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u-boot/board/siemens/dxr2/board.c
Stefan Roese cc07294bc7 arm: am335x: DXR2: Reset SMSC LAN9303 switch via GPIO upon bootup 
Since the switch may be re-configured for VLAN usage in Linux (or any
other OS), lets reset the switch to its default register values upon
power-up. Otherwise network might not be available in U-Boot.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Lukas Stockmann <lukas.stockmann@siemens.com>
Cc: Tom Rini <trini@ti.com>
2014-03-04 09:42:07 -05:00

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/*
* Board functions for TI AM335X based dxr2 board
* (C) Copyright 2013 Siemens Schweiz AG
* (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* Based on:
*
* Board functions for TI AM335X based boards
* u-boot:/board/ti/am335x/board.c
*
* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/omap.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <asm/emif.h>
#include <asm/gpio.h>
#include <i2c.h>
#include <miiphy.h>
#include <cpsw.h>
#include <watchdog.h>
#include "board.h"
#include "../common/factoryset.h"
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_SPL_BUILD
static struct dxr2_baseboard_id __attribute__((section(".data"))) settings;
/* @303MHz-i0 */
const struct ddr3_data ddr3_default = {
0x33524444, 0x56312e34, 0x0080, 0x0000, 0x0038, 0x003E, 0x00A4,
0x0075, 0x0888A39B, 0x26247FDA, 0x501F821F, 0x00100206, 0x61A44A32,
0x00000618, 0x0000014A,
};
static void set_default_ddr3_timings(void)
{
printf("Set default DDR3 settings\n");
settings.ddr3 = ddr3_default;
}
static void print_ddr3_timings(void)
{
printf("\n\nDDR3 Timing parameters:\n");
printf("Diff Eeprom Default\n");
PRINTARGS(magic);
PRINTARGS(version);
PRINTARGS(ddr3_sratio);
PRINTARGS(iclkout);
PRINTARGS(dt0rdsratio0);
PRINTARGS(dt0wdsratio0);
PRINTARGS(dt0fwsratio0);
PRINTARGS(dt0wrsratio0);
PRINTARGS(sdram_tim1);
PRINTARGS(sdram_tim2);
PRINTARGS(sdram_tim3);
PRINTARGS(emif_ddr_phy_ctlr_1);
PRINTARGS(sdram_config);
PRINTARGS(ref_ctrl);
PRINTARGS(ioctr_val);
}
static void print_chip_data(void)
{
printf("\n");
printf("Device: '%s'\n", settings.chip.sdevname);
printf("HW version: '%s'\n", settings.chip.shwver);
}
#endif /* CONFIG_SPL_BUILD */
/*
* Read header information from EEPROM into global structure.
*/
static int read_eeprom(void)
{
/* Check if baseboard eeprom is available */
if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
return 1;
}
#ifdef CONFIG_SPL_BUILD
/* Read Siemens eeprom data (DDR3) */
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2,
(uchar *)&settings.ddr3, sizeof(struct ddr3_data))) {
printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n");
set_default_ddr3_timings();
}
/* Read Siemens eeprom data (CHIP) */
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2,
(uchar *)&settings.chip, sizeof(settings.chip)))
printf("Could not read chip settings\n");
if (ddr3_default.magic == settings.ddr3.magic &&
ddr3_default.version == settings.ddr3.version) {
printf("Using DDR3 settings from EEPROM\n");
} else {
if (ddr3_default.magic != settings.ddr3.magic)
printf("Error: No valid DDR3 data in eeprom.\n");
if (ddr3_default.version != settings.ddr3.version)
printf("Error: DDR3 data version does not match.\n");
printf("Using default settings\n");
set_default_ddr3_timings();
}
if (MAGIC_CHIP == settings.chip.magic) {
printf("Valid chip data in eeprom\n");
print_chip_data();
} else {
printf("Error: No chip data in eeprom\n");
}
print_ddr3_timings();
#endif
return 0;
}
#ifdef CONFIG_SPL_BUILD
static void board_init_ddr(void)
{
struct emif_regs dxr2_ddr3_emif_reg_data = {
.zq_config = 0x50074BE4,
};
struct ddr_data dxr2_ddr3_data = {
};
struct cmd_control dxr2_ddr3_cmd_ctrl_data = {
};
struct ctrl_ioregs dxr2_ddr3_ioregs = {
};
/* pass values from eeprom */
dxr2_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1;
dxr2_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2;
dxr2_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3;
dxr2_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 =
settings.ddr3.emif_ddr_phy_ctlr_1;
dxr2_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config;
dxr2_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl;
dxr2_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0;
dxr2_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0;
dxr2_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0;
dxr2_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0;
dxr2_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio;
dxr2_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout;
dxr2_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio;
dxr2_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout;
dxr2_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio;
dxr2_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout;
dxr2_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val,
dxr2_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val,
dxr2_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val,
dxr2_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val,
dxr2_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val,
config_ddr(DDR_PLL_FREQ, &dxr2_ddr3_ioregs, &dxr2_ddr3_data,
&dxr2_ddr3_cmd_ctrl_data, &dxr2_ddr3_emif_reg_data, 0);
}
static void spl_siemens_board_init(void)
{
return;
}
#endif /* if def CONFIG_SPL_BUILD */
#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
static void cpsw_control(int enabled)
{
/* VTP can be added here */
return;
}
static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_addr = 0,
.phy_if = PHY_INTERFACE_MODE_MII,
},
};
static struct cpsw_platform_data cpsw_data = {
.mdio_base = CPSW_MDIO_BASE,
.cpsw_base = CPSW_BASE,
.mdio_div = 0xff,
.channels = 4,
.cpdma_reg_ofs = 0x800,
.slaves = 1,
.slave_data = cpsw_slaves,
.ale_reg_ofs = 0xd00,
.ale_entries = 1024,
.host_port_reg_ofs = 0x108,
.hw_stats_reg_ofs = 0x900,
.bd_ram_ofs = 0x2000,
.mac_control = (1 << 5),
.control = cpsw_control,
.host_port_num = 0,
.version = CPSW_CTRL_VERSION_2,
};
#if defined(CONFIG_DRIVER_TI_CPSW) || \
(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
int board_eth_init(bd_t *bis)
{
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
int n = 0;
int rv;
factoryset_setenv();
/* Reset SMSC LAN9303 switch for default configuration */
gpio_request(GPIO_LAN9303_NRST, "nRST");
gpio_direction_output(GPIO_LAN9303_NRST, 0);
/* assert active low reset for 200us */
udelay(200);
gpio_set_value(GPIO_LAN9303_NRST, 1);
/* Set rgmii mode and enable rmii clock to be sourced from chip */
writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
rv = cpsw_register(&cpsw_data);
if (rv < 0)
printf("Error %d registering CPSW switch\n", rv);
else
n += rv;
return n;
}
#endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
#endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
#include "../common/board.c"
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