clk: Add directory for STM32 clock drivers

Add a directory in drivers/clk to regroup the clock drivers for all
STM32 Soc with CONFIG_ARCH_STM32 (MCUs with cortex M) or
CONFIG_ARCH_STM32MP (MPUs with cortex A).

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Grzegorz Szymaszek <gszymaszek@short.pl>
Acked-by: Sean Anderson <seanga2@gmail.com>
Change-Id: I955af307963f732167396f0157a30cf2fc91f150

MAINTAINERS

@@ -491,7 +491,7 @@ S:	Maintained
 F:	arch/arm/mach-stm32mp/
 F:	doc/board/st/
 F:	drivers/adc/stm32-adc*
-F:	drivers/clk/clk_stm32mp1.c
+F:	drivers/clk/stm32/
 F:	drivers/gpio/stm32_gpio.c
 F:	drivers/hwspinlock/stm32_hwspinlock.c
 F:	drivers/i2c/stm32f7_i2c.c

drivers/clk/Kconfig

@@ -166,22 +166,6 @@ config CLK_SCMI
 	  by a SCMI agent based on SCMI clock protocol communication
 	  with a SCMI server.
 
-config CLK_STM32F
-	bool "Enable clock driver support for STM32F family"
-	depends on CLK && (STM32F7 || STM32F4)
-	default y
-	help
-	  This clock driver adds support for RCC clock management
-	  for STM32F4 and STM32F7 SoCs.
-
-config CLK_STM32MP1
-	bool "Enable RCC clock driver for STM32MP1"
-	depends on ARCH_STM32MP && CLK
-	default y
-	help
-	  Enable the STM32 clock (RCC) driver. Enable support for
-	  manipulating STM32MP1's on-SoC clocks.
-
 config CLK_HSDK
 	bool "Enable cgu clock driver for HSDK boards"
 	depends on CLK && TARGET_HSDK
@@ -251,6 +235,7 @@ source "drivers/clk/owl/Kconfig"
 source "drivers/clk/renesas/Kconfig"
 source "drivers/clk/sunxi/Kconfig"
 source "drivers/clk/sifive/Kconfig"
+source "drivers/clk/stm32/Kconfig"
 source "drivers/clk/tegra/Kconfig"
 source "drivers/clk/ti/Kconfig"
 source "drivers/clk/uniphier/Kconfig"

drivers/clk/Makefile

@@ -23,6 +23,8 @@ obj-$(CONFIG_ARCH_MTMIPS) += mtmips/
 obj-$(CONFIG_ARCH_NPCM) += nuvoton/
 obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
 obj-$(CONFIG_ARCH_SOCFPGA) += altera/
+obj-$(CONFIG_ARCH_STM32) += stm32/
+obj-$(CONFIG_ARCH_STM32MP) += stm32/
 obj-$(CONFIG_ARCH_SUNXI) += sunxi/
 obj-$(CONFIG_CLK_AT91) += at91/
 obj-$(CONFIG_CLK_BCM6345) += clk_bcm6345.o
@@ -39,8 +41,6 @@ obj-$(CONFIG_CLK_OWL) += owl/
 obj-$(CONFIG_CLK_RENESAS) += renesas/
 obj-$(CONFIG_CLK_SCMI) += clk_scmi.o
 obj-$(CONFIG_CLK_SIFIVE) += sifive/
-obj-$(CONFIG_CLK_STM32F) += clk_stm32f.o
-obj-$(CONFIG_CLK_STM32MP1) += clk_stm32mp1.o
 obj-$(CONFIG_CLK_UNIPHIER) += uniphier/
 obj-$(CONFIG_CLK_VERSACLOCK) += clk_versaclock.o
 obj-$(CONFIG_CLK_VERSAL) += clk_versal.o
@@ -53,4 +53,3 @@ obj-$(CONFIG_MACH_PIC32) += clk_pic32.o
 obj-$(CONFIG_SANDBOX_CLK_CCF) += clk_sandbox_ccf.o
 obj-$(CONFIG_SANDBOX) += clk_sandbox.o
 obj-$(CONFIG_SANDBOX) += clk_sandbox_test.o
-obj-$(CONFIG_STM32H7) += clk_stm32h7.o

drivers/clk/stm32/Kconfig

@@ -0,0 +1,23 @@
+config CLK_STM32F
+	bool "Enable clock driver support for STM32F family"
+	depends on CLK && (STM32F7 || STM32F4)
+	default y
+	help
+	  This clock driver adds support for RCC clock management
+	  for STM32F4 and STM32F7 SoCs.
+
+config CLK_STM32H7
+	bool "Enable clock driver support for STM32H7 family"
+	depends on CLK && STM32H7
+	default y
+	help
+	  This clock driver adds support for RCC clock management
+	  for STM32H7 SoCs.
+
+config CLK_STM32MP1
+	bool "Enable RCC clock driver for STM32MP15"
+	depends on ARCH_STM32MP && CLK
+	default y if STM32MP15x
+	help
+	  Enable the STM32 clock (RCC) driver. Enable support for
+	  manipulating STM32MP15's on-SoC clocks.

drivers/clk/stm32/Makefile

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+
+obj-$(CONFIG_CLK_STM32F) += clk-stm32f.o
+obj-$(CONFIG_CLK_STM32H7) += clk-stm32h7.o
+obj-$(CONFIG_CLK_STM32MP1) += clk-stm32mp1.o