snapper9260.c
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/*
* Bluewater Systems Snapper 9260/9G20 modules
*
* (C) Copyright 2011 Bluewater Systems
* Author: Andre Renaud <andre@bluewatersys.com>
* Author: Ryan Mallon <ryan@bluewatersys.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/mach-types.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/arch/atmel_serial.h>
#include <net.h>
#include <netdev.h>
#include <i2c.h>
#include <pca953x.h>
DECLARE_GLOBAL_DATA_PTR;
/* IO Expander pins */
#define IO_EXP_ETH_RESET (0 << 1)
#define IO_EXP_ETH_POWER (1 << 1)
static void macb_hw_init(void)
{
struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
at91_periph_clk_enable(ATMEL_ID_EMAC0);
/* Disable pull-ups to prevent PHY going into test mode */
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA18),
&pioa->pudr);
/* Power down ethernet */
pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
/* Hold ethernet in reset */
pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
/* Enable ethernet power */
pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
at91_phy_reset();
/* Bring the ethernet out of reset */
pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
/* The phy internal reset take 21ms */
udelay(21 * 1000);
/* Re-enable pull-up */
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA18),
&pioa->puer);
at91_macb_hw_init();
}
static void nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
unsigned long csa;
/* Enable CS3 as NAND/SmartMedia */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
writel(csa, &matrix->ebicsa);
/* Configure SMC CS3 for NAND/SmartMedia */
writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
&smc->cs[3].setup);
writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
&smc->cs[3].cycle);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
AT91_SMC_MODE_DBW_8 |
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
/* Configure RDY/BSY */
gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand_rdy");
gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
/* Enable NandFlash */
gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand_ce");
gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
int board_init(void)
{
at91_periph_clk_enable(ATMEL_ID_PIOA);
at91_periph_clk_enable(ATMEL_ID_PIOB);
at91_periph_clk_enable(ATMEL_ID_PIOC);
/* The mach-type is the same for both Snapper 9260 and 9G20 */
gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
/* Address of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
/* Initialise peripherals */
at91_seriald_hw_init();
i2c_set_bus_num(0);
nand_hw_init();
macb_hw_init();
return 0;
}
int board_eth_init(bd_t *bis)
{
return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
}
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
void reset_phy(void)
{
}
static struct atmel_serial_platdata at91sam9260_serial_plat = {
.base_addr = ATMEL_BASE_DBGU,
};
U_BOOT_DEVICE(at91sam9260_serial) = {
.name = "serial_atmel",
.platdata = &at91sam9260_serial_plat,
};