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ARM: vexpress: use new init_early for clock tree and sched_clock init 

Initialize the clock tree and our sched_clock() early.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-01-11 13:07:52 +00:00
parent 631e55f966
commit 493a451bb5
3 changed files with 13 additions and 4 deletions
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1
arch/arm/mach-vexpress/core.h
View File

@ -21,4 +21,5 @@ struct amba_device name##_device = { \
struct map_desc;
void v2m_map_io(struct map_desc *tile, size_t num);
void v2m_init_early(void);
extern struct sys_timer v2m_timer;

10
arch/arm/mach-vexpress/ct-ca9x4.c
View File

@ -180,6 +180,13 @@ static struct platform_device pmu_device = {
.resource = pmu_resources,
};
static void __init ct_ca9x4_init_early(void)
{
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
v2m_init_early();
}
static void __init ct_ca9x4_init(void)
{
int i;
@ -194,8 +201,6 @@ static void __init ct_ca9x4_init(void)
l2x0_init(l2x0_base, 0x00400000, 0xfe0fffff);
#endif
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
for (i = 0; i < ARRAY_SIZE(ct_ca9x4_amba_devs); i++)
amba_device_register(ct_ca9x4_amba_devs[i], &iomem_resource);
@ -206,6 +211,7 @@ MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
.boot_params = PHYS_OFFSET + 0x00000100,
.map_io = ct_ca9x4_map_io,
.init_irq = ct_ca9x4_init_irq,
.init_early = ct_ca9x4_init_early,
#if 0
.timer = &ct_ca9x4_timer,
#else

6
arch/arm/mach-vexpress/v2m.c
View File

@ -49,13 +49,15 @@ void __init v2m_map_io(struct map_desc *tile, size_t num)
iotable_init(tile, num);
}
void __init v2m_init_early(void)
{
versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
}
static void __init v2m_timer_init(void)
{
u32 scctrl;
versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
/* Select 1MHz TIMCLK as the reference clock for SP804 timers */
scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;