98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/*
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* Keystone2: DDR3 initialization
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*
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* (C) Copyright 2012-2014
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* Texas Instruments Incorporated, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include "ddr3_cfg.h"
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#include <asm/arch/ddr3.h>
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#include <asm/arch/hardware.h>
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struct pll_init_data ddr3a_333 = DDR3_PLL_333(A);
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struct pll_init_data ddr3a_400 = DDR3_PLL_400(A);
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u32 ddr3_init(void)
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{
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char dimm_name[32];
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u32 ddr3_size;
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ddr3_get_dimm_params(dimm_name);
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printf("Detected SO-DIMM [%s]\n", dimm_name);
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if (!strcmp(dimm_name, "18KSF1G72HZ-1G6E2 ")) {
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init_pll(&ddr3a_400);
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if (cpu_revision() > 0) {
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if (cpu_revision() > 1) {
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/* PG 2.0 */
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/* Reset DDR3A PHY after PLL enabled */
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ddr3_reset_ddrphy();
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ddr3phy_1600_8g.zq0cr1 |= 0x10000;
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ddr3phy_1600_8g.zq1cr1 |= 0x10000;
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ddr3phy_1600_8g.zq2cr1 |= 0x10000;
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC,
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&ddr3phy_1600_8g);
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} else {
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/* PG 1.1 */
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC,
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&ddr3phy_1600_8g);
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}
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ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE,
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&ddr3_1600_8g);
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printf("DRAM: Capacity 8 GiB (includes reported below)\n");
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ddr3_size = 8;
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} else {
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC, &ddr3phy_1600_8g);
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ddr3_1600_8g.sdcfg |= 0x1000;
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ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE,
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&ddr3_1600_8g);
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printf("DRAM: Capacity 4 GiB (includes reported below)\n");
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ddr3_size = 4;
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}
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} else if (!strcmp(dimm_name, "SQR-SD3T-2G1333SED")) {
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init_pll(&ddr3a_333);
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if (cpu_revision() > 0) {
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if (cpu_revision() > 1) {
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/* PG 2.0 */
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/* Reset DDR3A PHY after PLL enabled */
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ddr3_reset_ddrphy();
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ddr3phy_1333_2g.zq0cr1 |= 0x10000;
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ddr3phy_1333_2g.zq1cr1 |= 0x10000;
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ddr3phy_1333_2g.zq2cr1 |= 0x10000;
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC,
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&ddr3phy_1333_2g);
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} else {
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/* PG 1.1 */
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC,
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&ddr3phy_1333_2g);
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}
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ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE,
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&ddr3_1333_2g);
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ddr3_size = 2;
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printf("DRAM: 2 GiB");
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} else {
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ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC, &ddr3phy_1333_2g);
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ddr3_1333_2g.sdcfg |= 0x1000;
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ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE,
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&ddr3_1333_2g);
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ddr3_size = 1;
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printf("DRAM: 1 GiB");
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}
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} else {
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printf("Unknown SO-DIMM. Cannot configure DDR3\n");
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while (1)
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;
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}
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/* Apply the workaround for PG 1.0 and 1.1 Silicons */
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if (cpu_revision() <= 1)
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ddr3_err_reset_workaround();
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return ddr3_size;
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}
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