clk: canaan: Add clock driver for Canaan K230

This patch provides basic support for the K230 clock, which covers
all clocks in K230 SoC.

The clock tree of the K230 SoC consists of a 24MHZ external crystal
oscillator, PLLs and an external pulse input for timerX, and their
derived clocks.

Co-developed-by: Troy Mitchell <TroyMitchell988@gmail.com>
Signed-off-by: Troy Mitchell <TroyMitchell988@gmail.com>
Signed-off-by: Xukai Wang <kingxukai@zohomail.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

drivers/clk/Kconfig

@@ -480,6 +480,12 @@ config COMMON_CLK_K210
 	help
 	  Support for the Canaan Kendryte K210 RISC-V SoC clocks.
 
+config COMMON_CLK_K230
+	bool "Clock driver for the Canaan Kendryte K230 SoC"
+	depends on ARCH_CANAAN || COMPILE_TEST
+	help
+	  Support for the Canaan Kendryte K230 RISC-V SoC clocks.
+
 config COMMON_CLK_SP7021
 	tristate "Clock driver for Sunplus SP7021 SoC"
 	depends on SOC_SP7021 || COMPILE_TEST

drivers/clk/Makefile

@@ -65,6 +65,7 @@ obj-$(CONFIG_COMMON_CLK_GEMINI)		+= clk-gemini.o
 obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-highbank.o
 obj-$(CONFIG_CLK_HSDK)			+= clk-hsdk-pll.o
 obj-$(CONFIG_COMMON_CLK_K210)		+= clk-k210.o
+obj-$(CONFIG_COMMON_CLK_K230)		+= clk-k230.o
 obj-$(CONFIG_LMK04832)			+= clk-lmk04832.o
 obj-$(CONFIG_COMMON_CLK_LAN966X)	+= clk-lan966x.o
 obj-$(CONFIG_COMMON_CLK_LOCHNAGAR)	+= clk-lochnagar.o