Merge tag 'rtc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux (13f6f62f) · Commits · 戴 / test

Documentation/devicetree/bindings/rtc/alphascale,asm9260-rtc.txt

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		* Alphascale asm9260 SoC Real Time Clock

		Required properties:
		- compatible: Should be "alphascale,asm9260-rtc"
		- reg: Physical base address of the controller and length
		of memory mapped region.
		- interrupts: IRQ line for the RTC.
		- clocks: Reference to the clock entry.
		- clock-names: should contain:
		* "ahb" for the SoC RTC clock

		Example:
		rtc0: rtc@800a0000 {
		compatible = "alphascale,asm9260-rtc";
		reg = <0x800a0000 0x100>;
		clocks = <&acc CLKID_AHB_RTC>;
		clock-names = "ahb";
		interrupts = <2>;
		};

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		Epson RX6110 Real Time Clock
		============================

		The Epson RX6110 can be used with SPI or I2C busses. The kind of
		bus depends on the SPISEL pin and can not be configured via software.

		I2C mode
		--------

		Required properties:
		- compatible: should be: "epson,rx6110"
		- reg : the I2C address of the device for I2C

		Example:

		rtc: rtc@32 {
		compatible = "epson,rx6110"
		reg = <0x32>;
		};

		SPI mode
		--------

		Required properties:
		- compatible: should be: "epson,rx6110"
		- reg: chip select number
		- spi-cs-high: RX6110 needs chipselect high
		- spi-cpha: RX6110 works with SPI shifted clock phase
		- spi-cpol: RX6110 works with SPI inverse clock polarity

		Example:

		rtc: rtc@3 {
		compatible = "epson,rx6110"
		reg = <3>
		spi-cs-high;
		spi-cpha;
		spi-cpol;
		};

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		* Maxim DS3231 Real Time Clock

		Required properties:
		see: Documentation/devicetree/bindings/i2c/trivial-devices.txt

		Optional property:
		- #clock-cells: Should be 1.
		- clock-output-names:
		overwrite the default clock names "ds3231_clk_sqw" and "ds3231_clk_32khz".

		Each clock is assigned an identifier and client nodes can use this identifier
		to specify the clock which they consume. Following indices are allowed:
		- 0: square-wave output on the SQW pin
		- 1: square-wave output on the 32kHz pin

		- interrupts: rtc alarm/event interrupt. When this property is selected,
		clock on the SQW pin cannot be used.

		Example:

		ds3231: ds3231@51 {
		compatible = "maxim,ds3231";
		reg = <0x68>;
		#clock-cells = <1>;
		};

		device1 {
		...
		clocks = <&ds3231 0>;
		...
		};

		device2 {
		...
		clocks = <&ds3231 1>;
		...
		};

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		* Microchip PIC32 Real Time Clock and Calendar

		The RTCC keeps time in hours, minutes, and seconds, and one half second. It
		provides a calendar in weekday, date, month, and year. It also provides a
		configurable alarm.

		Required properties:
		- compatible: should be: "microchip,pic32mzda-rtc"
		- reg: physical base address of the controller and length of memory mapped
		region.
		- interrupts: RTC alarm/event interrupt
		- clocks: clock phandle

		Example:

		rtc: rtc@1f8c0000 {
		compatible = "microchip,pic32mzda-rtc";
		reg = <0x1f8c0000 0x60>;
		interrupts = <166 IRQ_TYPE_EDGE_RISING>;
		clocks = <&PBCLK6>;
		};

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		@@ -157,6 +157,12 @@ wakealarm: The time at which the clock will generate a system wakeup
		the epoch by default, or if there's a leading +, seconds in the
		future, or if there is a leading +=, seconds ahead of the current
		alarm.
		offset: The amount which the rtc clock has been adjusted in firmware.
		Visible only if the driver supports clock offset adjustment.
		The unit is parts per billion, i.e. The number of clock ticks
		which are added to or removed from the rtc's base clock per
		billion ticks. A positive value makes a day pass more slowly,
		longer, and a negative value makes a day pass more quickly.

		IOCTL INTERFACE
		---------------