1 // SPDX-License-Identifier: GPL-2.0+
3 * Bluewater Systems Snapper 9260/9G20 modules
5 * (C) Copyright 2011 Bluewater Systems
6 * Author: Andre Renaud <andre@bluewatersys.com>
7 * Author: Ryan Mallon <ryan@bluewatersys.com>
15 #include <asm/mach-types.h>
16 #include <asm/arch/at91sam9260_matrix.h>
17 #include <asm/arch/at91sam9_smc.h>
18 #include <asm/arch/at91_common.h>
19 #include <asm/arch/clk.h>
20 #include <asm/arch/gpio.h>
21 #include <asm/arch/atmel_serial.h>
26 #include <linux/delay.h>
28 DECLARE_GLOBAL_DATA_PTR;
30 /* IO Expander pins */
31 #define IO_EXP_ETH_RESET (0 << 1)
32 #define IO_EXP_ETH_POWER (1 << 1)
34 static void macb_hw_init(void)
36 struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
38 at91_periph_clk_enable(ATMEL_ID_EMAC0);
40 /* Disable pull-ups to prevent PHY going into test mode */
41 writel(pin_to_mask(AT91_PIN_PA14) |
42 pin_to_mask(AT91_PIN_PA15) |
43 pin_to_mask(AT91_PIN_PA18),
46 /* Power down ethernet */
47 pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
48 pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
50 /* Hold ethernet in reset */
51 pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
52 pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
54 /* Enable ethernet power */
55 pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
59 /* Bring the ethernet out of reset */
60 pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
62 /* The phy internal reset take 21ms */
65 /* Re-enable pull-up */
66 writel(pin_to_mask(AT91_PIN_PA14) |
67 pin_to_mask(AT91_PIN_PA15) |
68 pin_to_mask(AT91_PIN_PA18),
74 static void nand_hw_init(void)
76 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
77 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
80 /* Enable CS3 as NAND/SmartMedia */
81 csa = readl(&matrix->ebicsa);
82 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
83 writel(csa, &matrix->ebicsa);
85 /* Configure SMC CS3 for NAND/SmartMedia */
86 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
87 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
89 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
90 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
92 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
94 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
95 AT91_SMC_MODE_EXNW_DISABLE |
97 AT91_SMC_MODE_TDF_CYCLE(3),
100 /* Configure RDY/BSY */
101 gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand_rdy");
102 gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
104 /* Enable NandFlash */
105 gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand_ce");
106 gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
111 at91_periph_clk_enable(ATMEL_ID_PIOA);
112 at91_periph_clk_enable(ATMEL_ID_PIOB);
113 at91_periph_clk_enable(ATMEL_ID_PIOC);
115 /* The mach-type is the same for both Snapper 9260 and 9G20 */
116 gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
118 /* Address of boot parameters */
119 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
121 /* Initialise peripherals */
122 at91_seriald_hw_init();
130 int board_eth_init(bd_t *bis)
132 return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
137 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
138 CONFIG_SYS_SDRAM_SIZE);
146 static struct atmel_serial_platdata at91sam9260_serial_plat = {
147 .base_addr = ATMEL_BASE_DBGU,
150 U_BOOT_DEVICE(at91sam9260_serial) = {
151 .name = "serial_atmel",
152 .platdata = &at91sam9260_serial_plat,