ARM: shmobile: Add shared shmobile_init_delay()
Introduce shmobile_init_delay() that gets CPU specific parameters from DT and sets up the early delay from there. This allows us to both remove frequency information from the C code and consolidate existing code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
parent
ce4b6a04c4
commit
c39dae380b
|
@ -4,6 +4,7 @@
|
|||
extern void shmobile_earlytimer_init(void);
|
||||
extern void shmobile_setup_delay(unsigned int max_cpu_core_mhz,
|
||||
unsigned int mult, unsigned int div);
|
||||
extern void shmobile_init_delay(void);
|
||||
struct twd_local_timer;
|
||||
extern void shmobile_setup_console(void);
|
||||
extern void shmobile_boot_vector(void);
|
||||
|
|
|
@ -21,6 +21,7 @@
|
|||
#include <linux/platform_device.h>
|
||||
#include <linux/clocksource.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/of_address.h>
|
||||
|
||||
void __init shmobile_setup_delay(unsigned int max_cpu_core_mhz,
|
||||
unsigned int mult, unsigned int div)
|
||||
|
@ -39,6 +40,33 @@ void __init shmobile_setup_delay(unsigned int max_cpu_core_mhz,
|
|||
preset_lpj = max_cpu_core_mhz * value;
|
||||
}
|
||||
|
||||
void __init shmobile_init_delay(void)
|
||||
{
|
||||
struct device_node *np, *parent;
|
||||
u32 max_freq, freq;
|
||||
|
||||
max_freq = 0;
|
||||
|
||||
parent = of_find_node_by_path("/cpus");
|
||||
if (parent) {
|
||||
for_each_child_of_node(parent, np) {
|
||||
if (!of_property_read_u32(np, "clock-frequency", &freq))
|
||||
max_freq = max(max_freq, freq);
|
||||
}
|
||||
of_node_put(parent);
|
||||
}
|
||||
|
||||
if (max_freq) {
|
||||
if (of_find_compatible_node(NULL, NULL, "arm,cortex-a8"))
|
||||
shmobile_setup_delay(max_freq, 1, 3);
|
||||
else if (of_find_compatible_node(NULL, NULL, "arm,cortex-a9"))
|
||||
shmobile_setup_delay(max_freq, 1, 3);
|
||||
else if (of_find_compatible_node(NULL, NULL, "arm,cortex-a15"))
|
||||
if (!IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
|
||||
shmobile_setup_delay(max_freq, 2, 4);
|
||||
}
|
||||
}
|
||||
|
||||
static void __init shmobile_late_time_init(void)
|
||||
{
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue