rt-thread/bsp/synwit/swm341/drivers/drv_sdram.c

/*
 * Copyright (c) 2006-2022, Synwit Technology Co.,Ltd.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2021-07-01     lik          first version
 */

#include "drv_sdram.h"

#ifdef BSP_USING_SDRAM

#define DRV_DEBUG
#define LOG_TAG "drv.sdram"
#include <drv_log.h>

int swm_sdram_init(void)
{
    SDRAM_InitStructure SDRAM_InitStruct;

    PORT_Init(PORTM, PIN13, PORTM_PIN13_SDR_CLK, 0);
    PORT_Init(PORTM, PIN14, PORTM_PIN14_SDR_CKE, 0);
    PORT_Init(PORTB, PIN7, PORTB_PIN7_SDR_WE, 0);
    PORT_Init(PORTB, PIN8, PORTB_PIN8_SDR_CAS, 0);
    PORT_Init(PORTB, PIN9, PORTB_PIN9_SDR_RAS, 0);
    PORT_Init(PORTB, PIN10, PORTB_PIN10_SDR_CS, 0);
    PORT_Init(PORTE, PIN15, PORTE_PIN15_SDR_BA0, 0);
    PORT_Init(PORTE, PIN14, PORTE_PIN14_SDR_BA1, 0);
    PORT_Init(PORTN, PIN14, PORTN_PIN14_SDR_A0, 0);
    PORT_Init(PORTN, PIN13, PORTN_PIN13_SDR_A1, 0);
    PORT_Init(PORTN, PIN12, PORTN_PIN12_SDR_A2, 0);
    PORT_Init(PORTN, PIN11, PORTN_PIN11_SDR_A3, 0);
    PORT_Init(PORTN, PIN10, PORTN_PIN10_SDR_A4, 0);
    PORT_Init(PORTN, PIN9, PORTN_PIN9_SDR_A5, 0);
    PORT_Init(PORTN, PIN8, PORTN_PIN8_SDR_A6, 0);
    PORT_Init(PORTN, PIN7, PORTN_PIN7_SDR_A7, 0);
    PORT_Init(PORTN, PIN6, PORTN_PIN6_SDR_A8, 0);
    PORT_Init(PORTN, PIN3, PORTN_PIN3_SDR_A9, 0);
    PORT_Init(PORTN, PIN15, PORTN_PIN15_SDR_A10, 0);
    PORT_Init(PORTN, PIN2, PORTN_PIN2_SDR_A11, 0);
    PORT_Init(PORTM, PIN15, PORTM_PIN15_SDR_A12, 0);
    PORT_Init(PORTE, PIN7, PORTE_PIN7_SDR_D0, 1);
    PORT_Init(PORTE, PIN6, PORTE_PIN6_SDR_D1, 1);
    PORT_Init(PORTE, PIN5, PORTE_PIN5_SDR_D2, 1);
    PORT_Init(PORTE, PIN4, PORTE_PIN4_SDR_D3, 1);
    PORT_Init(PORTE, PIN3, PORTE_PIN3_SDR_D4, 1);
    PORT_Init(PORTE, PIN2, PORTE_PIN2_SDR_D5, 1);
    PORT_Init(PORTE, PIN1, PORTE_PIN1_SDR_D6, 1);
    PORT_Init(PORTE, PIN0, PORTE_PIN0_SDR_D7, 1);
    PORT_Init(PORTE, PIN8, PORTE_PIN8_SDR_D8, 1);
    PORT_Init(PORTE, PIN9, PORTE_PIN9_SDR_D9, 1);
    PORT_Init(PORTE, PIN10, PORTE_PIN10_SDR_D10, 1);
    PORT_Init(PORTE, PIN11, PORTE_PIN11_SDR_D11, 1);
    PORT_Init(PORTE, PIN12, PORTE_PIN12_SDR_D12, 1);
    PORT_Init(PORTE, PIN13, PORTE_PIN13_SDR_D13, 1);
    PORT_Init(PORTC, PIN14, PORTC_PIN14_SDR_D14, 1);
    PORT_Init(PORTC, PIN15, PORTC_PIN15_SDR_D15, 1);
    PORT_Init(PORTB, PIN6, PORTB_PIN6_SDR_LDQM, 0);
    PORT_Init(PORTM, PIN12, PORTM_PIN12_SDR_UDQM, 0);

    SDRAM_InitStruct.Size = SDRAM_SIZE_8MB;
    SDRAM_InitStruct.ClkDiv = SDRAM_CLKDIV_1;
    SDRAM_InitStruct.CASLatency = SDRAM_CASLATENCY_3;
    SDRAM_InitStruct.RefreshTime = 64;
    SDRAM_InitStruct.TimeTRP  = SDRAM_TRP_2;
    SDRAM_InitStruct.TimeTRCD = SDRAM_TRCD_2;
    SDRAM_InitStruct.TimeTRC  = SDRAM_TRC_7;
    SDRAM_Init(&SDRAM_InitStruct);

    return 0;
}

#endif /* BSP_USING_SDRAM */