114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
/*
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* dm644x.c - DM644x specific platform initialization
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*
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* Copyright (C) 2008 Hugo Villeneuve <hugo@hugovil.com>
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*
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* Based on TI DaVinci Flash and Boot Utilities, original copyright follows:
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* Copyright 2008 Texas Instruments, Inc. <www.ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "davinci.h"
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#include "util.h"
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#define VTPIOCR_EN_MASK (1 << 13)
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#define VTPIOCR_RECAL_MASK (1 << 15)
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#define DDRVTPER_EN_MASK (1 << 0)
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#define DDRVTPR_CAL_DATA_MASK 0x03FF
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/* List of modules to enable in the PSC */
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const int8_t lpsc_en_list[] = {
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LPSC_VPSS_MAST,
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LPSC_VPSS_SLV,
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LPSC_EDMACC,
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LPSC_EDMATC0,
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LPSC_EDMATC1,
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LPSC_EMAC,
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LPSC_EMAC_MEM_CTL,
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LPSC_MDIO,
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LPSC_USB,
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LPSC_ATA,
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LPSC_VLYNQ,
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LPSC_HPI,
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LPSC_DDR2,
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LPSC_AEMIF,
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LPSC_MMC_SD0,
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LPSC_ASP0,
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LPSC_I2C,
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LPSC_UART0,
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LPSC_GPIO,
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LPSC_TIMER0,
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LPSC_ARM,
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LPSC_IMCOP,
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};
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const size_t lpsc_en_list_len = sizeof(lpsc_en_list) /
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sizeof(lpsc_en_list[0]);
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/* List of modules for which to control EMURSTIE */
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const int8_t lpsc_emurstie_list[] = {
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LPSC_VPSS_SLV,
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LPSC_EMAC,
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LPSC_EMAC_MEM_CTL,
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LPSC_MDIO,
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LPSC_USB,
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LPSC_ATA,
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LPSC_VLYNQ,
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LPSC_HPI,
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LPSC_DDR2,
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LPSC_AEMIF,
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LPSC_MMC_SD0,
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LPSC_ASP0,
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LPSC_GPIO,
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LPSC_IMCOP,
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};
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const size_t lpsc_emurstie_list_len = sizeof(lpsc_emurstie_list) /
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sizeof(lpsc_emurstie_list[0]);
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/* DDR2 VTP Calibration */
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void
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ddr_vtp_calibration(void)
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{
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int32_t cal_data;
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/* Enable VTP IO calibration bit (not started) */
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DDR->VTPIOCR = 0x0000001F | VTPIOCR_EN_MASK;
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/* Start VTP IO calibration */
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DDR->VTPIOCR |= VTPIOCR_RECAL_MASK;
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/* Wait for calibration to complete */
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waitloop(11*33);
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/* Enable access to DDRVTPR */
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SYSTEM->DDRVTPER = DDRVTPER_EN_MASK;
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cal_data = DDRVTPR & DDRVTPR_CAL_DATA_MASK; /* Read calibration data */
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/* Write calibration data to VTP Control register */
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DDR->VTPIOCR &= ~DDRVTPR_CAL_DATA_MASK;
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DDR->VTPIOCR |= cal_data;
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/* Disable VTP IO calibration bit */
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DDR->VTPIOCR &= ~VTPIOCR_EN_MASK;
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/* Disable access to DDRVTPR */
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SYSTEM->DDRVTPER = 0;
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}
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