Gitiles
Code Review Sign In
gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 1a4596601fd395f3afb8f82f3f840c5e00bdd57a / . / board / bluewater / snapper9260 / snapper9260.c
blob: be03553384f44cae0d13d3a310d278b669c6853a [file] [log] [blame]
Ryan Mallonb8d41dd2011-06-05 07:21:22 +0000[diff] [blame]1/*
2 * Bluewater Systems Snapper 9260/9G20 modules
3 *
4 * (C) Copyright 2011 Bluewater Systems
5 * Author: Andre Renaud <andre@bluewatersys.com>
6 * Author: Ryan Mallon <ryan@bluewatersys.com>
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame^]8 * SPDX-License-Identifier: GPL-2.0+
Ryan Mallonb8d41dd2011-06-05 07:21:22 +0000[diff] [blame]9 */
10
11#include <common.h>
12#include <asm/io.h>
13#include <asm/arch/at91sam9260_matrix.h>
14#include <asm/arch/at91sam9_smc.h>
15#include <asm/arch/at91_common.h>
16#include <asm/arch/at91_pmc.h>
17#include <asm/arch/at91_rstc.h>
18#include <asm/arch/gpio.h>
19#include <net.h>
20#include <netdev.h>
21#include <i2c.h>
22#include <pca953x.h>
23
24DECLARE_GLOBAL_DATA_PTR;
25
26/* IO Expander pins */
27#define IO_EXP_ETH_RESET (0 << 1)
28#define IO_EXP_ETH_POWER (1 << 1)
29
30static void macb_hw_init(void)
31{
32 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
33 struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
34 struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
35 unsigned long erstl;
36
37 /* Enable clock */
38 writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
39
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),
44 &pioa->pudr);
45
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);
49
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);
53
54 /* Enable ethernet power */
55 pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
56
57 /* Need to reset PHY -> 500ms reset */
58 erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
59 writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
60 AT91_RSTC_MR_URSTEN, &rstc->mr);
61 writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
62
63 /* Wait for end hardware reset */
64 while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
65 ;
66
67 /* Restore NRST value */
68 writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN, &rstc->mr);
69
70 /* Bring the ethernet out of reset */
71 pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
72
73 /* The phy internal reset take 21ms */
74 udelay(21 * 1000);
75
76 /* Re-enable pull-up */
77 writel(pin_to_mask(AT91_PIN_PA14) |
78 pin_to_mask(AT91_PIN_PA15) |
79 pin_to_mask(AT91_PIN_PA18),
80 &pioa->puer);
81
82 at91_macb_hw_init();
83}
84
85static void nand_hw_init(void)
86{
87 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
88 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
89 unsigned long csa;
90
91 /* Enable CS3 as NAND/SmartMedia */
92 csa = readl(&matrix->ebicsa);
93 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
94 writel(csa, &matrix->ebicsa);
95
96 /* Configure SMC CS3 for NAND/SmartMedia */
97 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
98 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
99 &smc->cs[3].setup);
100 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
101 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
102 &smc->cs[3].pulse);
103 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
104 &smc->cs[3].cycle);
105 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
106 AT91_SMC_MODE_EXNW_DISABLE |
107 AT91_SMC_MODE_DBW_8 |
108 AT91_SMC_MODE_TDF_CYCLE(3),
109 &smc->cs[3].mode);
110
111 /* Configure RDY/BSY */
112 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
113
114 /* Enable NandFlash */
115 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
116}
117
118int board_init(void)
119{
120 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
121
122 /* Enable PIO clocks */
123 writel((1 << ATMEL_ID_PIOA) |
124 (1 << ATMEL_ID_PIOB) |
125 (1 << ATMEL_ID_PIOC), &pmc->pcer);
126
127 /* The mach-type is the same for both Snapper 9260 and 9G20 */
128 gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
129
130 /* Address of boot parameters */
131 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
132
133 /* Initialise peripherals */
134 at91_seriald_hw_init();
135 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
136 nand_hw_init();
137 macb_hw_init();
138
139 return 0;
140}
141
142int board_eth_init(bd_t *bis)
143{
144 return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
145}
146
147int dram_init(void)
148{
149 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
150 CONFIG_SYS_SDRAM_SIZE);
151 return 0;
152}
153
154void reset_phy(void)
155{
156}