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Subject[PATCH v8 2/2] dt-bindings: rtc: add max313xx RTCs
Date
From: Ibrahim Tilki <Ibrahim.Tilki@analog.com>

Add devicetree binding documentation for Analog Devices MAX313XX RTCs.
This combines the new models with the existing max31335 binding.

Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com>
Signed-off-by: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@analog.com>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
.../devicetree/bindings/rtc/adi,max31335.yaml | 88 ++++++++++++++++---
1 file changed, 78 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/rtc/adi,max31335.yaml b/Documentation/devicetree/bindings/rtc/adi,max31335.yaml
index 0125cf6727cc..ad8d6fec9a2b 100644
--- a/Documentation/devicetree/bindings/rtc/adi,max31335.yaml
+++ b/Documentation/devicetree/bindings/rtc/adi,max31335.yaml
@@ -1,36 +1,54 @@
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+# Copyright 2022 Analog Devices Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/adi,max31335.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

-title: Analog Devices MAX31335 RTC
+title: Analog Devices MAX313XX series I2C RTCs

maintainers:
- Antoniu Miclaus <antoniu.miclaus@analog.com>
+ - Chris Packham <chris.packham@alliedtelesis.co.nz>

-description:
- Analog Devices MAX31335 I2C RTC ±2ppm Automotive Real-Time Clock with
- Integrated MEMS Resonator.
-
-allOf:
- - $ref: rtc.yaml#
+description: Analog Devices MAX313XX series I2C RTCs.

properties:
compatible:
- const: adi,max31335
+ enum:
+ - adi,max31328
+ - adi,max31329
+ - adi,max31331
+ - adi,max31334
+ - adi,max31335
+ - adi,max31341
+ - adi,max31342
+ - adi,max31343

reg:
- maxItems: 1
+ description: I2C address of the RTC
+ items:
+ - enum: [0x68, 0x69]

interrupts:
+ description:
+ Alarm1 interrupt line of the RTC. Some of the RTCs have two interrupt
+ lines and alarm1 interrupt muxing depends on the clockin/clockout
+ configuration.
maxItems: 1

"#clock-cells":
description:
- RTC can be used as a clock source through its clock output pin.
+ RTC can be used as a clock source through its clock output pin when
+ supplied.
const: 0

+ clocks:
+ description:
+ RTC uses this clock for clock input when supplied. Clock has to provide
+ one of these four frequencies - 1Hz, 50Hz, 60Hz or 32.768kHz.
+ maxItems: 1
+
adi,tc-diode:
description:
Select the diode configuration for the trickle charger.
@@ -48,6 +66,56 @@ required:
- compatible
- reg

+allOf:
+ - $ref: rtc.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,max31328
+ - adi,max31342
+
+ then:
+ properties:
+ aux-voltage-chargeable: false
+ trickle-resistor-ohms: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,max31328
+ - adi,max31331
+ - adi,max31334
+ - adi,max31335
+ - adi,max31343
+
+ then:
+ properties:
+ clocks: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,max31341
+ - adi,max31342
+
+ then:
+ properties:
+ reg:
+ items:
+ - const: 0x69
+
+ else:
+ properties:
+ reg:
+ items:
+ - const: 0x68
+
unevaluatedProperties: false

examples:
--
2.43.2

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