clocksource/drivers/timer-ti-dm: Make timer selectable for ARCH_K3

Let's make timer-ti-dm selectable for ARCH_K3, and add a separate option
for OMAP_DM_SYSTIMER as there should be no need for it on ARCH_K3.

For older TI SoCs, we are already selecting OMAP_DM_TIMER in
arch/arm/mach-omap*/Kconfig. For mach-omap2, we need to now also select
OMAP_DM_SYSTIMER.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220408101715.43697-3-tony@atomide.comSigned-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

arch/arm/mach-omap2/Kconfig

@@ -105,6 +105,7 @@ config ARCH_OMAP2PLUS
 	select MACH_OMAP_GENERIC
 	select MEMORY
 	select MFD_SYSCON
+	select OMAP_DM_SYSTIMER
 	select OMAP_DM_TIMER
 	select OMAP_GPMC
 	select PINCTRL
@@ -160,6 +161,7 @@ config SOC_OMAP2420
 	bool "OMAP2420 support"
 	depends on ARCH_OMAP2
 	default y
+	select OMAP_DM_SYSTIMER
 	select OMAP_DM_TIMER
 	select SOC_HAS_OMAP2_SDRC
 

drivers/clocksource/Kconfig

@@ -22,7 +22,7 @@ config CLKEVT_I8253
 config I8253_LOCK
 	bool
 
-config OMAP_DM_TIMER
+config OMAP_DM_SYSTIMER
 	bool
 	select TIMER_OF
 
@@ -56,6 +56,12 @@ config DIGICOLOR_TIMER
 	help
 	  Enables the support for the digicolor timer driver.
 
+config OMAP_DM_TIMER
+	tristate "OMAP dual-mode timer driver" if ARCH_K3 || COMPILE_TEST
+	select TIMER_OF
+	help
+	  Enables the support for the TI dual-mode timer driver.
+
 config DW_APB_TIMER
 	bool "DW APB timer driver" if COMPILE_TEST
 	help

drivers/clocksource/Makefile

@@ -18,7 +18,7 @@ obj-$(CONFIG_CLKSRC_MMIO)	+= mmio.o
 obj-$(CONFIG_DAVINCI_TIMER)	+= timer-davinci.o
 obj-$(CONFIG_DIGICOLOR_TIMER)	+= timer-digicolor.o
 obj-$(CONFIG_OMAP_DM_TIMER)	+= timer-ti-dm.o
-obj-$(CONFIG_OMAP_DM_TIMER)	+= timer-ti-dm-systimer.o
+obj-$(CONFIG_OMAP_DM_SYSTIMER)	+= timer-ti-dm-systimer.o
 obj-$(CONFIG_DW_APB_TIMER)	+= dw_apb_timer.o
 obj-$(CONFIG_DW_APB_TIMER_OF)	+= dw_apb_timer_of.o
 obj-$(CONFIG_FTTMR010_TIMER)	+= timer-fttmr010.o