summaryrefslogtreecommitdiff
path: root/board/freescale/mx25pdk/mx25pdk.c
blob: c59f0fb922af35be6c5e9db0d84f18d5add56e74 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2011 Freescale Semiconductor, Inc.
 *
 * Author: Fabio Estevam <fabio.estevam@freescale.com>
 */

#include <common.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux-mx25.h>
#include <asm/arch/clock.h>
#include <mmc.h>
#include <fsl_esdhc_imx.h>
#include <i2c.h>
#include <power/pmic.h>
#include <fsl_pmic.h>
#include <mc34704.h>

#define FEC_RESET_B		IMX_GPIO_NR(4, 8)
#define FEC_ENABLE_B		IMX_GPIO_NR(2, 3)
#define CARD_DETECT		IMX_GPIO_NR(2, 1)

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_FSL_ESDHC_IMX
struct fsl_esdhc_cfg esdhc_cfg[1] = {
	{IMX_MMC_SDHC1_BASE},
};
#endif

/*
 * FIXME: need to revisit this
 * The original code enabled PUE and 100-k pull-down without PKE, so the right
 * value here is likely:
 *	0 for no pull
 * or:
 *	PAD_CTL_PUS_100K_DOWN for 100-k pull-down
 */
#define FEC_OUT_PAD_CTRL	0

#define I2C_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
				 PAD_CTL_ODE)

static void mx25pdk_fec_init(void)
{
	static const iomux_v3_cfg_t fec_pads[] = {
		MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
		MX25_PAD_FEC_RX_DV__FEC_RX_DV,
		MX25_PAD_FEC_RDATA0__FEC_RDATA0,
		NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
		MX25_PAD_FEC_MDIO__FEC_MDIO,
		MX25_PAD_FEC_RDATA1__FEC_RDATA1,
		NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),

		NEW_PAD_CTRL(MX25_PAD_D12__GPIO_4_8, 0), /* FEC_RESET_B */
		NEW_PAD_CTRL(MX25_PAD_A17__GPIO_2_3, 0), /* FEC_ENABLE_B */
	};

	static const iomux_v3_cfg_t i2c_pads[] = {
		NEW_PAD_CTRL(MX25_PAD_I2C1_CLK__I2C1_CLK, I2C_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_I2C1_DAT__I2C1_DAT, I2C_PAD_CTRL),
	};

	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));

	/* Assert RESET and ENABLE low */
	gpio_direction_output(FEC_RESET_B, 0);
	gpio_direction_output(FEC_ENABLE_B, 0);

	udelay(10);

	/* Deassert RESET and ENABLE */
	gpio_set_value(FEC_RESET_B, 1);
	gpio_set_value(FEC_ENABLE_B, 1);

	/* Setup I2C pins so that PMIC can turn on PHY supply */
	imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
}

int dram_init(void)
{
	/* dram_init must store complete ramsize in gd->ram_size */
	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
				PHYS_SDRAM_1_SIZE);
	return 0;
}

/*
 * Set up input pins with hysteresis and 100-k pull-ups
 */
#define UART1_IN_PAD_CTRL	(PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
/*
 * FIXME: need to revisit this
 * The original code enabled PUE and 100-k pull-down without PKE, so the right
 * value here is likely:
 *	0 for no pull
 * or:
 *	PAD_CTL_PUS_100K_DOWN for 100-k pull-down
 */
#define UART1_OUT_PAD_CTRL	0

static void mx25pdk_uart1_init(void)
{
	static const iomux_v3_cfg_t uart1_pads[] = {
		NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
	};

	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}

int board_early_init_f(void)
{
	mx25pdk_uart1_init();

	return 0;
}

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	return 0;
}

int board_late_init(void)
{
	struct pmic *p;
	int ret;

	mx25pdk_fec_init();

	ret = pmic_init(I2C_0);
	if (ret)
		return ret;

	p = pmic_get("FSL_PMIC");
	if (!p)
		return -ENODEV;

	/* Turn on Ethernet PHY and LCD supplies */
	pmic_reg_write(p, MC34704_GENERAL2_REG, ONOFFE | ONOFFA);

	return 0;
}

#ifdef CONFIG_FSL_ESDHC_IMX
int board_mmc_getcd(struct mmc *mmc)
{
	/* Set up the Card Detect pin. */
	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_A15__GPIO_2_1, 0));

	gpio_direction_input(CARD_DETECT);
	return !gpio_get_value(CARD_DETECT);
}

int board_mmc_init(bd_t *bis)
{
	static const iomux_v3_cfg_t sdhc1_pads[] = {
		NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
		NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
	};

	imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));

	/*
	 * Set the eSDHC1 PER clock to the maximum frequency lower than or equal
	 * to 50 MHz that can be obtained, which requires to use UPLL as the
	 * clock source. This actually gives 48 MHz.
	 */
	imx_set_perclk(MXC_ESDHC1_CLK, true, 50000000);
	esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
	return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
}
#endif

int checkboard(void)
{
	puts("Board: MX25PDK\n");

	return 0;
}

/* Lowlevel init isn't used on mx25pdk, so just provide a dummy one here */
void lowlevel_init(void) {}