| /linux-6.1.9/drivers/rtc/ |
| D | Kconfig | 3 # RTC class/drivers configuration
19 Generic RTC class support. If you say yes here, you will
26 bool "Set system time from RTC on startup and resume"
30 the value read from a specified RTC device. This is useful to avoid
34 string "RTC used to set the system time"
38 The RTC device that will be used to (re)initialize the system
50 sleep states. Do not specify an RTC here unless it stays powered
54 bool "Set the RTC time based on NTP synchronization"
58 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
62 string "RTC used to synchronize NTP adjustment"
[all …]
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| /linux-6.1.9/Documentation/admin-guide/ |
| D | rtc.rst | 2 Real Time Clock (RTC) Drivers for Linux
16 Linux has two largely-compatible userspace RTC API families you may
19 * /dev/rtc ... is the RTC provided by PC compatible systems,
23 supported by a wide variety of RTC chips on all systems.
27 RTCs use the same API to make requests in both RTC frameworks (using
29 same functionality. For example, not every RTC is hooked up to an
91 the process of doing this, the kernel briefly turns off RTC periodic
94 whatever) then the kernel will keep its hands off the RTC, allowing you
97 The alarm and/or interrupt frequency are programmed into the RTC via
108 New portable "RTC Class" drivers: /dev/rtcN
[all …]
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| /linux-6.1.9/Documentation/ABI/testing/ |
| D | sysfs-class-rtc | 6 The rtc/ class subdirectory belongs to the RTC subsystem.
14 to each RTC device.
21 (RO) RTC-provided date in YYYY-MM-DD format
28 (RO) 1 if the RTC provided the system time at boot via the
37 from this RTC.
44 (RO) The name of the RTC corresponding to this sysfs directory
51 Valid time range for the RTC, as seconds from epoch, formatted
59 (RO) RTC-provided time as the number of seconds since the epoch
66 (RO) RTC-provided time in 24-hour notation (hh:mm:ss)
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| D | rtc-cdev | 9 * RTC_RD_TIME, RTC_SET_TIME: Read or set the RTC time. Time
36 * RTC_VL_READ: Read the voltage inputs status of the RTC when
40 * RTC_VL_CLEAR: Clear the voltage status of the RTC. Some RTCs
45 also supported by the newer RTC class framework. However,
49 by the RTC class framework, but can't be supported by the older
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| /linux-6.1.9/Documentation/devicetree/bindings/rtc/ |
| D | trivial-rtc.yaml | 13 This is a list of trivial RTC devices that have simple device tree
27 # I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
31 # Extremely Accurate I²C RTC with Integrated Crystal and SRAM
33 # EM Microelectronic EM3027 RTC
44 # Intersil ISL1208 Low Power RTC with Battery Backed SRAM
46 # Intersil ISL1218 Low Power RTC with Battery Backed SRAM
76 # Xircom X1205 I2C RTC
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| D | isil,isl12026.txt | 1 ISL12026 I2C RTC/EEPROM
3 ISL12026 is an I2C RTC/EEPROM combination device. The RTC and control
5 at bus address 0x57. The canonical "reg" value will be for the RTC portion.
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| D | rtc-palmas.txt | 1 Palmas RTC controller bindings
5 - "ti,palmas-rtc" for palma series of the RTC controller
6 - interrupts: Interrupt number of RTC submodule on device.
11 TPS80036 supports the backup battery for powering the RTC when main
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| D | moxa,moxart-rtc.txt | 6 - gpio-rtc-sclk : RTC sclk gpio, with zero flags
7 - gpio-rtc-data : RTC data gpio, with zero flags
8 - gpio-rtc-reset : RTC reset gpio, with zero flags
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| D | rtc.yaml | 7 title: RTC Generic Binding
24 Tells whether the battery/supercap of the RTC (if any) is
38 If provided, the default hardware range supported by the RTC is
57 from the RTC main power supply.
67 The RTC is able to reset the machine.
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| D | rtc-omap.txt | 5 - "ti,da830-rtc" - for RTC IP used similar to that on DA8xx SoC family.
6 - "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family.
