| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | TI Real Time Clock |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible: |
| 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 |
| 8 | Wakeup generation for event Alarm. It can also be |
| 9 | used to control an external PMIC via the |
| 10 | pmic_power_en pin. |
| 11 | - "ti,am4372-rtc" - for RTC IP used similar to that on AM437X SoC family. |
| 12 | - reg: Address range of rtc register set |
| 13 | - interrupts: rtc timer, alarm interrupts in order |
| 14 | |
| 15 | Optional properties: |
| 16 | - system-power-controller: whether the rtc is controlling the system power |
| 17 | through pmic_power_en |
| 18 | - clocks: Any internal or external clocks feeding in to rtc |
| 19 | - clock-names: Corresponding names of the clocks |
| 20 | - pinctrl-0: a phandle pointing to the pin settings for the device |
| 21 | - pinctrl-names: should be "default" |
| 22 | |
| 23 | Optional subnodes: |
| 24 | - generic pinctrl node |
| 25 | |
| 26 | Required pinctrl subnodes properties: |
| 27 | - pins - Names of ext_wakeup pins to configure |
| 28 | |
| 29 | Optional pinctrl subnodes properties: |
| 30 | - input-enable - Enables ext_wakeup |
| 31 | - ti,active-high - Set input active high (by default active low) |
| 32 | |
| 33 | Example: |
| 34 | |
| 35 | rtc@1c23000 { |
| 36 | compatible = "ti,da830-rtc"; |
| 37 | reg = <0x23000 0x1000>; |
| 38 | interrupts = <19 |
| 39 | 19>; |
| 40 | interrupt-parent = <&intc>; |
| 41 | system-power-controller; |
| 42 | clocks = <&clk_32k_rtc>, <&clk_32768_ck>; |
| 43 | clock-names = "ext-clk", "int-clk"; |
| 44 | |
| 45 | pinctrl-0 = <&ext_wakeup>; |
| 46 | pinctrl-names = "default"; |
| 47 | |
| 48 | ext_wakeup: ext-wakeup { |
| 49 | pins = "ext_wakeup0"; |
| 50 | input-enable; |
| 51 | ti,active-high; |
| 52 | }; |
| 53 | }; |