[U-Boot] [PATCH v2 10/12] sunxi: add LPDDR3 DRAM type support for DesignWare-like DRAM controller

[Icenowy Zheng]

From: Icenowy Zheng <icenowy at aosc.xyz>

Some A64 boards (SoPine and Pinebook production batch) use LPDDR3 DRAM
chips.

Add support for LPDDR3 DRAM in the DesignWare-like DRAM controller code.

Real LPDDR3 chips' support is not added yet in this commit.

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

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index ca6417388a..2761915638 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -226,6 +226,9 @@ config SUNXI_DRAM_DDR3
 config SUNXI_DRAM_DDR2
 	bool
 
+config SUNXI_DRAM_LPDDR3
+	bool
+
 choice
 	prompt "DRAM Type and Timing"
 	default SUNXI_DRAM_DDR3_1333 if !MACH_SUN8I_V3S
diff --git a/arch/arm/mach-sunxi/dram_sunxi_dw.c b/arch/arm/mach-sunxi/dram_sunxi_dw.c
index 20c3055b7a..78b4ffb9c3 100644
--- a/arch/arm/mach-sunxi/dram_sunxi_dw.c
+++ b/arch/arm/mach-sunxi/dram_sunxi_dw.c
@@ -342,6 +342,8 @@ static void mctl_set_cr(uint16_t socid, struct dram_para *para)
 	       MCTL_CR_DDR3 | MCTL_CR_2T |
 #elif defined CONFIG_SUNXI_DRAM_DDR2
 	       MCTL_CR_DDR2 | MCTL_CR_2T |
+#elif defined CONFIG_SUNXI_DRAM_LPDDR3
+	       MCTL_CR_LPDDR3 | MCTL_CR_1T |
 #else
 #error Unsupported DRAM type!
 #endif
-- 
2.12.2