xref: /linux/drivers/platform/x86/amd/pmc/Kconfig (revision ea5f6ad9ad9645733b72ab53a98e719b460d36a6)
192c2fb8fSShyam Sundar S K# SPDX-License-Identifier: GPL-2.0-only
292c2fb8fSShyam Sundar S K#
392c2fb8fSShyam Sundar S K# AMD PMC Driver
492c2fb8fSShyam Sundar S K#
592c2fb8fSShyam Sundar S K
692c2fb8fSShyam Sundar S Kconfig AMD_PMC
792c2fb8fSShyam Sundar S K	tristate "AMD SoC PMC driver"
892c2fb8fSShyam Sundar S K	depends on ACPI && PCI && RTC_CLASS && AMD_NB
95ee473bbSShyam Sundar S K	depends on SUSPEND
1092c2fb8fSShyam Sundar S K	select SERIO
1192c2fb8fSShyam Sundar S K	help
1292c2fb8fSShyam Sundar S K	  The driver provides support for AMD Power Management Controller
1392c2fb8fSShyam Sundar S K	  primarily responsible for S2Idle transactions that are driven from
1492c2fb8fSShyam Sundar S K	  a platform firmware running on SMU. This driver also provides a debug
1592c2fb8fSShyam Sundar S K	  mechanism to investigate the S2Idle transactions and failures.
1692c2fb8fSShyam Sundar S K
1792c2fb8fSShyam Sundar S K	  Say Y or M here if you have a notebook powered by AMD RYZEN CPU/APU.
1892c2fb8fSShyam Sundar S K
1992c2fb8fSShyam Sundar S K	  If you choose to compile this driver as a module the module will be
2092c2fb8fSShyam Sundar S K	  called amd-pmc.
21*2dc77993SBasavaraj Natikar
22*2dc77993SBasavaraj Natikarconfig AMD_MP2_STB
23*2dc77993SBasavaraj Natikar	bool "AMD SoC MP2 STB function"
24*2dc77993SBasavaraj Natikar	depends on AMD_PMC
25*2dc77993SBasavaraj Natikar	default AMD_PMC
26*2dc77993SBasavaraj Natikar	help
27*2dc77993SBasavaraj Natikar	  AMD MP2 STB function provides a data buffer used to log debug
28*2dc77993SBasavaraj Natikar	  information about the system execution during S2Idle suspend/resume.
29*2dc77993SBasavaraj Natikar	  A data buffer known as the STB (Smart Trace Buffer) is a circular
30*2dc77993SBasavaraj Natikar	  buffer which is a low-level log for the SoC which is used to debug
31*2dc77993SBasavaraj Natikar	  any hangs/stalls during S2Idle suspend/resume.
32*2dc77993SBasavaraj Natikar
33*2dc77993SBasavaraj Natikar	  Creates debugfs to get STB, a userspace daemon can access STB log of
34*2dc77993SBasavaraj Natikar	  last S2Idle suspend/resume which can help to debug if hangs/stalls
35*2dc77993SBasavaraj Natikar	  during S2Idle suspend/resume.
36