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

From: Jeremy Kerr
Date: Wed Jan 04 2023 - 19:55:34 EST


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