[PATCH v3 15/24] Kconfig: sunxi: prepare for using drivers/ram/sunxi

[Andre Przywara]

At the moment all Allwinner DRAM initialisation routines are stored in
arch/arm/mach-sunxi, even though those "drivers" are just a giant
collection of writel's, without any architectural dependency.

The R528/T113-s SoC (with ARM cores) and the D1/D1s Soc (with RISC-V
cores) share the same die, so should share the same DRAM init routines as
well.

To prepare for this, add a new sunxi directory inside drivers/ram, and
add some stub entries to prepare for the addition of the share DRAM code
for those SoCs.

The RISC-V D1(s) SoCs will probably use SPL_DM, so for that SoC this
would be the right directory anyway.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
 drivers/ram/Kconfig       | 3 ++-
 drivers/ram/sunxi/Kconfig | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 drivers/ram/sunxi/Kconfig

diff --git a/drivers/ram/Kconfig b/drivers/ram/Kconfig
index bf999645774..5b07e920301 100644
--- a/drivers/ram/Kconfig
+++ b/drivers/ram/Kconfig
@@ -109,8 +109,9 @@ config IMXRT_SDRAM
 
 source "drivers/ram/aspeed/Kconfig"
 source "drivers/ram/cadence/Kconfig"
+source "drivers/ram/octeon/Kconfig"
 source "drivers/ram/rockchip/Kconfig"
 source "drivers/ram/sifive/Kconfig"
 source "drivers/ram/stm32mp1/Kconfig"
-source "drivers/ram/octeon/Kconfig"
 source "drivers/ram/starfive/Kconfig"
+source "drivers/ram/sunxi/Kconfig"
diff --git a/drivers/ram/sunxi/Kconfig b/drivers/ram/sunxi/Kconfig
new file mode 100644
index 00000000000..d7cf84c39a3
--- /dev/null
+++ b/drivers/ram/sunxi/Kconfig
@@ -0,0 +1,6 @@
+config DRAM_SUN20I_D1
+	bool
+	depends on ARCH_SUNXI
+	help
+	  This enables support for the DRAM controller driver covering
+	  the Allwinner D1/R528/T113s SoCs.
-- 
2.25.1