ARM: AM43xx: Enable DDR dynamic IO power down for DDR3
This patch enables dynamically powering down the
IO receiver when not performing a read on DDR3 board.
This optimizes both active and standby power consumption.
This is derived from a patch that is done on AM335x[1]
[1] http://arago-project.org/git/projects/?p=u-boot-am33x.git;a=commit;h=6a9ee4bc72ece53fabf01825605fba3d71d5feb2
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index ed87cd9..4e6846a 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -188,7 +188,7 @@
.dt1ioctl = DDR3_DATA0_IOCTRL_VALUE,
.dt2ioctrl = DDR3_DATA0_IOCTRL_VALUE,
.dt3ioctrl = DDR3_DATA0_IOCTRL_VALUE,
- .emif_sdram_config_ext = 0x0043,
+ .emif_sdram_config_ext = 0x0143,
};
const struct emif_regs ddr3_emif_regs_400Mhz = {