clk: Add Sunplus SP7021 clock driver

Add clock driver for Sunplus SP7021 SoC.

Signed-off-by: Qin Jian <qinjian@cqplus1.com>
Link: https://lore.kernel.org/r/20221219015130.42621-1-qinjian@cqplus1.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

MAINTAINERS

@@ -2849,6 +2849,7 @@ F:	Documentation/devicetree/bindings/reset/sunplus,reset.yaml
 F:	arch/arm/boot/dts/sunplus-sp7021*.dts*
 F:	arch/arm/configs/sp7021_*defconfig
 F:	arch/arm/mach-sunplus/
+F:	drivers/clk/clk-sp7021.c
 F:	drivers/irqchip/irq-sp7021-intc.c
 F:	drivers/reset/reset-sunplus.c
 F:	include/dt-bindings/clock/sunplus,sp7021-clkc.h

drivers/clk/Kconfig

@@ -436,6 +436,16 @@ config COMMON_CLK_K210
 	help
 	  Support for the Canaan Kendryte K210 RISC-V SoC clocks.
 
+config COMMON_CLK_SP7021
+	tristate "Clock driver for Sunplus SP7021 SoC"
+	depends on SOC_SP7021 || COMPILE_TEST
+	default SOC_SP7021
+	help
+	  This driver supports the Sunplus SP7021 SoC clocks.
+	  It implements SP7021 PLLs/gate.
+	  Not all features of the PLL are currently supported
+	  by the driver.
+
 source "drivers/clk/actions/Kconfig"
 source "drivers/clk/analogbits/Kconfig"
 source "drivers/clk/baikal-t1/Kconfig"

drivers/clk/Makefile

@@ -65,6 +65,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351)		+= clk-si5351.o
 obj-$(CONFIG_COMMON_CLK_SI514)		+= clk-si514.o
 obj-$(CONFIG_COMMON_CLK_SI544)		+= clk-si544.o
 obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
+obj-$(CONFIG_COMMON_CLK_SP7021)		+= clk-sp7021.o
 obj-$(CONFIG_COMMON_CLK_STM32F)		+= clk-stm32f4.o
 obj-$(CONFIG_COMMON_CLK_STM32H7)	+= clk-stm32h7.o
 obj-$(CONFIG_COMMON_CLK_STM32MP157)	+= clk-stm32mp1.o