linux-kernel - [PATCH v2 2/6] rtc: m41t93: add device tree support

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Message-ID: <3ec83583754d7db70ded369efd9818e1b65670ef.1757510157.git.akhilesh@ee.iitb.ac.in>
Date: Wed, 10 Sep 2025 19:23:00 +0530
From: Akhilesh Patil <akhilesh@...iitb.ac.in>
To: alexandre.belloni@...tlin.com, krzk+dt@...nel.org, robh@...nel.org,
	conor+dt@...nel.org
Cc: skhan@...uxfoundation.org, linux-rtc@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	akhileshpatilvnit@...il.com
Subject: [PATCH v2 2/6] rtc: m41t93: add device tree support

Add device tree support for m41t93 rtc by adding of_match_table.
Define compatible string - "st,m41t93" which can be used to instantiate
this rtc device via DT node.

Signed-off-by: Akhilesh Patil <akhilesh@...iitb.ac.in>
---
 drivers/rtc/rtc-m41t93.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/rtc/rtc-m41t93.c b/drivers/rtc/rtc-m41t93.c
index 9444cb5f5190..4e803ff0ce49 100644
--- a/drivers/rtc/rtc-m41t93.c
+++ b/drivers/rtc/rtc-m41t93.c
@@ -191,9 +191,16 @@ static int m41t93_probe(struct spi_device *spi)
 	return 0;
 }
 
+static const struct of_device_id m41t93_dt_match[] = {
+	{ .compatible = "st,m41t93" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, m41t93_dt_match);
+
 static struct spi_driver m41t93_driver = {
 	.driver = {
 		.name	= "rtc-m41t93",
+		.of_match_table = m41t93_dt_match,
 	},
 	.probe	= m41t93_probe,
 };
-- 
2.34.1