ARM: integrator: convert to common clock
This converts the Integrator platform to use common clock
and the ICST driver. Since from this point not all ARM
reference platforms use the clock, we define
CONFIG_PLAT_VERSATILE_CLOCK and select it for all platforms
except the Integrator.
Open issue: I could not use the .init_early() field of the
machine descriptor to initialize the clocks, but had to
move them to .init_irq(), so presumably .init_early() is
so early that common clock is not up, and .init_machine()
is too late since it's needed for the clockevent/clocksource
initialization. Any suggestions on how to solve this is
very welcome.
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: use 'select' instead of versatile Kconfig]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c598537..6f8cf40 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -254,8 +254,8 @@
bool "ARM Ltd. Integrator family"
select ARM_AMBA
select ARCH_HAS_CPUFREQ
- select CLKDEV_LOOKUP
- select HAVE_MACH_CLKDEV
+ select COMMON_CLK
+ select CLK_VERSATILE
select HAVE_TCM
select ICST
select GENERIC_CLOCKEVENTS
@@ -277,6 +277,7 @@
select GENERIC_CLOCKEVENTS
select ARCH_WANT_OPTIONAL_GPIOLIB
select PLAT_VERSATILE
+ select PLAT_VERSATILE_CLOCK
select PLAT_VERSATILE_CLCD
select ARM_TIMER_SP804
select GPIO_PL061 if GPIOLIB
@@ -295,6 +296,7 @@
select ARCH_WANT_OPTIONAL_GPIOLIB
select NEED_MACH_IO_H if PCI
select PLAT_VERSATILE
+ select PLAT_VERSATILE_CLOCK
select PLAT_VERSATILE_CLCD
select PLAT_VERSATILE_FPGA_IRQ
select ARM_TIMER_SP804
@@ -314,6 +316,7 @@
select ICST
select NO_IOPORT
select PLAT_VERSATILE
+ select PLAT_VERSATILE_CLOCK
select PLAT_VERSATILE_CLCD
help
This enables support for the ARM Ltd Versatile Express boards.