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=6a9ee4b...
Signed-off-by: Lokesh Vutla lokeshvutla@ti.com --- board/ti/am43xx/board.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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 @@ const struct ctrl_ioregs ioregs_ddr3 = { .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 = {