Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / board / gdsys / p1022 / ddr.c

diff --git a/board/gdsys/p1022/ddr.c b/board/gdsys/p1022/ddr.c
new file mode 100644 (file)
index 0000000..4a652de
--- /dev/null
+++ b/board/gdsys/p1022/ddr.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ * Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
+ *          Timur Tabi <timur@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+
+void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm,
+                          unsigned int ctrl_num)
+{
+       unsigned int i;
+
+       if (ctrl_num) {
+               printf("Wrong parameter for controller number %d", ctrl_num);
+               return;
+       }
+       if (!pdimm->n_ranks)
+               return;
+
+       /* set odt_rd_cfg and odt_wr_cfg. */
+       for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+               popts->cs_local_opts[i].odt_rd_cfg = 0;
+               popts->cs_local_opts[i].odt_wr_cfg = 1;
+       }
+
+       popts->clk_adjust = 5;
+       popts->cpo_override = 0x1f;
+       popts->write_data_delay = 2;
+       popts->half_strength_driver_enable = 1;
+
+       /* Per AN4039, enable ZQ calibration. */
+       popts->zq_en = 1;
+}
+
+#ifdef CONFIG_SPD_EEPROM
+/*
+ * we only have a "fake" SPD-EEPROM here, which has 16 bit addresses
+ */
+void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
+{
+       int ret = i2c_read(i2c_address, 0, 2, (uchar *)spd,
+                               sizeof(generic_spd_eeprom_t));
+
+       if (ret) {
+               if (i2c_address ==
+#ifdef SPD_EEPROM_ADDRESS
+                               SPD_EEPROM_ADDRESS
+#elif defined(SPD_EEPROM_ADDRESS1)
+                               SPD_EEPROM_ADDRESS1
+#endif
+                               ) {
+                       printf("DDR: failed to read SPD from address %u\n",
+                              i2c_address);
+               } else {
+                       debug("DDR: failed to read SPD from address %u\n",
+                             i2c_address);
+               }
+               memset(spd, 0, sizeof(generic_spd_eeprom_t));
+       }
+}
+#endif