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/*
* Keystone2: DDR3 initialization
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include "ddr3_cfg.h"
#include <asm/arch/ddr3.h>
#include <asm/arch/hardware.h>
struct pll_init_data ddr3a_333 = DDR3_PLL_333(A);
struct pll_init_data ddr3a_400 = DDR3_PLL_400(A);
u32 ddr3_init(void)
{
u32 ddr3_size;
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);
if ((cpu_revision() > 1) ||
(__raw_readl(KS2_RSTCTRL_RSTYPE) & 0x1)) {
printf("DDR3 speed %d\n", spd_cb.ddrspdclock);
if (spd_cb.ddrspdclock == 1600)
init_pll(&ddr3a_400);
else
init_pll(&ddr3a_333);
}
if (cpu_revision() > 0) {
if (cpu_revision() > 1) {
/* PG 2.0 */
/* Reset DDR3A 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);
ddr3_size = spd_cb.ddr_size_gbyte;
} else {
ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC, &spd_cb.phy_cfg);
spd_cb.emif_cfg.sdcfg |= 0x1000;
ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE, &spd_cb.emif_cfg);
ddr3_size = spd_cb.ddr_size_gbyte / 2;
}
printf("DRAM: %d GiB (includes reported below)\n", ddr3_size);
/* Apply the workaround for PG 1.0 and 1.1 Silicons */
if (cpu_revision() <= 1)
ddr3_err_reset_workaround();
return ddr3_size;
}
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