Documentation/driver-api/pwrseq.rst

1 .. SPDX-License-Identifier: GPL-2.0-only
13 This framework is designed to abstract complex power-up sequences that are
14 shared between multiple logical devices in the linux kernel.
19 mitigate any potential conflicts between multiple users behind the scenes.
22 --------
30     define dependencies in the form of other units that must be enabled before
44     entry point to the provider layer. It ensures coherence between different
50 The consumer API is aimed to be as simple as possible. The driver interested in
52 specify the name of the target it wants to reach in the sequence after calling
63 consumers but it makes up for it in flexibility.
65 Each provider can logically split the power-up sequence into descrete chunks
67 consumers may use as the final point in the sequence that they wish to reach.
73 -------------------------
75 The main difference between pwrseq and other linux kernel providers is the
83 device-tree node representing a power management unit of a chipset and the
85 relevant regulator supply properties in device tree and see if they lead from
91 .. kernel-doc:: include/linux/pwrseq/provider.h
94 .. kernel-doc:: drivers/power/sequencing/core.c