ddr3_k2e.c
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/*
* Keystone2: DDR3 initialization
*
* (C) Copyright 2014-2015
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include "ddr3_cfg.h"
#include <asm/arch/ddr3.h>
static struct pll_init_data ddr3_400 = DDR3_PLL_400;
static struct pll_init_data ddr3_333 = DDR3_PLL_333;
u32 ddr3_init(void)
{
struct ddr3_spd_cb spd_cb;
if (ddr3_get_dimm_params_from_spd(&spd_cb)) {
printf("Sorry, I don't know how to configure DDR3A.\n"
"Bye :(\n");
for (;;)
;
}
printf("Detected SO-DIMM [%s]\n", spd_cb.dimm_name);
printf("DDR3 speed %d\n", spd_cb.ddrspdclock);
if (spd_cb.ddrspdclock == 1600)
init_pll(&ddr3_400);
else
init_pll(&ddr3_333);
/* Reset DDR3 PHY after PLL enabled */
ddr3_reset_ddrphy();
spd_cb.phy_cfg.zq0cr1 |= 0x10000;
spd_cb.phy_cfg.zq1cr1 |= 0x10000;
spd_cb.phy_cfg.zq2cr1 |= 0x10000;
ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC, &spd_cb.phy_cfg);
ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE, &spd_cb.emif_cfg);
printf("DRAM: %d GiB\n", spd_cb.ddr_size_gbyte);
return (u32)spd_cb.ddr_size_gbyte;
}