From: Taekgyun Ko <taeggyun.ko@xxxxxxxxxxx>
RTC needs to be initialized when BCD registers have invalid value.
Signed-off-by: Taekgyun Ko <taeggyun.ko@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
Changes since v1:
- Removed unnecessary parens around > operations as per Sergei Shtylyov
drivers/rtc/rtc-s3c.c | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 2040017..e96e109 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -536,10 +536,20 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
s3c_rtc_cpu_type = platform_get_device_id(pdev)->driver_data;
- if (s3c_rtc_cpu_type == TYPE_S3C64XX)
+ if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
rtc->max_user_freq = 32768;
- else
+
+ /* Check RTC Time */
+
+ for (i = S3C2410_RTCSEC; i <= S3C2410_RTCYEAR; i += 0x4) {
+ tmp = readb(s3c_rtc_base + i);
+
+ if ((tmp & 0xf) > 0x9 || ((tmp >> 4) & 0xf) > 0x9)
+ writeb(0, s3c_rtc_base + i);
+ }
+ } else {
rtc->max_user_freq = 128;
+ }
platform_set_drvdata(pdev, rtc);
--
1.6.2.5
--
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