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/*
* Copyright (C) 2015 Sascha Hauer, Pengutronix
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <init.h>
#include <environment.h>
#include <mach/imx6-regs.h>
#include <mach/bbu.h>
#include <asm/armlinux.h>
#include <linux/phy.h>
#include <mach/generic.h>
#include <linux/sizes.h>
#include <mach/imx6.h>
#include <net.h>
static int phy_fixup(struct phy_device *phydev)
{
unsigned short val;
/* Ar8031 phy SmartEEE feature cause link status generates glitch,
* which cause ethernet link down/up issue, so disable SmartEEE
*/
phy_write(phydev, 0xd, 0x3);
phy_write(phydev, 0xe, 0x805d);
phy_write(phydev, 0xd, 0x4003);
val = phy_read(phydev, 0xe);
val &= ~(0x1 << 8);
phy_write(phydev, 0xe, val);
/* To enable AR8031 ouput a 125MHz clk from CLK_25M */
phy_write(phydev, 0xd, 0x7);
phy_write(phydev, 0xe, 0x8016);
phy_write(phydev, 0xd, 0x4007);
val = phy_read(phydev, 0xe);
val &= 0xffe3;
val |= 0x18;
phy_write(phydev, 0xe, val);
/* introduce tx clock delay */
phy_write(phydev, 0x1d, 0x5);
val = phy_read(phydev, 0x1e);
val |= 0x0100;
phy_write(phydev, 0x1e, val);
return 0;
}
#define PHY_ID_AR8031 0x004dd074
static int cm_fx6_eeprom_init(void)
{
struct cdev *cdev;
u8 mac[6];
int ret;
if (!of_machine_is_compatible("compulab,cm-fx6"))
return 0;
cdev = cdev_by_name("eeprom0");
if (!cdev)
return -ENODEV;
ret = cdev_read(cdev, mac, 6, 4, 0);
if (ret < 0)
return ret;
eth_register_ethaddr(0, mac);
return 0;
}
late_initcall(cm_fx6_eeprom_init);
static int cm_fx6_devices_init(void)
{
const char *hostname;
if (!of_machine_is_compatible("compulab,cm-fx6"))
return 0;
if (of_machine_is_compatible("compulab,utilite"))
hostname = "utilite";
else
hostname = "cm-fx6";
barebox_set_hostname(hostname);
if (IS_ENABLED(CONFIG_PHYLIB))
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, phy_fixup);
imx6_bbu_internal_spi_i2c_register_handler("spiflash", "/dev/m25p0",
BBU_HANDLER_FLAG_DEFAULT);
return 0;
}
coredevice_initcall(cm_fx6_devices_init);
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