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| author | Kasper Hettinga <kasper.hettinga@gmail.com> | 2012-10-27 18:38:27 +0200 |
|---|---|---|
| committer | Pawit Pornkitprasan <p.pawit@gmail.com> | 2012-10-30 10:05:12 +0700 |
| commit | 559b0da2041036d37fd49b06a4254c8ef2834a54 (patch) | |
| tree | 7c9d9198637648355172b8e2c619dca31cc0c9dd /arch/arm | |
| parent | 3d6851e4b7c574ddc22757ff6fa47a014e4ed67a (diff) | |
| download | kernel_samsung_aries-559b0da2041036d37fd49b06a4254c8ef2834a54.zip kernel_samsung_aries-559b0da2041036d37fd49b06a4254c8ef2834a54.tar.gz kernel_samsung_aries-559b0da2041036d37fd49b06a4254c8ef2834a54.tar.bz2 | |
Add ability to under- and overvolt.
Patch set 1: original commit
Patch set 2: removed spaces
Patch set 3: increased stock voltage at 1200MHz to 1325mV
Patch set 4: changed UV interface to allow OV with Voltage Control
Patch set 5: spacing
Patch set 6: rebased
Patch set 7: allow higher OV voltage
Change-Id: Ie5f5d8ca7ed64e63b9be0aa088b99c1b8466b605
Diffstat (limited to 'arch/arm')
| -rwxr-xr-x | arch/arm/mach-s5pv210/cpufreq.c | 43 | ||||
| -rw-r--r-- | arch/arm/mach-s5pv210/mach-aries.c | 2 |
2 files changed, 42 insertions, 3 deletions
diff --git a/arch/arm/mach-s5pv210/cpufreq.c b/arch/arm/mach-s5pv210/cpufreq.c index 1f3f9a5..67f811e 100755 --- a/arch/arm/mach-s5pv210/cpufreq.c +++ b/arch/arm/mach-s5pv210/cpufreq.c @@ -98,12 +98,12 @@ static unsigned int g_dvfslockval[DVFS_LOCK_TOKEN_NUM]; //static DEFINE_MUTEX(dvfs_high_lock); #endif -const unsigned long arm_volt_max = 1350000; +const unsigned long arm_volt_max = 1400000; const unsigned long int_volt_max = 1250000; static struct s5pv210_dvs_conf dvs_conf[] = { [OC0] = { - .arm_volt = 1275000, + .arm_volt = 1325000, .int_volt = 1100000, }, [L0] = { @@ -777,3 +777,42 @@ static int __init s5pv210_cpufreq_init(void) } late_initcall(s5pv210_cpufreq_init); + +ssize_t show_UV_mV_table(struct cpufreq_policy *policy, char *buf) +{ + int i, len = 0; + for (i = 0; i <= MAX_PERF_LEVEL; i++) { + len += sprintf(buf + len, "%dmhz: %d mV\n", s5pv210_freq_table[i].frequency / 1000, dvs_conf[i].arm_volt / 1000); + } + return len; +} + +ssize_t store_UV_mV_table(struct cpufreq_policy *policy, + const char *buf, size_t count) +{ + int ret = -EINVAL; + int i = 0; + int j = 0; + int u[MAX_PERF_LEVEL + 1]; + while (j < MAX_PERF_LEVEL + 1) { + int consumed; + int val; + ret = sscanf(buf, "%d%n", &val, &consumed); + if (ret > 0) { + buf += consumed; + u[j++] = val; + } + else { + break; + } + } + + for (i = 0; i < j; i++) { + if (u[i] > arm_volt_max / 1000) { + u[i] = arm_volt_max / 1000; + } + dvs_conf[i].arm_volt = u[i] * 1000; + } + + return count; +} diff --git a/arch/arm/mach-s5pv210/mach-aries.c b/arch/arm/mach-s5pv210/mach-aries.c index 15fff7c..c41199f 100644 --- a/arch/arm/mach-s5pv210/mach-aries.c +++ b/arch/arm/mach-s5pv210/mach-aries.c @@ -413,7 +413,7 @@ static struct s5p_media_device aries_media_devs[] = { static struct s5pv210_cpufreq_voltage smdkc110_cpufreq_volt[] = { { .freq = 1200000, - .varm = 1275000, + .varm = 1325000, .vint = 1100000, }, { .freq = 1000000, |