From 3d81584d40877f95a381355438e5694253f5fa9b Mon Sep 17 00:00:00 2001 From: Ludwig Zenz Date: Thu, 5 Jul 2018 09:23:46 +0200 Subject: [PATCH] Revert "ARM: imx6: Disable DDR DRAM calibration DHCOM i.MX6 PDK" This reverts commit a637fe6f27fd4c19ef9f43a5f871c244581422ac. The DDR DRAM calibration was enhanced by write leveling correction code. It can be used with T-topology now. Signed-off-by: Ludwig Zenz --- board/dhelectronics/dh_imx6/dh_imx6_spl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/board/dhelectronics/dh_imx6/dh_imx6_spl.c b/board/dhelectronics/dh_imx6/dh_imx6_spl.c index dffe4eb..beda389 100644 --- a/board/dhelectronics/dh_imx6/dh_imx6_spl.c +++ b/board/dhelectronics/dh_imx6/dh_imx6_spl.c @@ -384,6 +384,10 @@ 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);