On 13/03/17 17:50, Icenowy Zheng wrote:
The DesignWare-like DRAM code used to set the controller defaultly to single rank mode, which makes it not able to detect the second rank.
Set the default value to dual rank, thus the rank detection code can work and finally the rank setting will be the correct value.
This change is tested on a Orange Pi One (H3, single rank), a Pine64+ 2GiB version (A64, single rank) , a Pinebook early prototype with DDR3 (A64, dual rank) and a SoPine with some LPDDR3 patch (A64, dual CS pins on one chip).
Signed-off-by: Icenowy Zheng icenowy@aosc.xyz
Reviewed-by: Andre Przywara andre.przywara@arm.com
Cheers, Andre.
arch/arm/mach-sunxi/dram_sunxi_dw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-sunxi/dram_sunxi_dw.c b/arch/arm/mach-sunxi/dram_sunxi_dw.c index 3629d34f71..e1ea6845df 100644 --- a/arch/arm/mach-sunxi/dram_sunxi_dw.c +++ b/arch/arm/mach-sunxi/dram_sunxi_dw.c @@ -543,7 +543,7 @@ unsigned long sunxi_dram_init(void) (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
struct dram_para para = {
.dual_rank = 0,
.dual_rank = 1,