arch/arm/mach-at91/matrix.c

   1 /*
   2  * Copyright (C) 2015 Atmel Corporation
   3  *                    Wenyou Yang <wenyou.yang@atmel.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/hardware.h>
  10 #include <asm/io.h>
  11 #include <asm/arch/sama5_matrix.h>
  12
  13 void matrix_init(void)
  14 {
  15         struct atmel_matrix *h64mx = (struct atmel_matrix *)ATMEL_BASE_MATRIX0;
  16         struct atmel_matrix *h32mx = (struct atmel_matrix *)ATMEL_BASE_MATRIX1;
  17         int i;
  18
  19         /* DDR port 1 ~ port 7 */
  20         for (i = H64MX_SLAVE_DDRC_PORT1; i <= H64MX_SLAVE_DDRC_PORT7; i++) {
  21                 writel(0x000f0f0f, &h64mx->ssr[i]);
  22                 writel(0x0000ffff, &h64mx->sassr[i]);
  23                 writel(0x0000000f, &h64mx->srtsr[i]);
  24         }
  25
  26         /* EBI CS3 (NANDFlash 128M) and NFC Command Registers(128M) */
  27         writel(0x00c0c0c0, &h32mx->ssr[H32MX_SLAVE_EBI]);
  28         writel(0xff000000, &h32mx->sassr[H32MX_SLAVE_EBI]);
  29         writel(0xff000000, &h32mx->srtsr[H32MX_SLAVE_EBI]);
  30
  31         /* NFC SRAM */
  32         writel(0x00010101, &h32mx->ssr[H32MX_SLAVE_NFC_SRAM]);
  33         writel(0x00000001, &h32mx->sassr[H32MX_SLAVE_NFC_SRAM]);
  34         writel(0x00000001, &h32mx->srtsr[H32MX_SLAVE_NFC_SRAM]);
  35 }