rtc: ep93xx: add DT support for Cirrus EP93xx

- Find register range from the device tree.

Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>

diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index acae7f16808f76f0493c330d893d61d8bbb95270..f3350fcb20bfc656d6de3179a96c1bb5a853861c 100644 (file)
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -8,6 +8,7 @@
 
 #include <linux/module.h>
 #include <linux/rtc.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/gfp.h>
@@ -148,9 +149,18 @@ static int ep93xx_rtc_probe(struct platform_device *pdev)
        return devm_rtc_register_device(ep93xx_rtc->rtc);
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id ep93xx_rtc_of_ids[] = {
+       { .compatible = "cirrus,ep93xx-rtc" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, ep93xx_rtc_of_ids);
+#endif
+
 static struct platform_driver ep93xx_rtc_driver = {
        .driver         = {
                .name   = "ep93xx-rtc",
+               .of_match_table = of_match_ptr(ep93xx_rtc_of_ids),
        },
        .probe          = ep93xx_rtc_probe,
 };