PCV services

bpc

This is "nn::bpc::IBoardPowerControlManager".

Cmd	Name
0	ShutdownSystem
1	RebootSystem
2	GetWakeupReason
3	GetShutdownReason
4	GetAcOk
5	GetBoardPowerControlEvent
6	[2.0.0+] GetSleepButtonState
7	[2.0.0+] GetPowerEvent
8	[2.0.0+] CreateWakeupTimer
9	[2.0.0+] CancelWakeupTimer
10	[2.0.0+] #EnableWakeupTimerOnDevice
11	[3.0.0+] CreateWakeupTimerEx
12	[3.0.0+] GetLastEnabledWakeupTimerType
13	[3.0.0+] CleanAllWakeupTimers
14	[6.0.0+]

EnableWakeupTimerOnDevice

No input, returns a total of 0x10-bytes of output. [3.0.0+] Now returns a total of 0xC-bytes of output.

bpc:r

This is "nn::bpc::IRtcManager".

Cmd	Name
0	GetRtcTime
1	SetRtcTime
2	GetRtcResetDetected
3	[2.0.0+] ClearRtcResetDetected
4	[3.0.0+] SetUpRtcResetOnShutdown

GetExternalRtcValue / SetExternalRtcValue directly accesses the max77620_rtc0 device.

pcv

This is "nn::pcv::detail::IPcvService".

Cmd	Name
[1.0.0-7.0.1] 0	SetPowerEnabled
[1.0.0-7.0.1] 1	SetClockEnabled
[1.0.0-7.0.1] 2	SetClockRate
[1.0.0-7.0.1] 3	GetClockRate
[1.0.0-7.0.1] 4	GetState
[1.0.0-7.0.1] 5	GetPossibleClockRates
[1.0.0-7.0.1] 6	SetMinVClockRate
[1.0.0-7.0.1] 7	SetReset
[1.0.0-7.0.1] 8	SetVoltageEnabled
[1.0.0-7.0.1] 9	GetVoltageEnabled
[1.0.0-7.0.1] 10	GetVoltageRange
[1.0.0-7.0.1] 11	SetVoltageValue
[1.0.0-7.0.1] 12	GetVoltageValue
[1.0.0-7.0.1] 13	GetTemperatureThresholds
[1.0.0-7.0.1] 14	SetTemperature
[1.0.0-5.1.0] 15	Initialize
[1.0.0-5.1.0] 16	IsInitialized
[1.0.0-5.1.0] 17	Finalize
[3.0.0-7.0.1] 18	PowerOn
[3.0.0-7.0.1] 19	PowerOff
[3.0.0-7.0.1] 20	ChangeVoltage
[3.0.0-7.0.1] 21	GetPowerClockInfoEvent
[3.0.0-7.0.1] 22	GetOscillatorClock
[3.0.0-7.0.1] 23	GetDvfsTable
[3.0.0-7.0.1] 24	GetModuleStateTable
[3.0.0-7.0.1] 25	GetPowerDomainStateTable
26	[3.0.0+] GetFuseInfo
27	[5.0.0+] GetDramId
[6.0.0-7.0.1] 28	#IsPoweredOn
[6.0.0-7.0.1] 29	#GetVoltage

[7.0.0+] The type-0xA output buffers were replaced with type-0x22 output buffers, for the following: GetDvfsTable, GetModuleStateTable, and GetPowerDomainStateTable.

IsPoweredOn

Takes an u32 PowerControlTarget and returns a bool indicating the status of the requested voltage block.

GetVoltage

Takes an u32 PowerControlTarget and returns an u32 voltage value for the requested voltage block.

Modules

These are "nn::pcv::Module_X" where X is the power, clock and reset block name.

[8.0.0+] Every module name is now mapped to an ID.

