1 files changed, 102 insertions, 0 deletions
diff --git a/board/freescale/ls1088a/ddr.c b/board/freescale/ls1088a/ddr.c
new file mode 100644
index 0000000..0ecfd65
--- /dev/null
+++ b/board/freescale/ls1088a/ddr.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
+#include <asm/arch/soc.h>
+#include <asm/arch/clock.h>
+#include "ddr.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+			   dimm_params_t *pdimm,
+			   unsigned int ctrl_num)
+{
+	const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
+	ulong ddr_freq;
+
+	if (ctrl_num > 1) {
+		printf("Not supported controller number %d\n", ctrl_num);
+		return;
+	}
+	if (!pdimm->n_ranks)
+		return;
+
+	/*
+	 * we use identical timing for all slots. If needed, change the code
+	 * to  pbsp = rdimms[ctrl_num] or pbsp = udimms[ctrl_num];
+	 */
+	pbsp = udimms[0];
+
+	/* Get clk_adjust, wrlvl_start, wrlvl_ctl, according to the board ddr
+	 * freqency and n_banks specified in board_specific_parameters table.
+	 */
+	ddr_freq = get_ddr_freq(0) / 1000000;
+	while (pbsp->datarate_mhz_high) {
+		if (pbsp->n_ranks == pdimm->n_ranks) {
+			if (ddr_freq <= pbsp->datarate_mhz_high) {
+				popts->clk_adjust = pbsp->clk_adjust;
+				popts->wrlvl_start = pbsp->wrlvl_start;
+				popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
+				popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
+				goto found;
+			}
+			pbsp_highest = pbsp;
+		}
+		pbsp++;
+	}
+
+	if (pbsp_highest) {
+		printf("Error: board specific timing not found for %lu MT/s\n",
+		       ddr_freq);
+		printf("Trying to use the highest speed (%u) parameters\n",
+		       pbsp_highest->datarate_mhz_high);
+		popts->clk_adjust = pbsp_highest->clk_adjust;
+		popts->wrlvl_start = pbsp_highest->wrlvl_start;
+		popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
+		popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
+	} else {
+		panic("DIMM is not supported by this board");
+	}
+found:
+	debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n"
+		"\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, wrlvl_ctrl_3 0x%x\n",
+		pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb,
+		pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2,
+		pbsp->wrlvl_ctl_3);
+
+
+
+	popts->half_strength_driver_enable = 0;
+	/*
+	 * Write leveling override
+	 */
+	popts->wrlvl_override = 1;
+	popts->wrlvl_sample = 0xf;
+
+
+	/* Enable ZQ calibration */
+	popts->zq_en = 1;
+
+	/* Enable DDR hashing */
+	popts->addr_hash = 1;
+
+	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_60ohm);
+	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_60ohm) |
+			  DDR_CDR2_VREF_TRAIN_EN | DDR_CDR2_VREF_RANGE_2;
+}
+
+
+int fsl_initdram(void)
+{
+	puts("Initializing DDR....using SPD\n");
+
+	gd->ram_size = fsl_ddr_sdram();
+
+	return 0;
+}