ARM: EXYNOS: Initialize the clocks prior to timer initialization
Since the clock initialization should be completed prior to the mct
timer initialization, create a new function 'exynos_init_time' that
first sets up the clock and then invokes the timer initialization
function. The 'init_time' callback in the board files are updated to
invoke this new wrapper function.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index f4e8222..5033179 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -25,6 +25,8 @@
#include <linux/irqdomain.h>
#include <linux/irqchip.h>
#include <linux/of_address.h>
+#include <linux/clocksource.h>
+#include <linux/clk-provider.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/proc-fns.h>
@@ -395,6 +397,20 @@
iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));
}
+void __init exynos_init_time(void)
+{
+ if (of_have_populated_dt()) {
+#ifdef CONFIG_OF
+ of_clk_init(NULL);
+ clocksource_of_init();
+#endif
+ } else {
+ /* todo: remove after migrating legacy E4 platforms to dt */
+ exynos4_clk_init(NULL);
+ mct_init();
+ }
+}
+
void __init exynos4_init_irq(void)
{
unsigned int gic_bank_offset;
diff --git a/arch/arm/mach-exynos/mach-armlex4210.c b/arch/arm/mach-exynos/mach-armlex4210.c
index 376d696..2c23b65 100644
--- a/arch/arm/mach-exynos/mach-armlex4210.c
+++ b/arch/arm/mach-exynos/mach-armlex4210.c
@@ -201,6 +201,6 @@
.map_io = armlex4210_map_io,
.init_machine = armlex4210_machine_init,
.init_late = exynos_init_late,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
index e1f7146..47a2190 100644
--- a/arch/arm/mach-exynos/mach-exynos4-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -158,7 +158,7 @@
.map_io = exynos4_dt_map_io,
.init_machine = exynos4_dt_machine_init,
.init_late = exynos_init_late,
- .init_time = clocksource_of_init,
+ .init_time = exynos_init_time,
.dt_compat = exynos4_dt_compat,
.restart = exynos4_restart,
.reserve = exynos4_reserve,
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 06b2e95..9bae9aa 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -213,7 +213,7 @@
.map_io = exynos5_dt_map_io,
.init_machine = exynos5_dt_machine_init,
.init_late = exynos_init_late,
- .init_time = clocksource_of_init,
+ .init_time = exynos_init_time,
.dt_compat = exynos5_dt_compat,
.restart = exynos5_restart,
.reserve = exynos5_reserve,
diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c
index 8ddbceb5..0555e6d 100644
--- a/arch/arm/mach-exynos/mach-nuri.c
+++ b/arch/arm/mach-exynos/mach-nuri.c
@@ -1379,7 +1379,7 @@
.map_io = nuri_map_io,
.init_machine = nuri_machine_init,
.init_late = exynos_init_late,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.reserve = &nuri_reserve,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 620d60c..e42e61a 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -814,7 +814,7 @@
.map_io = origen_map_io,
.init_machine = origen_machine_init,
.init_late = exynos_init_late,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.reserve = &origen_reserve,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-smdk4x12.c b/arch/arm/mach-exynos/mach-smdk4x12.c
index 63ee1b1..184faa3 100644
--- a/arch/arm/mach-exynos/mach-smdk4x12.c
+++ b/arch/arm/mach-exynos/mach-smdk4x12.c
@@ -375,7 +375,7 @@
.init_irq = exynos4_init_irq,
.map_io = smdk4x12_map_io,
.init_machine = smdk4x12_machine_init,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.restart = exynos4_restart,
.reserve = &smdk4x12_reserve,
MACHINE_END
@@ -389,7 +389,7 @@
.map_io = smdk4x12_map_io,
.init_machine = smdk4x12_machine_init,
.init_late = exynos_init_late,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.restart = exynos4_restart,
.reserve = &smdk4x12_reserve,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-smdkv310.c b/arch/arm/mach-exynos/mach-smdkv310.c
index 51fa235..4bf2198 100644
--- a/arch/arm/mach-exynos/mach-smdkv310.c
+++ b/arch/arm/mach-exynos/mach-smdkv310.c
@@ -422,7 +422,7 @@
.init_irq = exynos4_init_irq,
.map_io = smdkv310_map_io,
.init_machine = smdkv310_machine_init,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END
@@ -435,7 +435,7 @@
.map_io = smdkv310_map_io,
.init_machine = smdkv310_machine_init,
.init_late = exynos_init_late,
- .init_time = mct_init,
+ .init_time = exynos_init_time,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END