u-boot/board/amlogic/p212/p212.c
Neil Armstrong ae0d82fc64 arm: amlogic: p212: Add support for Ethernet with Internal PHY
This patch adds support for the Internal RMII Ethernet PHY on the
Amlogic P212 Reference Board.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2017-11-17 07:44:13 -05:00

58 lines
1.3 KiB
C

/*
* Copyright (C) 2016 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/arch/gxbb.h>
#include <asm/arch/sm.h>
#include <phy.h>
#define EFUSE_SN_OFFSET 20
#define EFUSE_SN_SIZE 16
#define EFUSE_MAC_OFFSET 52
#define EFUSE_MAC_SIZE 6
int board_init(void)
{
return 0;
}
int misc_init_r(void)
{
u8 mac_addr[EFUSE_MAC_SIZE];
char serial[EFUSE_SN_SIZE];
ssize_t len;
/* Set RMII mode */
out_le32(GXBB_ETH_REG_0, GXBB_ETH_REG_0_INVERT_RMII_CLK |
GXBB_ETH_REG_0_CLK_EN);
/* Use Internal PHY */
out_le32(GXBB_ETH_REG_2, 0x10110181);
out_le32(GXBB_ETH_REG_3, 0xe40908ff);
/* Enable power and clock gate */
setbits_le32(GXBB_GCLK_MPEG_1, GXBB_GCLK_MPEG_1_ETH);
clrbits_le32(GXBB_MEM_PD_REG_0, GXBB_MEM_PD_REG_0_ETH_MASK);
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
mac_addr, EFUSE_MAC_SIZE);
if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
eth_env_set_enetaddr("ethaddr", mac_addr);
}
if (!env_get("serial#")) {
len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
EFUSE_SN_SIZE);
if (len == EFUSE_SN_SIZE)
env_set("serial#", serial);
}
return 0;
}