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cpufreq: set suspend volt to 1.1V for 40nm process, fix reboot err when vdd_arm regulator is not registered

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Signed-off-by: cl <cl@rock-chips.com>
This commit is contained in:
cl
2014-10-16 11:13:05 +08:00
parent de11a1a0ad
commit ffb44e63b3
1 changed files with 14 additions and 3 deletions
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17
drivers/cpufreq/rockchip-cpufreq.c
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@@ -69,7 +69,7 @@ static struct cpufreq_frequency_table *freq_table = default_freq_table;
#define CPUFREQ_PRIVATE 0x100
static unsigned int no_cpufreq_access = 0;
static unsigned int suspend_freq = 816 * 1000;
static unsigned int suspend_volt = 1000000; // 1V
static unsigned int suspend_volt = 1100000;
static unsigned int low_battery_freq = 600 * 1000;
static unsigned int low_battery_capacity = 5; // 5%
static bool is_booting = true;
@@ -414,10 +414,21 @@ static int cpufreq_reboot_notifier_event(struct notifier_block *this, unsigned l
#endif
int rockchip_cpufreq_reboot_limit_freq(void)
{
struct regulator *regulator;
int volt = 0;
u32 rate;
dvfs_disable_temp_limit();
dvfs_clk_enable_limit(clk_cpu_dvfs_node, 1000*suspend_freq, 1000*suspend_freq);
printk("cpufreq: reboot set core rate=%lu, volt=%d\n", dvfs_clk_get_rate(clk_cpu_dvfs_node),
regulator_get_voltage(clk_cpu_dvfs_node->vd->regulator));
rate = dvfs_clk_get_rate(clk_cpu_dvfs_node);
regulator = dvfs_get_regulator("vdd_arm");
if (regulator)
volt = regulator_get_voltage(regulator);
else
pr_info("cpufreq: get arm regulator failed\n");
pr_info("cpufreq: reboot set core rate=%lu, volt=%d\n",
dvfs_clk_get_rate(clk_cpu_dvfs_node), volt);
return 0;
}