rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/arch/arm/mach-at91/Kconfig
..
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@@ -107,6 +107,31 @@
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 	    AT91SAM9X35
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 	    AT91SAM9XE
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+comment "Clocksource driver selection"
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+
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+config ATMEL_CLOCKSOURCE_PIT
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+	bool "Periodic Interval Timer (PIT) support"
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+	depends on SOC_AT91SAM9 || SOC_SAMA5
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+	default SOC_AT91SAM9 || SOC_SAMA5
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+	select ATMEL_PIT
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+	help
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+	  Select this to get a clocksource based on the Atmel Periodic Interval
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+	  Timer. It has a relatively low resolution and the TC Block clocksource
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+	  should be preferred.
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+
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+config ATMEL_CLOCKSOURCE_TCB
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+	bool "Timer Counter Blocks (TCB) support"
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+	depends on SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5 || COMPILE_TEST
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+	default SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5
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+	depends on !ATMEL_TCLIB
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+	select ATMEL_ARM_TCB_CLKSRC
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+	help
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+	  Select this to get a high precision clocksource based on a
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+	  TC block with a 5+ MHz base clock rate.
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+	  On platforms with 16-bit counters, two timer channels are combined
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+	  to make a single 32-bit timer.
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+	  It can also be used as a clock event device supporting oneshot mode.
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+
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 config HAVE_AT91_UTMI
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 	bool
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