Power Switch / Clocking / Reset

Name	ID	Block	Rail	Notes
0	0x40000001	CpuBus	vdd_cpu
1	0x40000002	GPU	vdd_gpu
2	0x40000003	I2S1	vdd_soc
3	0x40000004	I2S2	vdd_soc
4	0x40000005	I2S3	vdd_soc
5	0x40000006	PWM	vdd_soc
6	0x02000001	I2C1	vdd_soc
7	0x02000002	I2C2	vdd_soc
8	0x02000003	I2C3	vdd_soc
9	0x02000004	I2C4	vdd_soc
10	0x02000005	I2C5	vdd_soc
11	0x02000006	I2C6	vdd_soc
12	0x07000000	SPI1	vdd_soc
13	0x07000001	SPI2	vdd_soc
14	0x07000002	SPI3	vdd_soc
15	0x07000003	SPI4	vdd_soc
16	0x40000011	DISP1	vdd_soc
17	0x40000012	DISP2	vdd_soc
18	0x40000013	ISP	-	Not an actual block. Used for debug.
19	0x40000014	VI	-	Not an actual block. Used for debug.
20	0x40000015	SDMMC1	vdd_soc
21	0x40000016	SDMMC2	vdd_soc
22	0x40000017	SDMMC3	vdd_soc
23	0x40000018	SDMMC4	vdd_soc
24	0x40000019	OWR	-	Not an actual block. Used for debug.
25	0x4000001A	CSITE	vdd_soc
26	0x4000001B	TSEC	vdd_soc
27	0x4000001C	MSELECT	vdd_soc
28	0x4000001D	HDA2CODEC_2X	vdd_soc
29	0x4000001E	ACTMON	vdd_soc
30	0x4000001F	I2C_SLOW	vdd_soc
31	0x40000020	SOR1	vdd_soc
32	0x40000021	SATA	-	Not an actual block. Used for debug.
33	0x40000022	HDA	vdd_soc
34	0x40000023	XUSB_CORE_HOST	vdd_soc
35	0x40000024	XUSB_FALCON	vdd_soc
36	0x40000025	XUSB_FS	vdd_soc
37	0x40000026	XUSB_CORE_DEV	vdd_soc
38	0x40000027	XUSB_SS_HOSTDEV	vdd_soc
39	0x03000001	UARTA	vdd_soc
40	0x35000405	UARTB	vdd_soc
41	0x3500040F	UARTC	vdd_soc
42	0x37000001	UARTD	vdd_soc
43	0x4000002C	HOST1X	vdd_soc
44	0x4000002D	ENTROPY	vdd_soc
45	0x4000002E	SOC_THERM	vdd_soc
46	0x4000002F	VIC	vdd_soc
47	0x40000030	NVENC	vdd_soc
48	0x40000031	NVJPG	vdd_soc
49	0x40000032	NVDEC	vdd_soc
50	0x40000033	QSPI	vdd_soc
51	0x40000034	VI_I2C	-	Not an actual block. Used for debug.
52	0x40000035	TSECB	vdd_soc
53	0x40000036	APE	vdd_soc
54	0x40000037	ACLK	vdd_soc
55	0x40000038	UARTAPE	vdd_soc
56	0x40000039	EMC	vdd_soc
57	0x4000003A	PLLE0	vdd_soc
58	0x4000003B	PLLE0	vdd_soc
59	0x4000003C	DSI	vdd_soc
60	0x4000003D	MAUD	vdd_soc
61	0x4000003E	DPAUX1	vdd_soc
62	0x4000003F	MIPI_CAL	vdd_soc
63	0x40000040	UART_FST_MIPI_CAL	vdd_soc
64	0x40000041	OSC	vdd_soc
65	0x40000042	SCLK	vdd_soc
66	0x40000043	SOR_SAFE	vdd_soc
67	0x40000044	XUSB_SS	vdd_soc
68	0x40000045	XUSB_HOST	vdd_soc
69	0x40000046	XUSB_DEV	vdd_soc
70	0x40000047	EXTPERIPH1	vdd_soc
71	0x40000048	AHUB	vdd_soc
72	0x40000049	HDA2HDMICODEC	vdd_soc
73	0x4000004A	PLLP5	vdd_soc
74	0x4000004B	USBD	vdd_soc
75	0x4000004C	USB2	vdd_soc
76	0x4000004D	PCIE	vdd_soc
77	0x4000004E	AFI	vdd_soc
78	0x4000004F	PCIEXCLK	vdd_soc
79	0x40000050	PEX_USB_UPHY	vdd_soc
80	0x40000051	XUSB_PADCTL	vdd_soc
81	0x40000052	APBDMA	vdd_soc
82	0x40000053	USB2_TRK	vdd_soc
83	0x40000054	PLLE0	vdd_soc
84	0x40000055	PLLE0	vdd_soc
85	0x40000056	CEC	vdd_soc
[6.0.0+] 86	0x40000057	EXTPERIPH2	vdd_soc

