rtc: mcp795: add devicetree support

Add device tree support to the rtc-mcp795 driver.

Signed-off-by: Emil Bartczak <emilbart@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c
index 1c91ce8a6d75..025bb33b9cd2 100644
--- a/drivers/rtc/rtc-mcp795.c
+++ b/drivers/rtc/rtc-mcp795.c
@@ -20,6 +20,7 @@
 #include <linux/printk.h>
 #include <linux/spi/spi.h>
 #include <linux/rtc.h>
+#include <linux/of.h>
 
 /* MCP795 Instructions, see datasheet table 3-1 */
 #define MCP795_EEREAD   0x03
@@ -183,9 +184,18 @@ static int mcp795_probe(struct spi_device *spi)
         return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id mcp795_of_match[] = {
+        { .compatible = "maxim,mcp795" },
+        { }
+};
+MODULE_DEVICE_TABLE(of, mcp795_of_match);
+#endif
+
 static struct spi_driver mcp795_driver = {
                 .driver = {
                                 .name = "rtc-mcp795",
+                                .of_match_table = of_match_ptr(mcp795_of_match),
                 },
                 .probe = mcp795_probe,
 };