Merge tag 'rtc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "There is nothing scary this cycle, mostly driver fixes and updates.

  The core fix has been in for a while and has been tested on multiple
  kernel revisions by multiple teams.

  Core:
   - Fix setting the alarm to the next expiring timer

  New drivers:
   - Mediatek MT7622 RTC
   - NXP PCF85363
   - Spreadtrum SC27xx PMIC RTC

  Drivers updates:
   - Use generic nvmem to expose the Non volatile ram for ds1305,
     ds1511, m48t86 and omap
   - abx80x: solve possible race condition at probe
   - armada38x: support trimming the RTC oscillator
   - at91rm9200: fix reading the alarm value at boot
   - ds1511: allow waking platform
   - m41t80: rework square wave output
   - pcf8523: support trimming the RTC oscillator
   - pcf8563: fix clock output rate
   - pl031: make interrupt optional
   - xgene: fix suspend/resume"

* tag 'rtc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits)
  dt-bindings: rtc: imxdi: Improve the bindings text
  rtc: sc27xx: Add Spreadtrum SC27xx PMIC RTC driver
  dt-bindings: rtc: Add Spreadtrum SC27xx RTC documentation
  rtc: at91rm9200: fix reading alarm value
  rtc: at91rm9200: stop calculating yday in at91_rtc_readalarm
  rtc: sysfs: Use time64_t variables to set time/alarm
  rtc: xgene: mark PM functions as __maybe_unused
  rtc: xgene: Fix suspend/resume
  rtc: pcf8563: don't alway enable the alarm
  rtc: pcf8563: fix output clock rate
  rtc: rx8010: Fix for incorrect return value
  rtc: rx8010: Specify correct address for RX8010_RESV31
  rtc: rx8010: Remove duplicate define
  rtc: m41t80: remove unneeded checks from m41t80_sqw_set_rate
  rtc: m41t80: avoid i2c read in m41t80_sqw_is_prepared
  rtc: m41t80: avoid i2c read in m41t80_sqw_recalc_rate
  rtc: m41t80: fix m41t80_sqw_round_rate return value
  rtc: m41t80: m41t80_sqw_set_rate should return 0 on success
  rtc: add support for NXP PCF85363 real-time clock
  rtc: omap: Support scratch registers
  ...

1 files changed, 21 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt b/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
new file mode 100644
index 000000000000..09fe8f51476f
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
@@ -0,0 +1,21 @@
+Device-Tree bindings for MediaTek SoC based RTC
+
+Required properties:
+- compatible	    : Should be
+			"mediatek,mt7622-rtc", "mediatek,soc-rtc" : for MT7622 SoC
+- reg 		    : Specifies base physical address and size of the registers;
+- interrupts	    : Should contain the interrupt for RTC alarm;
+- clocks	    : Specifies list of clock specifiers, corresponding to
+		      entries in clock-names property;
+- clock-names	    : Should contain "rtc" entries
+
+Example:
+
+rtc: rtc@10212800 {
+	compatible = "mediatek,mt7622-rtc",
+		     "mediatek,soc-rtc";
+	reg = <0 0x10212800 0 0x200>;
+	interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_LOW>;
+	clocks = <&topckgen CLK_TOP_RTC>;
+	clock-names = "rtc";
+};