[U-Boot] [PATCH 6/8] sunxi: add support for DDR2 DRAM for DesignWare-like DRAM controller

[Icenowy Zheng]

The DesignWare-like DRAM controllers in Allwinner chips have DDR2
DRAM support, add support for it in the driver.

No real DDR2 chip info is added in this commit.

Signed-off-by: Icenowy Zheng <icenowy at aosc.xyz>
---
 arch/arm/mach-sunxi/dram_sunxi_dw.c | 2 ++
 board/sunxi/Kconfig                 | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/arch/arm/mach-sunxi/dram_sunxi_dw.c b/arch/arm/mach-sunxi/dram_sunxi_dw.c
index 401f6a4624..e9dafb0527 100644
--- a/arch/arm/mach-sunxi/dram_sunxi_dw.c
+++ b/arch/arm/mach-sunxi/dram_sunxi_dw.c
@@ -261,6 +261,8 @@ static void mctl_set_cr(struct dram_para *para)
 	writel(MCTL_CR_BL8 | MCTL_CR_2T | MCTL_CR_INTERLEAVED |
 #if defined CONFIG_SUNXI_DRAM_DDR3
 	       MCTL_CR_DDR3 |
+#elif defined CONFIG_SUNXI_DRAM_DDR2
+	       MCTL_CR_DDR2 |
 #else
 #error Unsupported DRAM type!
 #endif
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 7e03ee8b36..b785de7f0e 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -196,6 +196,9 @@ if SUNXI_DRAM_DW
 config SUNXI_DRAM_DDR3
 	bool
 
+config SUNXI_DRAM_DDR2
+	bool
+
 choice
 	prompt "DRAM Type and Timing"
 	default SUNXI_DRAM_DDR3_1333
-- 
2.12.0