board/amlogic/odroid-c2/odroid-c2.c

   1 /*
   2  * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/gxbb.h>
  11 #include <asm/arch/sm.h>
  12 #include <phy.h>
  13
  14 #define EFUSE_SN_OFFSET         20
  15 #define EFUSE_SN_SIZE           16
  16 #define EFUSE_MAC_OFFSET        52
  17 #define EFUSE_MAC_SIZE          6
  18
  19 int board_init(void)
  20 {
  21         return 0;
  22 }
  23
  24 int misc_init_r(void)
  25 {
  26         u8 mac_addr[EFUSE_MAC_SIZE];
  27         char serial[EFUSE_SN_SIZE];
  28         ssize_t len;
  29
  30         /* Set RGMII mode */
  31         setbits_le32(GXBB_ETH_REG_0, GXBB_ETH_REG_0_PHY_INTF |
  32                                      GXBB_ETH_REG_0_TX_PHASE(1) |
  33                                      GXBB_ETH_REG_0_TX_RATIO(4) |
  34                                      GXBB_ETH_REG_0_PHY_CLK_EN |
  35                                      GXBB_ETH_REG_0_CLK_EN);
  36
  37         /* Enable power and clock gate */
  38         setbits_le32(GXBB_GCLK_MPEG_0, GXBB_GCLK_MPEG_0_I2C);
  39         setbits_le32(GXBB_GCLK_MPEG_1, GXBB_GCLK_MPEG_1_ETH);
  40         clrbits_le32(GXBB_MEM_PD_REG_0, GXBB_MEM_PD_REG_0_ETH_MASK);
  41
  42         /* Reset PHY on GPIOZ_14 */
  43         clrbits_le32(GXBB_GPIO_EN(3), BIT(14));
  44         clrbits_le32(GXBB_GPIO_OUT(3), BIT(14));
  45         mdelay(10);
  46         setbits_le32(GXBB_GPIO_OUT(3), BIT(14));
  47
  48         if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
  49                 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
  50                                           mac_addr, EFUSE_MAC_SIZE);
  51                 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
  52                         eth_env_set_enetaddr("ethaddr", mac_addr);
  53         }
  54
  55         if (!env_get("serial#")) {
  56                 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
  57                         EFUSE_SN_SIZE);
  58                 if (len == EFUSE_SN_SIZE)
  59                         env_set("serial#", serial);
  60         }
  61
  62         return 0;
  63 }