diff options
Diffstat (limited to 'drivers/rtc/rtc-mc146818-lib.c')
| -rw-r--r-- | drivers/rtc/rtc-mc146818-lib.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c index 2ecd8752b088..df2829dd55ad 100644 --- a/drivers/rtc/rtc-mc146818-lib.c +++ b/drivers/rtc/rtc-mc146818-lib.c @@ -172,7 +172,20 @@ int mc146818_set_time(struct rtc_time *time) save_control = CMOS_READ(RTC_CONTROL); CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL); save_freq_select = CMOS_READ(RTC_FREQ_SELECT); - CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT); + +#ifdef CONFIG_X86 + if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD && + boot_cpu_data.x86 == 0x17) || + boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) { + CMOS_WRITE((save_freq_select & (~RTC_DIV_RESET2)), + RTC_FREQ_SELECT); + save_freq_select &= ~RTC_DIV_RESET2; + } else + CMOS_WRITE((save_freq_select | RTC_DIV_RESET2), + RTC_FREQ_SELECT); +#else + CMOS_WRITE((save_freq_select | RTC_DIV_RESET2), RTC_FREQ_SELECT); +#endif #ifdef CONFIG_MACH_DECSTATION CMOS_WRITE(real_yrs, RTC_DEC_YEAR); |