rtc: m48t86: add DT support for m48t86

- get regs from device tree

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

diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c
index 481c9525b1ddbfdf709165d87e911f9cfa34b295..d65727ac283af7b4d5be4e4a7f426388efe1508d 100644 (file)
--- a/drivers/rtc/rtc-m48t86.c
+++ b/drivers/rtc/rtc-m48t86.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/bcd.h>
 #include <linux/io.h>
+#include <linux/of.h>
 
 #define M48T86_SEC             0x00
 #define M48T86_SECALRM         0x01
@@ -269,9 +270,18 @@ static int m48t86_rtc_probe(struct platform_device *pdev)
        return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id m48t86_rtc_of_ids[] = {
+       { .compatible = "dallas,rtc-m48t86" },
+       { /* end of table */ },
+};
+MODULE_DEVICE_TABLE(of, m48t86_rtc_of_ids);
+#endif
+
 static struct platform_driver m48t86_rtc_platform_driver = {
        .driver         = {
                .name   = "rtc-m48t86",
+               .of_match_table = of_match_ptr(m48t86_rtc_of_ids),
        },
        .probe          = m48t86_rtc_probe,
 };