Voltage

Name	Block	Notes
0	max77620_sd0
1	max77620_sd1
2	max77620_sd2
3	max77620_sd3
4	max77620_ldo0	1.2v
5	max77620_ldo1
6	max77620_ldo2	SDcard power, 1.8v - 3.3v
7	max77620_ldo3	GC ASIC 3.1v
8	max77620_ldo4	RTC power, 0.85v
9	max77620_ldo5	GC ASIC 1.8v
10	max77620_ldo6	AVDD touchscreen, 2.9v
11	max77620_ldo7
12	max77620_ldo8	DisplayPort, 1.05v
13	max77621_cpu
14	max77621_gpu
[6.0.0+] 15	max77812_cpu
[6.0.0+] 16	max77812_gpu
[6.0.0+] 17	max77812_dram

Note: max77620 GPIOs are only used internally by the driver during init, and not exposed via an API.

pcv:arb

This is "nn::pcv::IArbitrationManager".

This service no longer exists in [8.0.0+].

Cmd	Name
0	ReleaseControl

pcv:imm

This is "nn::pcv::IImmediateManager".

This service no longer exists in [8.0.0+].

Cmd	Name
0	SetClockRate

clkrst, clkrst:i

These are "nn::clkrst::IClkrstManager" and "nn::clkrst::IImmediateManager".

These were added with [8.0.0+].

Cmd	Name
0	#OpenSession
1	GetTemperatureThresholds
2	SetTemperature
3	GetPossibleClockRates
4	GetClockInfoEvent
5	GetClockModuleNumLimit

OpenSession

Takes an u32 ModuleID, an u32 ModuleUnk and returns an #IClkrstSession.

GetClockModuleNumLimit

Returns 0x1A.

IClkrstSession

This is "nn::clkrst::IClkrstSession".

Cmd	Name
0	SetClockEnabled
1	SetClockDisabled
2	SetResetAsserted
3	SetResetDeasserted
4	SetPowerEnabled
5	SetPowerDisabled
6	GetState
7	SetClockRate
8	GetClockRate
9	SetMinVClockRate
10	GetPossibleClockRates
11	GetDvfsTable

clkrst:a

This is "nn::clkrst::IArbitrationManager".

This was added with [8.0.0+].

Cmd	Name
0	#ReleaseControl

ReleaseControl

Takes an u32 ModuleID. No output.

rgltr

This is "nn::regulator::IRegulatorManager".

This was added with [8.0.0+].

Cmd	Name
0	#OpenSession
1	GetPowerDomainStateTable
2	GetPowerInfoEvent
3	GetPowerModuleNumLimit

OpenSession

Takes an u32 ModuleID and returns an #IRegulatorSession.

GetPowerModuleNumLimit

Returns 0x3.

IRegulatorSession

This is "nn::regulator::IRegulatorSession".

Cmd	Name
0	#SetVoltageEnabled
1
2	#GetVoltageEnabled
3	GetVoltageRange
4	GetVoltageValue
5	#SetVoltageValue
6	ChangeVoltage

SetVoltageEnabled

Takes a bool. Enables/disables the LDO this session was opened for.

