ram: renesas: Add Renesas R-Car Gen4 DBSC5 driver
Add Renesas R-Car Gen4 DBSC5 DRAM controller driver. This driver is currently
capable of bringing LPDDR5 DRAM on Renesas R-Car V4H Whitehawk board. Further
boards can be supported by supplying board specific DRAM configuration data
via dbsc5_get_board_data(). Support for R-Car V4M is not implemented, however
the driver is already mostly prepared to support this SoC.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/drivers/ram/renesas/Kconfig b/drivers/ram/renesas/Kconfig
new file mode 100644
index 0000000..6a1ef2a
--- /dev/null
+++ b/drivers/ram/renesas/Kconfig
@@ -0,0 +1,7 @@
+config RAM_RENESAS_DBSC5
+ bool "Renesas R-Car V4H/V4M DBSC5 controller driver"
+ depends on SPL && RAM && (R8A779G0 || R8A779H0)
+ default n
+ help
+ Enable this to support the DBSC5 DRAM controller initialization
+ on Renesas R8A779G0/R8A779H0 SoCs.