diff options
Diffstat (limited to 'Documentation/devicetree/bindings/rtc')
7 files changed, 106 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt index 34c150577..5d3791e78 100644 --- a/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt +++ b/Documentation/devicetree/bindings/rtc/atmel,at91rm9200-rtc.txt @@ -5,6 +5,7 @@ Required properties: - reg: physical base address of the controller and length of memory mapped region. - interrupts: rtc alarm/event interrupt +- clocks: phandle to input clock. Example: @@ -12,4 +13,5 @@ rtc@fffffe00 { compatible = "atmel,at91rm9200-rtc"; reg = <0xfffffe00 0x100>; interrupts = <1 4 7>; + clocks = <&clk32k>; }; diff --git a/Documentation/devicetree/bindings/rtc/nxp,lpc1788-rtc.txt b/Documentation/devicetree/bindings/rtc/nxp,lpc1788-rtc.txt new file mode 100644 index 000000000..3c97bd180 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/nxp,lpc1788-rtc.txt @@ -0,0 +1,21 @@ +NXP LPC1788 real-time clock + +The LPC1788 RTC provides calendar and clock functionality +together with periodic tick and alarm interrupt support. + +Required properties: +- compatible : must contain "nxp,lpc1788-rtc" +- reg : Specifies base physical address and size of the registers. +- interrupts : A single interrupt specifier. +- clocks : Must contain clock specifiers for rtc and register clock +- clock-names : Must contain "rtc" and "reg" + See ../clocks/clock-bindings.txt for details. + +Example: +rtc: rtc@40046000 { + compatible = "nxp,lpc1788-rtc"; + reg = <0x40046000 0x1000>; + interrupts = <47>; + clocks = <&creg_clk 0>, <&ccu1 CLK_CPU_BUS>; + clock-names = "rtc", "reg"; +}; diff --git a/Documentation/devicetree/bindings/rtc/rtc-mxc.txt b/Documentation/devicetree/bindings/rtc/rtc-mxc.txt new file mode 100644 index 000000000..5bcd31d99 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc-mxc.txt @@ -0,0 +1,26 @@ +* Real Time Clock of the i.MX SoCs + +RTC controller for the i.MX SoCs + +Required properties: +- compatible: Should be "fsl,imx1-rtc" or "fsl,imx21-rtc". +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: IRQ line for the RTC. +- clocks: should contain two entries: + * one for the input reference + * one for the the SoC RTC +- clock-names: should contain: + * "ref" for the input reference clock + * "ipg" for the SoC RTC clock + +Example: + +rtc@10007000 { + compatible = "fsl,imx21-rtc"; + reg = <0x10007000 0x1000>; + interrupts = <22>; + clocks = <&clks IMX27_CLK_CKIL>, + <&clks IMX27_CLK_RTC_IPG_GATE>; + clock-names = "ref", "ipg"; +}; diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt index 4ba4dbd34..bf7d11ae9 100644 --- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt @@ -8,6 +8,7 @@ Required properties: Wakeup generation for event Alarm. It can also be used to control an external PMIC via the pmic_power_en pin. + - "ti,am4372-rtc" - for RTC IP used similar to that on AM437X SoC family. - reg: Address range of rtc register set - interrupts: rtc timer, alarm interrupts in order - interrupt-parent: phandle for the interrupt controller @@ -15,6 +16,8 @@ Required properties: Optional properties: - system-power-controller: whether the rtc is controlling the system power through pmic_power_en +- clocks: Any internal or external clocks feeding in to rtc +- clock-names: Corresponding names of the clocks Example: @@ -25,4 +28,6 @@ rtc@1c23000 { 19>; interrupt-parent = <&intc>; system-power-controller; + clocks = <&clk_32k_rtc>, <&clk_32768_ck>; + clock-names = "ext-clk", "int-clk"; }; diff --git a/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt b/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt index 73407f502..daf88265d 100644 --- a/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt +++ b/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt @@ -1,20 +1,23 @@ STMicroelectronics Low Power Controller (LPC) - RTC =================================================== -LPC currently supports Watchdog OR Real Time Clock functionality. +LPC currently supports Watchdog OR Real Time Clock OR Clocksource +functionality. [See: ../watchdog/st_lpc_wdt.txt for Watchdog options] +[See: ../timer/st,stih407-lpc for Clocksource options] Required properties -- compatible : Must be one of: "st,stih407-lpc" "st,stih416-lpc" - "st,stih415-lpc" "st,stid127-lpc" +- compatible : Must be: "st,stih407-lpc" - reg : LPC registers base address + size - interrupts : LPC interrupt line number and associated flags - clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt) -- st,lpc-mode : The LPC can run either one of two modes ST_LPC_MODE_RTC [0] or - ST_LPC_MODE_WDT [1]. One (and only one) mode must be - selected. +- st,lpc-mode : The LPC can run either one of three modes: + ST_LPC_MODE_RTC [0] + ST_LPC_MODE_WDT [1] + ST_LPC_MODE_CLKSRC [2] + One (and only one) mode must be selected. Example: lpc@fde05000 { diff --git a/Documentation/devicetree/bindings/rtc/ti,bq32k.txt b/Documentation/devicetree/bindings/rtc/ti,bq32k.txt new file mode 100644 index 000000000..e204906b9 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/ti,bq32k.txt @@ -0,0 +1,18 @@ +* TI BQ32000 I2C Serial Real-Time Clock + +Required properties: +- compatible: Should contain "ti,bq32000". +- reg: I2C address for chip + +Optional properties: +- trickle-resistor-ohms : Selected resistor for trickle charger + Values usable are 1120 and 20180 + Should be given if trickle charger should be enabled +- trickle-diode-disable : Do not use internal trickle charger diode + Should be given if internal trickle charger diode should be disabled +Example: + bq32000: rtc@68 { + compatible = "ti,bq32000"; + trickle-resistor-ohms = <1120>; + reg = <0x68>; + }; diff --git a/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt b/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt new file mode 100644 index 000000000..0df6f016b --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt @@ -0,0 +1,25 @@ +* Xilinx Zynq Ultrascale+ MPSoC Real Time Clock + +RTC controller for the Xilinx Zynq MPSoC Real Time Clock +Separate IRQ lines for seconds and alarm + +Required properties: +- compatible: Should be "xlnx,zynqmp-rtc" +- reg: Physical base address of the controller and length + of memory mapped region. +- interrupts: IRQ lines for the RTC. +- interrupt-names: interrupt line names eg. "sec" "alarm" + +Optional: +- calibration: calibration value for 1 sec period which will + be programmed directly to calibration register + +Example: +rtc: rtc@ffa60000 { + compatible = "xlnx,zynqmp-rtc"; + reg = <0x0 0xffa60000 0x100>; + interrupt-parent = <&gic>; + interrupts = <0 26 4>, <0 27 4>; + interrupt-names = "alarm", "sec"; + calibration = <0x198233>; +}; |