GetVoltageEnabled

Returns a bool. True if voltage is enabled, false if not.

SetVoltageValue

Takes in a voltage in microvolts and sets the LDO to this voltage.

rtc

This was added with [8.0.0+].

Cmd	Name
0	GetRtcTime
1	SetRtcTime
2	SetRtcClientUnknownBool
3	GetRtcResetDetected
4	ClearRtcResetDetected

Commands 0, 1, 3, 4 call the same internal functions as bpc:r, except they take an extra u32 device code, where bpc:r hardcodes 0x3B000001 (max77620_rtc0).

Command 2 takes a u8 bool and a u32 device code; it opens an i2c session to the device code, and sets *(i2c_session_client_object + 0x38) = bool.

time:u, time:a, time:s

This is "nn::timesrv::detail::service::IStaticService".

Cmd	Name	Notes
0	GetStandardUserSystemClock	Returns an #ISystemClock.
1	GetStandardNetworkSystemClock	Returns an #ISystemClock.
2	GetStandardSteadyClock	Returns an #ISteadyClock.
3	GetTimeZoneService	Returns an #ITimeZoneService.
4	GetStandardLocalSystemClock	Returns an #ISystemClock.
5	[4.0.0+] GetEphemeralNetworkSystemClock	Returns an #ISystemClock.
20	[6.0.0+] GetSharedMemoryNativeHandle
30	[6.0.0+] GetStandardNetworkClockOperationEventReadableHandle
31	[6.0.0+] GetEphemeralNetworkClockOperationEventReadableHandle
50	[4.0.0+] SetStandardSteadyClockInternalOffset
100	IsStandardUserSystemClockAutomaticCorrectionEnabled
101	SetStandardUserSystemClockAutomaticCorrectionEnabled
102	[5.0.0+] GetStandardUserSystemClockInitialYear
200	[3.0.0+] IsStandardNetworkSystemClockAccuracySufficient
201	[6.0.0+] GetStandardUserSystemClockAutomaticCorrectionUpdatedTime
300	[4.0.0+] CalculateMonotonicSystemClockBaseTimePoint
400	[4.0.0+] GetClockSnapshot
401	[4.0.0+] GetClockSnapshotFromSystemClockContext
500	[4.0.0+] CalculateStandardUserSystemClockDifferenceByUser
501	[4.0.0+] CalculateSpanBetween

ISteadyClock

This is "nn::timesrv::detail::service::ISteadyClock".

Cmd	Name	Notes
0	GetCurrentTimePoint	No input, returns an output #SteadyClockTimePoint.
2	GetTestOffset	No input, returns an output #TimeSpanType.
3	SetTestOffset	Takes an input #TimeSpanType, no output.
100	[2.0.0+] GetRtcValue	No input, returns an output s64.
101	[2.0.0+] IsRtcResetDetected	No input, returns an output u8 bool.
102	[2.0.0+] GetSetupResultValue	No input, returns an output u32.
200	[3.0.0+] GetInternalOffset	No input, returns an output #TimeSpanType.
201	[3.0.0-3.0.2] SetInternalOffset	Takes an input #TimeSpanType, no output.

SteadyClockTimePoint

Offset	Size	Description
0x0	0x8	A u64 representing a point in time.
0x8	0x10	An ID representing the clock source.

This is a 0x18-byte struct.

TimeSpanType

This is an u64.

ISystemClock

This is "nn::timesrv::detail::service::ISystemClock".

Cmd	Name	Notes
0	GetCurrentTime	Returns an output #PosixTime.
1	SetCurrentTime	Takes an input #PosixTime.
2	GetSystemClockContext	Returns an output #SystemClockContext.
3	SetSystemClockContext	Takes an input #SystemClockContext.

PosixTime

This is an s64 for UTC POSIX time.

SystemClockContext

This is an 0x20-byte struct.

