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ARM: imx: vining2000: Enable DDR DRAM calibration

Enable DRAM calibration in SPL to improve behavior of the board
in edge conditions of the thermal envelope of the board and make
it even more stable.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Silvio Fricke <silvio.fricke@softing.com>
Cc: Stefano Babic <sbabic@denx.de>
Marek Vasut 4 년 전
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5b97abab55
2개의 변경된 파일6개의 추가작업 그리고 0개의 파일을 삭제
  1. 5 0
      board/softing/vining_2000/vining_2000.c
  2. 1 0
      configs/vining_2000_defconfig

+ 5 - 0
board/softing/vining_2000/vining_2000.c

@@ -587,6 +587,11 @@ static void vining2000_spl_dram_init(void)
 
 	mx6sx_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
 	mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr);
+
+	/* Perform DDR DRAM calibration */
+	udelay(100);
+	mmdc_do_write_level_calibration(&sysinfo);
+	mmdc_do_dqs_calibration(&sysinfo);
 }
 
 void board_init_f(ulong dummy)

+ 1 - 0
configs/vining_2000_defconfig

@@ -5,6 +5,7 @@ CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_MX6_DDRCAL=y
 CONFIG_TARGET_SOFTING_VINING_2000=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y