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-rw-r--r--drivers/cpufreq/exynos-cpufreq.c19
-rw-r--r--drivers/cpufreq/exynos-cpufreq.h8
-rw-r--r--drivers/cpufreq/exynos4x12-cpufreq.c11
3 files changed, 26 insertions, 12 deletions
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index f99cfe24e7bc..e8a4a7ed38c1 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -17,6 +17,7 @@
#include <linux/regulator/consumer.h>
#include <linux/cpufreq.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
#include <plat/cpu.h>
@@ -163,14 +164,22 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
if (!exynos_info)
return -ENOMEM;
- if (soc_is_exynos4210())
+ if (of_machine_is_compatible("samsung,exynos4210")) {
+ exynos_info->type = EXYNOS_SOC_4210;
ret = exynos4210_cpufreq_init(exynos_info);
- else if (soc_is_exynos4212() || soc_is_exynos4412())
+ } else if (of_machine_is_compatible("samsung,exynos4212")) {
+ exynos_info->type = EXYNOS_SOC_4212;
ret = exynos4x12_cpufreq_init(exynos_info);
- else if (soc_is_exynos5250())
+ } else if (of_machine_is_compatible("samsung,exynos4412")) {
+ exynos_info->type = EXYNOS_SOC_4412;
+ ret = exynos4x12_cpufreq_init(exynos_info);
+ } else if (of_machine_is_compatible("samsung,exynos5250")) {
+ exynos_info->type = EXYNOS_SOC_5250;
ret = exynos5250_cpufreq_init(exynos_info);
- else
- return 0;
+ } else {
+ pr_err("%s: Unknown SoC type\n", __func__);
+ return -ENODEV;
+ }
if (ret)
goto err_vdd_arm;
diff --git a/drivers/cpufreq/exynos-cpufreq.h b/drivers/cpufreq/exynos-cpufreq.h
index 3ddade8a5125..f189547bb447 100644
--- a/drivers/cpufreq/exynos-cpufreq.h
+++ b/drivers/cpufreq/exynos-cpufreq.h
@@ -17,6 +17,13 @@ enum cpufreq_level_index {
L20,
};
+enum exynos_soc_type {
+ EXYNOS_SOC_4210,
+ EXYNOS_SOC_4212,
+ EXYNOS_SOC_4412,
+ EXYNOS_SOC_5250,
+};
+
#define APLL_FREQ(f, a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, m, p, s) \
{ \
.freq = (f) * 1000, \
@@ -34,6 +41,7 @@ struct apll_freq {
};
struct exynos_dvfs_info {
+ enum exynos_soc_type type;
unsigned long mpll_freq_khz;
unsigned int pll_safe_idx;
struct clk *cpu_clk;
diff --git a/drivers/cpufreq/exynos4x12-cpufreq.c b/drivers/cpufreq/exynos4x12-cpufreq.c
index 466c76ad335b..63a3907ce578 100644
--- a/drivers/cpufreq/exynos4x12-cpufreq.c
+++ b/drivers/cpufreq/exynos4x12-cpufreq.c
@@ -100,7 +100,6 @@ static struct apll_freq apll_freq_4412[] = {
static void exynos4x12_set_clkdiv(unsigned int div_index)
{
unsigned int tmp;
- unsigned int stat_cpu1;
/* Change Divider - CPU0 */
@@ -115,13 +114,11 @@ static void exynos4x12_set_clkdiv(unsigned int div_index)
tmp = apll_freq_4x12[div_index].clk_div_cpu1;
__raw_writel(tmp, EXYNOS4_CLKDIV_CPU1);
- if (soc_is_exynos4212())
- stat_cpu1 = 0x11;
- else
- stat_cpu1 = 0x111;
- while (__raw_readl(EXYNOS4_CLKDIV_STATCPU1) & stat_cpu1)
+ do {
cpu_relax();
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STATCPU1);
+ } while (tmp != 0x0);
}
static void exynos4x12_set_apll(unsigned int index)
@@ -184,7 +181,7 @@ int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info)
if (IS_ERR(mout_apll))
goto err_mout_apll;
- if (soc_is_exynos4212())
+ if (info->type == EXYNOS_SOC_4212)
apll_freq_4x12 = apll_freq_4212;
else
apll_freq_4x12 = apll_freq_4412;