[v4] Add reset control for mfd syscon devices

[PATCH v4 0/2] Add reset control for mfd syscon devices

Jeremy Kerr posted 2 patches 2 years, 8 months ago

Diff against v1 v2 v3
Download series mbox

.../devicetree/bindings/mfd/syscon.yaml       |  3 +++
drivers/mfd/syscon.c                          | 27 ++++++++++++++-----
2 files changed, 24 insertions(+), 6 deletions(-)

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[PATCH v4 0/2] Add reset control for mfd syscon devices

Posted by Jeremy Kerr 2 years, 8 months ago

This RFC series adds a facility for syscon devices to control a reset
line when probed; we have instances of simple register-only syscon
resources that need deassertion of a reset line for the register set to
be accessible.

Rather than requiring a specific driver to implement this, it'd be nice
to use the generic syscon device and the generic resets linkage to do
so.

Any comments/queries/etc are most welcome.

Cheers,


Jeremy

---
v2:
 - use direct syscon registration interface, rather than the (unused)
   syscon platform device code
 - consequently, add regmap infrastructure to attach a reset
   controller, in a similar way to attaching clocks
v3:
 - drop regmap reset control and just do a direct deassert from the syscon
   driver
v4:
 - collapse unnecessary else block in syscon driver reset control

---
Jeremy Kerr (2):
  dt-bindings: mfd/syscon: Add resets property
  mfd: syscon: allow reset control for syscon devices

 .../devicetree/bindings/mfd/syscon.yaml       |  3 +++
 drivers/mfd/syscon.c                          | 27 ++++++++++++++-----
 2 files changed, 24 insertions(+), 6 deletions(-)

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2.38.1