clk: imx8qxp: Support building i.MX8QXP clock driver as module

Change configuration to "tristate", add module author, description and
license to support building i.MX8QXP clock drivers as module.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/clk/imx/Kconfig

@@ -5,8 +5,9 @@ config MXC_CLK
 	depends on ARCH_MXC || COMPILE_TEST
 
 config MXC_CLK_SCU
-	bool
+	tristate "IMX SCU clock"
-	depends on IMX_SCU
+	depends on ARCH_MXC || COMPILE_TEST
+	depends on IMX_SCU && HAVE_ARM_SMCCC
 
 config CLK_IMX1
 	def_bool SOC_IMX1
@@ -97,8 +98,9 @@ config CLK_IMX8MQ
 	    Build the driver for i.MX8MQ CCM Clock Driver
 
 config CLK_IMX8QXP
-	bool "IMX8QXP SCU Clock"
+	tristate "IMX8QXP SCU Clock"
-	depends on ARCH_MXC && IMX_SCU && ARM64
+	depends on (ARCH_MXC && ARM64) || COMPILE_TEST
+	depends on IMX_SCU && HAVE_ARM_SMCCC
 	select MXC_CLK_SCU
 	help
 	  Build the driver for IMX8QXP SCU based clocks.

drivers/clk/imx/Makefile

@@ -21,15 +21,14 @@ mxc-clk-objs += clk-pll14xx.o
 mxc-clk-objs += clk-sscg-pll.o
 obj-$(CONFIG_MXC_CLK) += mxc-clk.o
 
-obj-$(CONFIG_MXC_CLK_SCU) += \
-	clk-scu.o \
-	clk-lpcg-scu.o
-
 obj-$(CONFIG_CLK_IMX8MM) += clk-imx8mm.o
 obj-$(CONFIG_CLK_IMX8MN) += clk-imx8mn.o
 obj-$(CONFIG_CLK_IMX8MP) += clk-imx8mp.o
 obj-$(CONFIG_CLK_IMX8MQ) += clk-imx8mq.o
-obj-$(CONFIG_CLK_IMX8QXP) += clk-imx8qxp.o clk-imx8qxp-lpcg.o
+
+obj-$(CONFIG_MXC_CLK_SCU) += clk-imx-scu.o clk-imx-lpcg-scu.o
+clk-imx-scu-$(CONFIG_CLK_IMX8QXP) += clk-scu.o clk-imx8qxp.o
+clk-imx-lpcg-scu-$(CONFIG_CLK_IMX8QXP) += clk-lpcg-scu.o clk-imx8qxp-lpcg.o
 
 obj-$(CONFIG_CLK_IMX1)   += clk-imx1.o
 obj-$(CONFIG_CLK_IMX21)  += clk-imx21.o

drivers/clk/imx/clk-imx8qxp-lpcg.c

@@ -232,3 +232,7 @@ static struct platform_driver imx8qxp_lpcg_clk_driver = {
 };
 
 builtin_platform_driver(imx8qxp_lpcg_clk_driver);
+
+MODULE_AUTHOR("Aisheng Dong <aisheng.dong@nxp.com>");
+MODULE_DESCRIPTION("NXP i.MX8QXP LPCG clock driver");
+MODULE_LICENSE("GPL v2");

drivers/clk/imx/clk-imx8qxp.c

@@ -152,3 +152,7 @@ static struct platform_driver imx8qxp_clk_driver = {
 	.probe = imx8qxp_clk_probe,
 };
 builtin_platform_driver(imx8qxp_clk_driver);
+
+MODULE_AUTHOR("Aisheng Dong <aisheng.dong@nxp.com>");
+MODULE_DESCRIPTION("NXP i.MX8QXP clock driver");
+MODULE_LICENSE("GPL v2");