7 This RTC IP has special WAKE-EN Register to enable
11 - "ti,am4372-rtc" - for RTC IP used similar to that on AM437X SoC family.
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| D | armada-380-rtc.txt | 3 RTC controller for the Armada 38x, 7K and 8K SoCs
12 * "rtc" for the RTC registers
15 - interrupts: IRQ line for the RTC.
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| D | rtc-mt6397.txt | 1 Device-Tree bindings for MediaTek PMIC based RTC
3 MediaTek PMIC based RTC is an independent function of MediaTek PMIC that works
4 as a type of multi-function device (MFD). The RTC can be configured and set up
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| D | rtc-meson.txt | 1 * Amlogic Meson6, Meson8, Meson8b and Meson8m2 RTC
11 - interrupts: the interrupt line of the RTC block.
13 - vdd-supply: reference to the power supply of the RTC block.
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| D | pxa-rtc.txt | 1 * PXA RTC
3 PXA specific RTC driver.
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| /linux-6.1.9/arch/sh/kernel/cpu/sh4/ |
| D | setup-sh4-202.c | 89 HUDI, TMU0, TMU1, TMU2, RTC, SCIF, WDT, enumerator
96 INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
97 INTC_VECT(RTC, 0x4c0),
104 { 0xffd00004, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
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| /linux-6.1.9/Documentation/devicetree/bindings/spi/ |
| D | icpdas-lp8841-spi-rtc.txt | 1 * ICP DAS LP-8841 SPI Controller for RTC
3 ICP DAS LP-8841 contains a DS-1302 RTC. RTC is connected to an IO
7 Master output is set on low clock and sensed by the RTC on the rising
8 edge. Master input is set by the RTC on the trailing edge and is sensed
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| /linux-6.1.9/arch/sh/kernel/cpu/sh3/ |
| D | setup-sh7705.c | 31 RTC, WDT, REF_RCMI, enumerator
49 INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
50 INTC_VECT(RTC, 0x4c0),
56 { 0xfffffee2, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
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| D | setup-sh7710.c | 28 RTC, WDT, REF, enumerator
51 INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
52 INTC_VECT(RTC, 0x4c0),
58 { 0xfffffee2, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
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| D | setup-sh770x.c | 32 RTC, WDT, REF, enumerator
38 INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
39 INTC_VECT(RTC, 0x4c0),
68 { 0xfffffee2, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
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| D | setup-sh7720.c | 223 TMU0, TMU1, TMU2, RTC, enumerator
239 INTC_VECT(TMU2, 0x440), INTC_VECT(RTC, 0x480),
240 INTC_VECT(RTC, 0x4a0), INTC_VECT(RTC, 0x4c0),
267 { 0xA414FEE2UL, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
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| /linux-6.1.9/arch/arm64/boot/dts/marvell/ |
| D | armada-8020.dtsi | 18 /* The RTC requires external oscillator. But on Aramda 80x0, the RTC clock
20 * disable it. However, the RTC clock in CP slave is connected to the
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| D | armada-8040.dtsi | 26 /* The RTC requires external oscillator. But on Aramda 80x0, the RTC clock
28 * disable it. However, the RTC clock in CP slave is connected to the
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| /linux-6.1.9/arch/sh/boards/mach-highlander/ |
| D | irq-r7780mp.c | 23 RTC, /* RTC Alarm */ enumerator
37 INTC_IRQ(RTC, IRQ_RTC),
48 { SCIF0, SCIF1, RTC, 0, CF, 0, TP, SMBUS,
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| D | irq-r7785rp.c | 21 RTC, /* RTC Alarm */ enumerator
33 INTC_IRQ(RTC, IRQ_RTC),
48 RTC, 0, TH_ALERT, 0, 0, 0, 0, 0 } },
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| /linux-6.1.9/arch/arm/boot/dts/ |
| D | kirkwood-nas2big.dts | 31 /* The on-chip RTC is not powered (no supercap). */
92 * An external I2C RTC (Dallas DS1337S+) is used. This allows
93 * to power-up the board on an RTC alarm. The external RTC can
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