diff options
Diffstat (limited to 'src/soc/intel/cannonlake')
-rw-r--r-- | src/soc/intel/cannonlake/Kconfig | 3 | ||||
-rw-r--r-- | src/soc/intel/cannonlake/cpu.c | 11 | ||||
-rw-r--r-- | src/soc/intel/cannonlake/include/soc/cpu.h | 3 |
3 files changed, 10 insertions, 7 deletions
diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig index dc2be28f8194..24f64b188726 100644 --- a/src/soc/intel/cannonlake/Kconfig +++ b/src/soc/intel/cannonlake/Kconfig @@ -245,6 +245,9 @@ config SOC_INTEL_COMMON_BLOCK_GSPI_CLOCK_MHZ int default 120 +config CPU_XTAL_HZ + default 24000000 + config DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ int default 216 diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c index ddedb3fed231..062203421722 100644 --- a/src/soc/intel/cannonlake/cpu.c +++ b/src/soc/intel/cannonlake/cpu.c @@ -114,19 +114,22 @@ static void enable_pm_timer_emulation(void) { msr_t msr; + if (!CONFIG_CPU_XTAL_HZ) + return; + /* * The derived frequency is calculated as follows: - * (CTC_FREQ * msr[63:32]) >> 32 = target frequency. - * Back solve the multiplier so the 3.579545MHz ACPI timer - * frequency is used. + * (clock * msr[63:32]) >> 32 = target frequency. + * Back solve the multiplier so the 3.579545MHz ACPI timer frequency is used. */ - msr.hi = (3579545ULL << 32) / CTC_FREQ; + msr.hi = (3579545ULL << 32) / CONFIG_CPU_XTAL_HZ; /* Set PM1 timer IO port and enable */ msr.lo = (EMULATE_DELAY_VALUE << EMULATE_DELAY_OFFSET_VALUE) | EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + PM1_TMR); wrmsr(MSR_EMULATE_PM_TIMER, msr); } + static void set_energy_perf_bias(u8 policy) { msr_t msr; diff --git a/src/soc/intel/cannonlake/include/soc/cpu.h b/src/soc/intel/cannonlake/include/soc/cpu.h index b356d3a9b877..3542a2b8a40d 100644 --- a/src/soc/intel/cannonlake/include/soc/cpu.h +++ b/src/soc/intel/cannonlake/include/soc/cpu.h @@ -22,9 +22,6 @@ #define C9_POWER 0xc8 #define C10_POWER 0xc8 -/* Common Timer Copy (CTC) frequency - 24MHz. */ -#define CTC_FREQ 24000000 - #define C_STATE_LATENCY_MICRO_SECONDS(limit, base) \ (((1 << ((base)*5)) * (limit)) / 1000) #define C_STATE_LATENCY_FROM_LAT_REG(reg) \ |