soc/mediatek: rtc: Use `bool` as return type

BUG=b:176307061
TEST=emerge-asurada coreboot; emerge-kukui coreboot emerge-oak coreboot
     boot to shell on Asurada

Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: Id31fa04edc2920c1767d9f08ab7af0ab4a15bc24
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49137
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

2 files changed, 7 insertions, 6 deletions

diff --git a/src/soc/mediatek/mt8173/include/soc/rtc.h b/src/soc/mediatek/mt8173/include/soc/rtc.h
index bb9425fe8e3d..e82d514e86c1 100644
--- a/src/soc/mediatek/mt8173/include/soc/rtc.h
+++ b/src/soc/mediatek/mt8173/include/soc/rtc.h
@@ -5,6 +5,7 @@
 
 #include <soc/pmic_wrap_common.h>
 #include <soc/rtc_common.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include "mt6391.h"
 
diff --git a/src/soc/mediatek/mt8173/rtc.c b/src/soc/mediatek/mt8173/rtc.c
index 94ec421f0dc0..d60f722564a2 100644
--- a/src/soc/mediatek/mt8173/rtc.c
+++ b/src/soc/mediatek/mt8173/rtc.c
@@ -10,7 +10,7 @@
 #define RTC_GPIO_USER_MASK	  ((1 << 13) - (1 << 8))
 
 /* initialize rtc related gpio */
-static int rtc_gpio_init(void)
+static bool rtc_gpio_init(void)
 {
 	u16 con;
 
@@ -41,21 +41,21 @@ void rtc_osc_init(void)
 }
 
 /* low power detect setting */
-static int rtc_lpd_init(void)
+static bool rtc_lpd_init(void)
 {
 	pwrap_write_field(RTC_CON, RTC_CON_LPEN, RTC_CON_LPRST, 0);
 	if (!rtc_write_trigger())
-		return 0;
+		return false;
 
 	pwrap_write_field(RTC_CON, RTC_CON_LPRST, 0, 0);
 	if (!rtc_write_trigger())
-		return 0;
+		return false;
 
 	pwrap_write_field(RTC_CON, 0, RTC_CON_LPRST, 0);
 	if (!rtc_write_trigger())
-		return 0;
+		return false;
 
-	return 1;
+	return true;
 }
 
 /* rtc init check */