dt-bindings: rtc: Move trivial RTC over to a schemas of their own

The RTC generic bindings has a bunch of devices that have a pretty simple
binding, with just compatible, reg and optional interrupts properties.

This is exactly what the trivial devices YAML schema has been created for,
except that they can also have the start-year property, but not any other
generic RTC property.

Let's create a schema with those constraints.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt
index 4d6f81dccc68daf5caffc5ea49227d1745e1a748..b8d36fce5e2d232a6bf7860a6f6e711aab55a0cd 100644 (file)
--- a/Documentation/devicetree/bindings/rtc/rtc.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc.txt
@@ -1,40 +1 @@
 This file has been moved to rtc.yaml.
-
-Trivial RTCs
-------------
-
-This is a list of trivial RTC devices that have simple device tree
-bindings, consisting only of a compatible field, an address and
-possibly an interrupt line.
-
-
-Compatible             Vendor / Chip
-==========             =============
-abracon,abb5zes3       AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
-abracon,abeoz9         AB-RTCMC-32.768kHz-EOZ9: Real Time Clock/Calendar Module with I2C Interface
-dallas,ds1374          I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
-dallas,ds1672          Dallas DS1672 Real-time Clock
-dallas,ds3232          Extremely Accurate I²C RTC with Integrated Crystal and SRAM
-epson,rx8010           I2C-BUS INTERFACE REAL TIME CLOCK MODULE
-epson,rx8571           I2C-BUS INTERFACE REAL TIME CLOCK MODULE with Battery Backed RAM
-epson,rx8581           I2C-BUS INTERFACE REAL TIME CLOCK MODULE
-emmicro,em3027         EM Microelectronic EM3027 Real-time Clock
-isil,isl1208           Intersil ISL1208 Low Power RTC with Battery Backed SRAM
-isil,isl1218           Intersil ISL1218 Low Power RTC with Battery Backed SRAM
-isil,isl12022          Intersil ISL12022 Real-time Clock
-microcrystal,rv3028    Real Time Clock Module with I2C-Bus
-microcrystal,rv3029    Real Time Clock Module with I2C-Bus
-microcrystal,rv8523    Real Time Clock
-nxp,pcf2127            Real-time clock
-nxp,pcf2129            Real-time clock
-nxp,pcf8563            Real-time clock/calendar
-pericom,pt7c4338       Real-time Clock Module
-ricoh,r2025sd          I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-ricoh,r2221tl          I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-ricoh,rs5c372a         I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-ricoh,rs5c372b         I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-ricoh,rv5c386          I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-ricoh,rv5c387a         I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-sii,s35390a            2-wire CMOS real-time clock
-whwave,sd3078          I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
-xircom,x1205           Xircom X1205 I2C RTC

diff --git a/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml
new file mode 100644 (file)
index 0000000..0c12ce9
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/trivial-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trivial RTCs
+
+maintainers:
+  - Alexandre Belloni <alexandre.belloni@bootlin.com>
+
+description: |
+  This is a list of trivial RTC devices that have simple device tree
+  bindings, consisting only of a compatible field, an address and
+  possibly an interrupt line.
+
+allOf:
+  - $ref: "rtc.yaml#"
+
+properties:
+  compatible:
+    enum:
+      # AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
+      - abracon,abb5zes3
+      # AB-RTCMC-32.768kHz-EOZ9: Real Time Clock/Calendar Module with I2C Interface
+      - abracon,abeoz9
+      # I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
+      - dallas,ds1374
+      # Dallas DS1672 Real-time Clock
+      - dallas,ds1672
+      # Extremely Accurate I²C RTC with Integrated Crystal and SRAM
+      - dallas,ds3232
+      # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
+      - epson,rx8010
+      # I2C-BUS INTERFACE REAL TIME CLOCK MODULE with Battery Backed RAM
+      - epson,rx8571
+      # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
+      - epson,rx8581
+      # Intersil ISL1208 Low Power RTC with Battery Backed SRAM
+      - isil,isl1208
+      # Intersil ISL1218 Low Power RTC with Battery Backed SRAM
+      - isil,isl1218
+      # Intersil ISL12022 Real-time Clock
+      - isil,isl12022
+      # Real Time Clock Module with I2C-Bus
+      - microcrystal,rv3028
+      # Real Time Clock Module with I2C-Bus
+      - microcrystal,rv3029
+      # Real Time Clock
+      - microcrystal,rv8523
+      # Real-time clock
+      - nxp,pcf2127
+      # Real-time clock
+      - nxp,pcf2129
+      # Real-time clock/calendar
+      - nxp,pcf8563
+      # Real-time Clock Module
+      - pericom,pt7c4338
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,r2025sd
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,r2221tl
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,rs5c372a
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,rs5c372b
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,rv5c386
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - ricoh,rv5c387a
+      # 2-wire CMOS real-time clock
+      - sii,s35390a
+      # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+      - whwave,sd3078
+      # Xircom X1205 I2C RTC
+      - xircom,x1205
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  start-year: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+...