[RFC PATCH 1/2] 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 make this entry
depend on that already.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
 drivers/ram/Kconfig       |  3 ++-
 drivers/ram/sunxi/Kconfig | 13 +++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 drivers/ram/sunxi/Kconfig

diff --git a/drivers/ram/Kconfig b/drivers/ram/Kconfig
index 86857c06272..75ec6fa651b 100644
--- a/drivers/ram/Kconfig
+++ b/drivers/ram/Kconfig
@@ -97,7 +97,8 @@ config IMXRT_SDRAM
 	  This driver is for the sdram memory interface with the SEMC.
 
 source "drivers/ram/aspeed/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/sunxi/Kconfig"
diff --git a/drivers/ram/sunxi/Kconfig b/drivers/ram/sunxi/Kconfig
new file mode 100644
index 00000000000..97e261de542
--- /dev/null
+++ b/drivers/ram/sunxi/Kconfig
@@ -0,0 +1,13 @@
+config DRAM_SUN20I_D1
+	bool "DM DRAM driver support for Allwinner D1"
+	depends on RAM && ARCH_SUNXI
+	default y
+	help
+	  This enables support for DRAM drivers using the driver model
+	  for Allwinner SoCs.
+
+config DRAM_SUN8I_R528
+	bool "DRAM driver support for Allwinner R528/T113s"
+	default y if MACH_SUN8I_R528
+	help
+	  Select this DRAM controller driver for the R528/T113s SoCs.
-- 
2.35.5