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| -rw-r--r-- | Documentation/devicetree/bindings/rtc/rtc-omap.txt | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt new file mode 100644 index 000000000..062ebb14c --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt @@ -0,0 +1,53 @@ +TI Real Time Clock + +Required properties: +- compatible: + - "ti,da830-rtc" - for RTC IP used similar to that on DA8xx SoC family. + - "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family. + This RTC IP has special WAKE-EN Register to enable + 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 + +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 +- pinctrl-0: a phandle pointing to the pin settings for the device +- pinctrl-names: should be "default" + +Optional subnodes: +- generic pinctrl node + +Required pinctrl subnodes properties: +- pins - Names of ext_wakeup pins to configure + +Optional pinctrl subnodes properties: +- input-enable - Enables ext_wakeup +- ti,active-high - Set input active high (by default active low) + +Example: + +rtc@1c23000 { + compatible = "ti,da830-rtc"; + reg = <0x23000 0x1000>; + interrupts = <19 + 19>; + interrupt-parent = <&intc>; + system-power-controller; + clocks = <&clk_32k_rtc>, <&clk_32768_ck>; + clock-names = "ext-clk", "int-clk"; + + pinctrl-0 = <&ext_wakeup>; + pinctrl-names = "default"; + + ext_wakeup: ext-wakeup { + pins = "ext_wakeup0"; + input-enable; + ti,active-high; + }; +}; |