Offset	Size	Description
0x0	0x8	a #PosixTime representing the system clock epoch.
0x8	0x18	a #SteadyClockTimePoint

ITimeZoneService

This is "nn::timesrv::detail::service::ITimeZoneService".

Cmd	Name	Notes
0	GetDeviceLocationName	No input, returns an output #LocationName.
1	SetDeviceLocationName	Takes an input #LocationName, no output.
2	GetTotalLocationNameCount	No input, returns an output s32.
3	LoadLocationNameList
4	LoadTimeZoneRule	Takes an input #LocationName and a type-0x16 output buffer for #TimeZoneRule, no output.
5	[2.0.0+] GetTimeZoneRuleVersion	No input, returns an output #TimeZoneRuleVersion.
6	[5.0.0+] GetDeviceLocationNameAndUpdatedTime
100	ToCalendarTime	Takes an input #PosixTime and a type-0x15 input buffer for #TimeZoneRule, returns an output #CalendarTime and #CalendarAdditionalInfo.
101	ToCalendarTimeWithMyRule	Takes an input #PosixTime, returns an output #CalendarTime and #CalendarAdditionalInfo.
201	ToPosixTime	Takes an input #CalendarTime, a type-0x15 input buffer for #TimeZoneRule, an type-0xA output buffer for #PosixTime array, and returns an output s32.
202	ToPosixTimeWithMyRule	Takes an input #CalendarTime, an type-0xA output buffer for #PosixTime array, and returns an output s32.

LoadLocationNameList

Takes an input s32 LocationName_index and a type-0x6 output buffer for #LocationName, returns an output s32 for total output entries.

LocationName

This contains a TimeZone location string with a max size of 0x24 bytes.

TimeZoneRule

This is an 0x4000-byte struct. Official sw uses fixed-size 0x4000 for the buffer size with the above commands.

This is loaded from the TimeZoneBinary title with the specified LocationName under the zoneinfo/ directory, the content is then converted into this TimeZoneRule structure.

The files contained under zoneinfo/ directory are Tzif2 files without Tzif1 header and data at the begining of them (see RFC8536 for more information).

The conversion of a Tzif2 file to a TimeZoneRule structure is based on tz database code with some custom modifications (Leap seconds aren't handled, no usage of "posixrules" and Tzif1 support stripped out).

Offset	Size	Description
0x0	0x4	timecnt
0x4	0x4	typecnt
0x8	0x4	charcnt
0xC	0x1	goback
0xD	0x1	goahead
0xE	0x2	Padding
0x10	0x8 * 1000	ats
0x1f50	0x1 * 1000	types
0x2338	0x10 * 128	ttis (time type information), struct ttinfo[1000]
0x2b38	0x1 * 512	chars
0x2d38	0x4	defaulttype
0x2d3c	0x12c4	Reserved / Unused

ttinfo

This is an 0x10-byte struct. Represent a Time Type Information used in #TimeZoneRule.

Offset	Size	Description
0x0	0x4	tt_gmtoff
0x4	0x1	tt_isdst
0x5	0x3	Padding
0x8	0x4	tt_abbrind
0xC	0x1	tt_ttisstd
0xD	0x1	tt_ttisgmt
0xE	0x2	Padding

TimeZoneRuleVersion

This is an u128.

CalendarTime

Offset	Size	Description
0x0	0x2	Year
0x2	0x1	Month
0x3	0x1	Day
0x4	0x1	Hour
0x5	0x1	Minute
0x6	0x1	Second
0x7	0x1	Padding / unknown?

This is an 0x8-byte struct.

CalendarAdditionalInfo

Offset	Size	Description
0x0	0x4	0-based day-of-week.
0x4	0x4	0-based day-of-year.
0x8	0x8	Timezone name string.
0x10	0x4	0 = no DST, 1 = DST.
0x14	0x4	s32 seconds relative to UTC for this timezone.

This is an 0x18-byte struct. This stores timezone info.