_link_add()
  driver core: Add FWLINK_FLAG_IGNORE to completely ignore a fwnode link
  dt-bindings: Add post-init-providers property
  of: property: fw_devlink: Add support for "post-init-providers"
    property

 .../bindings/post-init-providers.yaml         | 105 ++++++++++++++++++
 MAINTAINERS                                   |  13 ++-
 drivers/base/core.c                           |  14 ++-
 drivers/firmware/efi/sysfb_efi.c              |   2 +-
 drivers/of/property.c                         |  17 ++-
 include/linux/fwnode.h                        |   5 +-
 6 files changed, 142 insertions(+), 14 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/post-init-providers.yaml

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2.44.0.rc0.258.g7320e95886-goog