avr32:grasshopper: fix PHY initialisation
[karo-tx-uboot.git] / board / in-circuit / grasshopper / grasshopper.c
1 /*
2  * Copyright (C) 2011
3  * Corscience GmbH & Co.KG, Andreas BieƟmann <biessmann@corscience.de>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 #include <common.h>
24
25 #include <asm/io.h>
26 #include <asm/sdram.h>
27 #include <asm/arch/clk.h>
28 #include <asm/arch/hmatrix.h>
29 #include <asm/arch/mmu.h>
30 #include <asm/arch/portmux.h>
31 #include <netdev.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
36         {
37                 .virt_pgno      = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
38                 .nr_pages       = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
39                 .phys           = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
40                                 | MMU_VMR_CACHE_NONE,
41         }, {
42                 .virt_pgno      = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
43                 .nr_pages       = EBI_SDRAM_SIZE >> PAGE_SHIFT,
44                 .phys           = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
45                                 | MMU_VMR_CACHE_WRBACK,
46         },
47 };
48
49 static const struct sdram_config sdram_config = {
50         /* Dual MT48LC16M16A2-7E (or equal) */
51         .data_bits              = SDRAM_DATA_32BIT,
52         .row_bits               = 13,
53         .col_bits               = 9,
54         .bank_bits              = 2,
55         .cas                    = 2,
56         .twr                    = 2,
57         .trc                    = 7,
58         .trp                    = 2,
59         .trcd                   = 2,
60         .tras                   = 4,
61         .txsr                   = 7,
62         /* 7.81 us */
63         .refresh_period         = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
64 };
65
66 int board_early_init_f(void)
67 {
68         /* Enable SDRAM in the EBI mux */
69         hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
70
71         portmux_enable_ebi(SDRAM_DATA_32BIT, 23, 0, PORTMUX_DRIVE_HIGH);
72         portmux_enable_usart0(PORTMUX_DRIVE_MIN);
73         portmux_enable_usart1(PORTMUX_DRIVE_MIN);
74 #if defined(CONFIG_MACB)
75         /* set PHY reset and pwrdown to low */
76         portmux_select_gpio(PORTMUX_PORT_B, (1 << 29) | (1 << 30),
77                 PORTMUX_DIR_OUTPUT | PORTMUX_INIT_LOW);
78         udelay(100);
79         /* release PHYs reset */
80         gpio_set_value(GPIO_PIN_PB(29), 1);
81
82         portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_LOW);
83 #endif
84
85         return 0;
86 }
87
88 phys_size_t initdram(int board_type)
89 {
90         unsigned long expected_size;
91         unsigned long actual_size;
92         void *sdram_base;
93
94         sdram_base = uncached(EBI_SDRAM_BASE);
95
96         expected_size = sdram_init(sdram_base, &sdram_config);
97         actual_size = get_ram_size(sdram_base, expected_size);
98
99         if (expected_size != actual_size)
100                 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
101                                 actual_size >> 20, expected_size >> 20);
102
103         return actual_size;
104 }
105
106 int board_early_init_r(void)
107 {
108         gd->bd->bi_phy_id[0] = 0x00;
109         return 0;
110 }
111
112 #ifdef CONFIG_CMD_NET
113 int board_eth_init(bd_t *bi)
114 {
115         macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
116         return 0;
117 }
118 #endif
119 /* vim: set noet ts=8: */