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-rw-r--r--board/freescale/c29xpcie/ddr.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/board/freescale/c29xpcie/ddr.c b/board/freescale/c29xpcie/ddr.c
new file mode 100644
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+++ b/board/freescale/c29xpcie/ddr.c
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+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/fsl_law.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+
+/*
+ * Micron MT41J128M16HA-15E
+ * */
+dimm_params_t ddr_raw_timing = {
+ .n_ranks = 1,
+ .rank_density = 536870912u,
+ .capacity = 536870912u,
+ .primary_sdram_width = 32,
+ .ec_sdram_width = 8,
+ .registered_dimm = 0,
+ .mirrored_dimm = 0,
+ .n_row_addr = 14,
+ .n_col_addr = 10,
+ .n_banks_per_sdram_device = 8,
+ .edc_config = 2,
+ .burst_lengths_bitmask = 0x0c,
+
+ .tCKmin_X_ps = 1650,
+ .caslat_X = 0x7e << 4, /* 5,6,7,8,9,10 */
+ .tAA_ps = 14050,
+ .tWR_ps = 15000,
+ .tRCD_ps = 13500,
+ .tRRD_ps = 75000,
+ .tRP_ps = 13500,
+ .tRAS_ps = 40000,
+ .tRC_ps = 49500,
+ .tRFC_ps = 160000,
+ .tWTR_ps = 75000,
+ .tRTP_ps = 75000,
+ .refresh_rate_ps = 7800000,
+ .tFAW_ps = 30000,
+};
+
+int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
+ unsigned int controller_number,
+ unsigned int dimm_number)
+{
+ const char dimm_model[] = "Fixed DDR on board";
+
+ if ((controller_number == 0) && (dimm_number == 0)) {
+ memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
+ memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
+ memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
+ }
+
+ return 0;
+}
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+ dimm_params_t *pdimm,
+ unsigned int ctrl_num)
+{
+ int i;
+ popts->clk_adjust = 2;
+ popts->cpo_override = 0x1f;
+ popts->write_data_delay = 4;
+ popts->half_strength_driver_enable = 1;
+ popts->bstopre = 0x3cf;
+ popts->quad_rank_present = 1;
+ popts->rtt_override = 1;
+ popts->rtt_override_value = 1;
+ popts->dynamic_power = 1;
+ /* Write leveling override */
+ popts->wrlvl_en = 1;
+ popts->wrlvl_override = 1;
+ popts->wrlvl_sample = 0xf;
+ popts->wrlvl_start = 0x4;
+ popts->trwt_override = 1;
+ popts->trwt = 0;
+
+ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
+ popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
+ }
+}