linux_dsm_epyc7002/Documentation/devicetree/bindings/rtc/rtc-ds1307.txt
Linus Torvalds bfebeb1672 RTC for 4.19
Subsystem:
  - new helpers to add custom sysfs attributes
  - struct rtc_task removal along with rtc_irq_register/rtc_irq_unregister
  - rtc_irq_set_state and rtc_irq_set_freq are not exported anymore
 
 Drivers:
  - armada38x: reset after rtc power loss
  - ds1307: now supports m41t11
  - isl1208: now supports isl1219 and tamper detection
  - pcf2127: internal SRAM support
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEXx9Viay1+e7J/aM4AyWl4gNJNJIFAlt7L0oACgkQAyWl4gNJ
 NJIB3w/+Mo5moMRnjDe+MiFzbLxe9lv3Wtdmqq0AdHQpxxOVu7LQ2O5oHQBjdMsz
 nCYPy7sIWBXzJWI+X5OByukZheWmhmsORtZw14MrmhMCY7Xt0lCHAsmHzs0yyqXT
 KnF0RL9HtSfYr4ftcOGrnY/8VZCPjI0I08AP1naVYTcX34PPGRL7KWwyxYBuwyOL
 Za2eH8snhI/QkEKx9enPsXeMvB87hkhCEFM0oTyyS5bY6L68PGzErWO4J8mWvFSH
 w1GWOvaNAg74lSe1Kgq9QtXRmhl67vwPLUX3QdxKb0HRuEInfdwDifdwU14HixE/
 t2Vj0HNpn9xZwRhCvC/LnwtQGr+53R2Ase5NSwpZvpvM8e2LgoN/W7NxoD4BGSMi
 Aal0lPUFLbzayFQC5MOIZVazrf7PzWowSFNWO66uQR3Cmt/voGtRDGbfTPHn6nvs
 kLl5kb8j0KdJOsVeDDmnVmEU0ZEmGZSqxX7oE0QiL8QMim76yZtqwy1Y13xE5nI9
 6fDA2MyQADNn5JDFMC/deL/d8hgI4Yv19tNOxNuj9yW/wFbctCG4tkremQoXHZ4n
 zLg/pdS2/iHSGKYW6ejWIS7VxwEWDbJp60Tx02LWQz40xXiUtgYh0/eYCzdfBVU/
 wXla023DFerg1irguOrSPTLLDddvOz8fW6Gh7DMT+nxjuxdh+lw=
 =cAQ9
 -----END PGP SIGNATURE-----

Merge tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "It is now possible to add custom sysfs attributes while avoiding a
  possible race condition. Unused code has been removed resulting in a
  nice reduction of the code base. And more drivers have been switched
  to SPDX by their maintainers.

 Summary:

  Subsystem:
   - new helpers to add custom sysfs attributes
   - struct rtc_task removal along with rtc_irq_[un]register()
   - rtc_irq_set_state and rtc_irq_set_freq are not exported anymore

  Drivers:
   - armada38x: reset after rtc power loss
   - ds1307: now supports m41t11
   - isl1208: now supports isl1219 and tamper detection
   - pcf2127: internal SRAM support"

* tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits)
  rtc: ds1307: simplify hwmon config
  rtc: s5m: Add SPDX license identifier
  rtc: maxim: Add SPDX license identifiers
  rtc: isl1219: add device tree documentation
  rtc: isl1208: set ev-evienb bit from device tree
  rtc: isl1208: Add "evdet" interrupt source for isl1219
  rtc: isl1208: add support for isl1219 with tamper detection
  rtc: sysfs: facilitate attribute add to rtc device
  rtc: remove struct rtc_task
  char: rtc: remove task handling
  rtc: pcf85063: preserve control register value between stop and start
  rtc: sh: remove unused variable rtc_dev
  rtc: unexport rtc_irq_set_*
  rtc: simplify rtc_irq_set_state/rtc_irq_set_freq
  rtc: remove irq_task and irq_task_lock
  rtc: remove rtc_irq_register/rtc_irq_unregister
  rtc: sh: remove dead code
  rtc: sa1100: don't set PIE frequency
  rtc: ds1307: support m41t11 variant
  rtc: ds1307: fix data pointer to m41t0
  ...
2018-08-20 16:30:27 -07:00

45 lines
1.2 KiB
Plaintext

Dallas DS1307 and compatible RTC
Required properties:
- compatible: should be one of:
"dallas,ds1307",
"dallas,ds1308",
"dallas,ds1337",
"dallas,ds1338",
"dallas,ds1339",
"dallas,ds1388",
"dallas,ds1340",
"dallas,ds1341",
"maxim,ds3231",
"st,m41t0",
"st,m41t00",
"st,m41t11",
"microchip,mcp7940x",
"microchip,mcp7941x",
"pericom,pt7c4338",
"epson,rx8025",
"isil,isl12057"
- reg: I2C bus address of the device
Optional properties:
- interrupts: rtc alarm interrupt.
- clock-output-names: From common clock binding to override the default output
clock name
- wakeup-source: Enables wake up of host system on alarm
- trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
Selected resistor for trickle charger
Possible values are 250, 2000, 4000
Should be given if trickle charger should be enabled
- trickle-diode-disable : ds1339, ds1340 and ds 1388 only
Do not use internal trickle charger diode
Should be given if internal trickle charger diode should be disabled
Example:
rtc1: ds1339@68 {
compatible = "dallas,ds1339";
reg = <0x68>;
interrupt-parent = <&gpio4>;
interrupts = <20 0>;
trickle-resistor-ohms = <250>;
};