[U-Boot] [PATCH] ARM: imx6: Disable DDR DRAM calibration DHCOM i.MX6 PDK

Marek Vasut marex at denx.de
Mon Dec 11 15:19:33 UTC 2017


The DDR DRAM calibration doesn't work on T-topology sometimes, so disable it.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Stefano Babic <sbabic at denx.de>
---
 board/dhelectronics/dh_imx6/dh_imx6_spl.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/board/dhelectronics/dh_imx6/dh_imx6_spl.c b/board/dhelectronics/dh_imx6/dh_imx6_spl.c
index bb98f39f02..57ae7f15ce 100644
--- a/board/dhelectronics/dh_imx6/dh_imx6_spl.c
+++ b/board/dhelectronics/dh_imx6/dh_imx6_spl.c
@@ -387,10 +387,6 @@ void board_init_f(ulong dummy)
 				  &dhcom6sdl_grp_ioregs);
 	mx6_dram_cfg(&dhcom_ddr_info, &dhcom_mmdc_calib, &dhcom_mem_ddr);
 
-	/* Perform DDR DRAM calibration */
-	udelay(100);
-	mmdc_do_dqs_calibration(&dhcom_ddr_info);
-
 	/* Clear the BSS. */
 	memset(__bss_start, 0, __bss_end - __bss_start);
 
-- 
2.15.0



More information about the U-Boot mailing list