shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 20:07:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

ODROID-COMMON: cpufreq: Add 'max_freq_a55=' for ODROID-C4

Browse Source 
Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Change-Id: Ibdb7045d980a44358113881d5579ce20945e89da
This commit is contained in:
Dongjin Kim
2020-03-26 11:44:40 +09:00
parent 9c4b862152
commit a1b5589413
1 changed files with 58 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
drivers/amlogic/cpufreq/meson-cpufreq.c
View File

@@ -45,15 +45,10 @@
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
#include <linux/platform_data/board_odroid.h>
#endif
#ifdef CONFIG_ARCH_MESON64_ODROIDN2
#define OF_NODE_CPU_OPP_0 "/cpu_opp_table0/" /* Core A53 */
#define OF_NODE_CPU_OPP_1 "/cpu_opp_table1/" /* Core A73 */
static unsigned long max_freq[2] = {
1896000, /* defalut freq for A53 is 1.896GHz */
1800000 /* defalut freq for A73 is 1.800GHz */
0,
0,
};
#endif
@@ -479,9 +474,6 @@ static int meson_cpufreq_init(struct cpufreq_policy *policy)
unsigned int volt_tol = 0;
unsigned long freq_hz = 0;
int cpu = 0, ret = 0, tables_index;
#ifdef CONFIG_ARCH_MESON64_ODROIDN2
int i = 0;
#endif
if (!policy) {
pr_err("invalid cpufreq_policy\n");
@@ -593,16 +585,18 @@ static int meson_cpufreq_init(struct cpufreq_policy *policy)
goto free_reg;
}
#ifdef CONFIG_ARCH_MESON64_ODROIDN2
for (i = 0; board_is_odroidn2() &&
(freq_table[cur_cluster][i].frequency != CPUFREQ_TABLE_END)
&& max_freq[cur_cluster]; i++) {
if (freq_table[cur_cluster][i].frequency > max_freq[cur_cluster]) {
pr_info("dvfs [%s] - cluster %d freq %d\n",
__func__, cur_cluster,
freq_table[cur_cluster][i].frequency);
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
if (board_is_odroidn2() || board_is_odroidc4()) {
int i = 0;
for (i = 0; (freq_table[cur_cluster][i].frequency != CPUFREQ_TABLE_END)
&& max_freq[cur_cluster]; i++) {
if (freq_table[cur_cluster][i].frequency > max_freq[cur_cluster]) {
pr_info("dvfs [%s] - cluster %d freq %d\n",
__func__, cur_cluster,
freq_table[cur_cluster][i].frequency);
freq_table[cur_cluster][i].frequency = CPUFREQ_TABLE_END;
freq_table[cur_cluster][i].frequency = CPUFREQ_TABLE_END;
}
}
}
#endif
@@ -683,58 +677,49 @@ free_np:
return ret;
}
#ifdef CONFIG_ARCH_MESON64_ODROIDN2
static int __init get_max_freq_a53(char *str)
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
static int __init get_max_freq_cortex(unsigned int cluster, char *str)
{
int ret;
unsigned long value;
if (!board_is_odroidn2())
if (!str || (cluster >= ARRAY_SIZE(max_freq)))
return -EINVAL;
ret = kstrtoul(str, 0, &value);
if (ret == 0) {
max_freq[cluster] = value * 1000; /* in unit kHz */
pr_info("max cpufreq of cluster%d : %ldkHz\n",
cluster, max_freq[cluster]);
return 0;
if (str == NULL) {
/* default freq value for A53 core is 1.896GHz */
pr_info("[%s] no data\n", __func__);
return -EINVAL;
}
ret = kstrtoul(str, 0, &max_freq[0]);
if (ret != 0) {
pr_info("[%s] invalid data - err %d, str %s\n",
__func__, ret, str);
return -EINVAL;
}
/* in unit kHz */
max_freq[0] *= 1000;
pr_info("[%s] - max_freq : %ld\n", __func__, max_freq[0]);
pr_debug("[%s] invalid data - err %d, str %s\n", __func__, ret, str);
return 0;
return -EINVAL;
}
static int __init get_max_freq_a53(char *str)
{
if (board_is_odroidn2())
return get_max_freq_cortex(0, str);
return -EINVAL;
}
__setup("max_freq_a53=", get_max_freq_a53);
static int __init get_max_freq_a55(char *str)
{
if (board_is_odroidc4())
return get_max_freq_cortex(0, str);
return -EINVAL;
}
__setup("max_freq_a55=", get_max_freq_a55);
static int __init get_max_freq_a73(char *str)
{
int ret;
if (!board_is_odroidn2())
return 0;
if (str == NULL) {
/* default freq value for A73 core is 1.800GHz */
pr_info("[%s] no data\n", __func__);
return -EINVAL;
}
ret = kstrtoul(str, 0, &max_freq[1]);
if (ret != 0) {
pr_info("[%s] invalid data - err %d, str %s\n",
__func__, ret, str);
return -EINVAL;
}
/* in unit kHz */
max_freq[1] *= 1000;
pr_info("[%s] - max_freq : %ld\n", __func__, max_freq[1]);
return 0;
if (board_is_odroidn2())
return get_max_freq_cortex(1, str);
return -EINVAL;
}
__setup("max_freq_a73=", get_max_freq_a73);
#endif
@@ -829,6 +814,20 @@ static int meson_cpufreq_probe(struct platform_device *pdev)
unsigned int cpu = 0;
int ret, i;
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
/* Set the maximum cpufreq when kernel parameter is not given with
'max_freq_<a53|a55|a73>' */
if (board_is_odroidn2()) {
if (!max_freq[0])
max_freq[0] = 1896000; /* defalut freq for A53 is 1.896GHz */
if (!max_freq[1])
max_freq[1] = 1800000; /* defalut freq for A73 is 1.800GHz */
} else if (board_is_odroidc4()) {
if (!max_freq[0])
max_freq[0] = 1800000; /* defalut freq for A55 is 1.800GHz */
}
#endif
for (i = 0; i < MAX_CLUSTERS; i++)
mutex_init(&cluster_lock[i]);