diff options
| author | Kevin Hilman <khilman@linaro.org> | 2015-09-14 14:22:30 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-09-14 14:22:30 -0700 |
| commit | a143f427f3e7c6d80bc1d288334706a1f8237f5f (patch) | |
| tree | 59e96413cf2013afb70bfaaca5f89937d9d7ac20 /arch/mips/mti-malta/malta-time.c | |
| parent | d9e292d3ea94ab21f028108527a908e415e856ef (diff) | |
| parent | f249a14dd1b6b341e7b5e29b64c0edae6e13b7f5 (diff) | |
Merge branch 'linux-linaro-lsk-v4.1' into linux-linaro-lsk-v4.1-rtlsk-v4.1-15.11-rtlsk-v4.1-15.10-rtlsk-v4.1-15.09-rt
Diffstat (limited to 'arch/mips/mti-malta/malta-time.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-time.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c index 185e68261f45..a7f7d9ffb402 100644 --- a/arch/mips/mti-malta/malta-time.c +++ b/arch/mips/mti-malta/malta-time.c @@ -148,6 +148,7 @@ int get_c0_perfcount_int(void) return mips_cpu_perf_irq; } +EXPORT_SYMBOL_GPL(get_c0_perfcount_int); unsigned int get_c0_compare_int(void) { @@ -165,14 +166,17 @@ unsigned int get_c0_compare_int(void) static void __init init_rtc(void) { - /* stop the clock whilst setting it up */ - CMOS_WRITE(RTC_SET | RTC_24H, RTC_CONTROL); + unsigned char freq, ctrl; - /* 32KHz time base */ - CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT); + /* Set 32KHz time base if not already set */ + freq = CMOS_READ(RTC_FREQ_SELECT); + if ((freq & RTC_DIV_CTL) != RTC_REF_CLCK_32KHZ) + CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT); - /* start the clock */ - CMOS_WRITE(RTC_24H, RTC_CONTROL); + /* Ensure SET bit is clear so RTC can run */ + ctrl = CMOS_READ(RTC_CONTROL); + if (ctrl & RTC_SET) + CMOS_WRITE(ctrl & ~RTC_SET, RTC_CONTROL); } void __init plat_time_init(void) |