ram: k3-ddrss: Introduce top-level CONFIG_K3_DDRSS

Create a new CONFIG_K3_DDRSS option to select the common parts of the
k3-ddrss driver. Also introduce a choice that depends on the top level
option to select CONFIG_K3_J721E_DDRSS for j721e support, and update
corresponding Kconfig as required.
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>

board/ti/j721e/Kconfig

@@ -23,7 +23,7 @@ config TARGET_J721E_R5_EVM
 	select K3_LOAD_SYSFW
 	select RAM
 	select SPL_RAM
-	select K3_J721E_DDRSS
+	select K3_DDRSS
 	imply SYS_K3_SPL_ATF
 	imply TI_I2C_BOARD_DETECT
 
@@ -43,7 +43,7 @@ config TARGET_J7200_R5_EVM
 	select K3_LOAD_SYSFW
 	select RAM
 	select SPL_RAM
-	select K3_J721E_DDRSS
+	select K3_DDRSS
 	imply SYS_K3_SPL_ATF
 	imply TI_I2C_BOARD_DETECT
 

drivers/ram/Kconfig

@@ -54,9 +54,16 @@ config K3_AM654_DDRSS
 	  config add support for the initialization of the external
 	  SDRAM devices connected to DDR subsystem.
 
+config K3_DDRSS
+	bool "Enable K3 DDRSS support"
+	depends on RAM
+
+choice
+	depends on K3_DDRSS
+	prompt "K3 DDRSS Arch Support"
+
 config K3_J721E_DDRSS
 	bool "Enable J721E DDRSS support"
-	depends on RAM
 	help
 	  The J721E DDR subsystem comprises DDR controller, DDR PHY and
 	  wrapper logic to integrate these blocks in the device. The DDR
@@ -65,6 +72,8 @@ config K3_J721E_DDRSS
 	  Enabling this config adds support for the DDR memory controller
 	  on J721E family of SoCs.
 
+endchoice
+
 config IMXRT_SDRAM
 	bool "Enable i.MXRT SDRAM support"
 	depends on RAM

drivers/ram/Makefile

@@ -15,7 +15,7 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
 obj-$(CONFIG_K3_AM654_DDRSS) += k3-am654-ddrss.o
 obj-$(CONFIG_ARCH_MEDIATEK) += mediatek/
 obj-$(CONFIG_ARCH_ASPEED) += aspeed/
-obj-$(CONFIG_K3_J721E_DDRSS) += k3-ddrss/
+obj-$(CONFIG_K3_DDRSS) += k3-ddrss/
 
 obj-$(CONFIG_IMXRT_SDRAM) += imxrt_sdram.o