X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=board%2Ffreescale%2Ft104xrdb%2Fddr.c;h=2b1b28da8856d3f266a28838468533144b263ab0;hb=83d290c56fab2d38cd1ab4c4cc7099559c1d5046;hp=e1148e568e8ee66a9ae36adf0764083a81621a84;hpb=b79dadf846e5e140e261bbfa4decd024357702d7;p=platform%2Fkernel%2Fu-boot.git

diff --git a/board/freescale/t104xrdb/ddr.c b/board/freescale/t104xrdb/ddr.c
index e1148e5..2b1b28d 100644
--- a/board/freescale/t104xrdb/ddr.c
+++ b/board/freescale/t104xrdb/ddr.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
@@ -75,7 +74,13 @@ found:
 	 * Factors to consider for half-strength driver enable:
 	 *	- number of DIMMs installed
 	 */
+#ifdef CONFIG_SYS_FSL_DDR4
+	popts->half_strength_driver_enable = 1;
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x59;
+#else
 	popts->half_strength_driver_enable = 0;
+#endif
 	/*
 	 * Write leveling override
 	 */
@@ -91,8 +96,14 @@ found:
 	popts->zq_en = 1;
 
 	/* DHC_EN =1, ODT = 75 Ohm */
+#ifdef CONFIG_SYS_FSL_DDR4
+	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_120OHM);
+	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_120OHM) |
+		DDR_CDR2_VREF_OVRD(70);       /* Vref = 70% */
+#else
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+#endif
 }
 
 #if defined(CONFIG_DEEP_SLEEP)
@@ -108,25 +119,24 @@ void board_mem_sleep_setup(void)
 }
 #endif
 
-phys_size_t initdram(int board_type)
+int dram_init(void)
 {
 	phys_size_t dram_size;
 
 #if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
 	puts("Initializing....using SPD\n");
-
 	dram_size = fsl_ddr_sdram();
-
-	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
-	dram_size *= 0x100000;
-
 #else
 	dram_size =  fsl_ddr_sdram_size();
 #endif
+	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+	dram_size *= 0x100000;
 
 #if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD)
 	fsl_dp_resume();
 #endif
 
-	return dram_size;
+	gd->ram_size = dram_size;
+
+	return 0;
 }