diff options
Diffstat (limited to 'src/soc/nvidia/tegra124/power.c')
| -rw-r--r-- | src/soc/nvidia/tegra124/power.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/src/soc/nvidia/tegra124/power.c b/src/soc/nvidia/tegra124/power.c index 760d058712..ec44a0fb02 100644 --- a/src/soc/nvidia/tegra124/power.c +++ b/src/soc/nvidia/tegra124/power.c @@ -21,6 +21,7 @@ #include <arch/io.h> #include <console/console.h> #include <soc/addressmap.h> +#include <soc/clock.h> #include "pmc.h" #include "power.h" @@ -32,6 +33,11 @@ static int partition_powered(int id) return read32(&pmc->pwrgate_status) & (0x1 << id); } +static int partition_clamp_on(int id) +{ + return read32(&pmc->clamp_status) & (0x1 << id); +} + static void power_ungate_partition(uint32_t id) { printk(BIOS_INFO, "Ungating power partition %d.\n", id); @@ -51,34 +57,30 @@ static void power_ungate_partition(uint32_t id) // Wait for the partition to be powered. while (!partition_powered(id)) ; + + // Wait for clamp off. + while (partition_clamp_on(id)) + ; } printk(BIOS_INFO, "Ungated power partition %d.\n", id); } -void power_enable_cpu_rail(void) +void power_enable_and_ungate_cpu(void) { - // Set the power gate timer multiplier to 8 (why 8?). - uint32_t pwrgate_timer_mult = read32(&pmc->pwrgate_timer_mult); - pwrgate_timer_mult |= (0x3 << 0); - /* - * From U-Boot: - * Set CPUPWRGOOD_TIMER - APB clock is 1/2 of SCLK (102MHz), - * set it for 5ms as per SysEng (102MHz/5mS = 510000). + * Set CPUPWRGOOD_TIMER - APB clock is 1/2 of SCLK (150MHz), + * set it for 5ms as per SysEng (5ms * PCLK_KHZ * 1000 / 1s). */ - write32(510000, &pmc->cpupwrgood_timer); - - power_ungate_partition(POWER_PARTID_CRAIL); + write32((TEGRA_PCLK_KHZ * 5), &pmc->cpupwrgood_timer); uint32_t cntrl = read32(&pmc->cntrl); cntrl &= ~PMC_CNTRL_CPUPWRREQ_POLARITY; cntrl |= PMC_CNTRL_CPUPWRREQ_OE; write32(cntrl, &pmc->cntrl); -} -void power_ungate_cpu(void) -{ + power_ungate_partition(POWER_PARTID_CRAIL); + // Ungate power to the non-core parts of the fast cluster. power_ungate_partition(POWER_PARTID_C0NC); |