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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/st,m41t93.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ST M41T93 RTC and compatible
maintainers:
- Akhilesh Patil <akhilesh@ee.iitb.ac.in>
description:
ST M41T93 is spi based Real Time Clock (RTC) with time, date,
alarm, watchdog, square wave clock output, 8 bit timer and
7 bytes of user SRAM.
properties:
compatible:
enum:
- st,m41t93
reg:
maxItems: 1
"#clock-cells":
const: 0
required:
- compatible
- reg
allOf:
- $ref: rtc.yaml
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
rtc@0 {
compatible = "st,m41t93";
reg = <0>;
#clock-cells = <0>;
spi-max-frequency = <2000000>;
};
};
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