blob: d757d978cfb17dd1ffd2e4886a05afc6d0851b84 [file] [log] [blame]
David Lechner2ac07f72016-02-26 00:46:07 -06001/*
2 * Copyright (C) 2016 David Lechner <david@lechnology.com>
3 *
4 * Based on da850evm.c
5 *
6 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
7 *
8 * Based on da830evm.c. Original Copyrights follow:
9 *
10 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
11 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
12 *
13 * SPDX-License-Identifier: GPL-2.0+
14 */
15
16#include <common.h>
17#include <i2c.h>
18#include <net.h>
19#include <netdev.h>
20#include <spi.h>
21#include <spi_flash.h>
22#include <asm/arch/hardware.h>
23#include <asm/arch/pinmux_defs.h>
24#include <asm/io.h>
25#include <asm/arch/davinci_misc.h>
Masahiro Yamada1221ce42016-09-21 11:28:55 +090026#include <linux/errno.h>
David Lechner2ac07f72016-02-26 00:46:07 -060027#include <hwconfig.h>
28
29#ifdef CONFIG_DAVINCI_MMC
30#include <mmc.h>
31#include <asm/arch/sdmmc_defs.h>
32#endif
33
34DECLARE_GLOBAL_DATA_PTR;
35
36u8 board_rev;
37
38#define EEPROM_I2C_ADDR 0x50
39#define EEPROM_REV_OFFSET 0x3F00
40#define EEPROM_MAC_OFFSET 0x3F06
41
42#ifdef CONFIG_DAVINCI_MMC
43static struct davinci_mmc mmc_sd0 = {
44 .reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
45 .host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */
46 .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
47 .version = MMC_CTLR_VERSION_2,
48};
49
50int board_mmc_init(bd_t *bis)
51{
52 mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
53
54 /* Add slot-0 to mmc subsystem */
55 return davinci_mmc_init(bis, &mmc_sd0);
56}
57#endif
58
59const struct pinmux_resource pinmuxes[] = {
60 PINMUX_ITEM(spi0_pins_base),
61 PINMUX_ITEM(spi0_pins_scs0),
62 PINMUX_ITEM(uart1_pins_txrx),
63 PINMUX_ITEM(i2c0_pins),
64 PINMUX_ITEM(mmc0_pins),
65};
66
67const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
68
69const struct lpsc_resource lpsc[] = {
70 { DAVINCI_LPSC_SPI0 }, /* Serial Flash */
71 { DAVINCI_LPSC_UART1 }, /* console */
72 { DAVINCI_LPSC_MMC_SD },
73};
74
75const int lpsc_size = ARRAY_SIZE(lpsc);
76
77u32 get_board_rev(void)
78{
79 u8 buf[2];
80
81 if (!board_rev) {
82 if (i2c_read(EEPROM_I2C_ADDR, EEPROM_REV_OFFSET, 2, buf, 2)) {
83 printf("\nBoard revision read failed!\n");
84 } else {
85 /*
86 * Board rev 3 has MAC address at EEPROM_REV_OFFSET.
87 * Other revisions have checksum at EEPROM_REV_OFFSET+1
88 * to detect this.
89 */
90 if ((buf[0] ^ buf[1]) == 0xFF)
91 board_rev = buf[0];
92 else
93 board_rev = 3;
94 }
95 }
96
97 return board_rev;
98}
99
100/*
101 * The Bluetooth MAC address serves as the board serial number.
102 */
103void get_board_serial(struct tag_serialnr *serialnr)
104{
105 u32 offset;
106 u8 buf[6];
107
108 if (!board_rev)
109 board_rev = get_board_rev();
110
111 /* Board rev 3 has MAC address where rev should be */
112 offset = (board_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_MAC_OFFSET;
113
114 if (i2c_read(EEPROM_I2C_ADDR, offset, 2, buf, 6)) {
115 printf("\nBoard serial read failed!\n");
116 } else {
117 u8 *nr;
118
119 nr = (u8 *)&serialnr->low;
120 nr[0] = buf[5];
121 nr[1] = buf[4];
122 nr[2] = buf[3];
123 nr[3] = buf[2];
124 nr = (u8 *)&serialnr->high;
125 nr[0] = buf[1];
126 nr[1] = buf[0];
127 nr[2] = 0;
128 nr[3] = 0;
129 }
130}
131
132int board_early_init_f(void)
133{
134 /*
135 * Power on required peripherals
136 * ARM does not have access by default to PSC0 and PSC1
137 * assuming here that the DSP bootloader has set the IOPU
138 * such that PSC access is available to ARM
139 */
140 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
141 return 1;
142
143 return 0;
144}
145
146int board_init(void)
147{
148#ifndef CONFIG_USE_IRQ
149 irq_init();
150#endif
151
152 /* arch number of the board */
153 /* LEGO didn't register for a unique number and uses da850evm */
154 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
155
156 /* address of boot parameters */
157 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
158
159 /* setup the SUSPSRC for ARM to control emulation suspend */
160 writel(readl(&davinci_syscfg_regs->suspsrc) &
161 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
162 DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
163 DAVINCI_SYSCFG_SUSPSRC_UART1),
164 &davinci_syscfg_regs->suspsrc);
165
166 /* configure pinmux settings */
167 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
168 return 1;
169
170 /* enable the console UART */
171 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
172 DAVINCI_UART_PWREMU_MGMT_UTRST),
173 &davinci_uart1_ctrl_regs->pwremu_mgmt);
174
175 return 0;
176}