1 /*
2  * (C) Copyright 2011 Freescale Semiconductor, Inc.
3  *
4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/gpio.h>
12 #include <asm/arch/imx-regs.h>
13 #include <asm/arch/iomux-mx25.h>
14 #include <asm/arch/clock.h>
15 #include <mmc.h>
16 #include <fsl_esdhc.h>
17 #include <i2c.h>
18 #include <power/pmic.h>
19 #include <fsl_pmic.h>
20 #include <mc34704.h>
21 
22 #define FEC_RESET_B		IMX_GPIO_NR(4, 8)
23 #define FEC_ENABLE_B		IMX_GPIO_NR(2, 3)
24 #define CARD_DETECT		IMX_GPIO_NR(2, 1)
25 
26 DECLARE_GLOBAL_DATA_PTR;
27 
28 #ifdef CONFIG_FSL_ESDHC
29 struct fsl_esdhc_cfg esdhc_cfg[1] = {
30 	{IMX_MMC_SDHC1_BASE},
31 };
32 #endif
33 
34 /*
35  * FIXME: need to revisit this
36  * The original code enabled PUE and 100-k pull-down without PKE, so the right
37  * value here is likely:
38  *	0 for no pull
39  * or:
40  *	PAD_CTL_PUS_100K_DOWN for 100-k pull-down
41  */
42 #define FEC_OUT_PAD_CTRL	0
43 
44 #define I2C_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
45 				 PAD_CTL_ODE)
46 
47 static void mx25pdk_fec_init(void)
48 {
49 	static const iomux_v3_cfg_t fec_pads[] = {
50 		MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
51 		MX25_PAD_FEC_RX_DV__FEC_RX_DV,
52 		MX25_PAD_FEC_RDATA0__FEC_RDATA0,
53 		NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
54 		NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
55 		NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
56 		MX25_PAD_FEC_MDIO__FEC_MDIO,
57 		MX25_PAD_FEC_RDATA1__FEC_RDATA1,
58 		NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
59 
60 		NEW_PAD_CTRL(MX25_PAD_D12__GPIO_4_8, 0), /* FEC_RESET_B */
61 		NEW_PAD_CTRL(MX25_PAD_A17__GPIO_2_3, 0), /* FEC_ENABLE_B */
62 	};
63 
64 	static const iomux_v3_cfg_t i2c_pads[] = {
65 		NEW_PAD_CTRL(MX25_PAD_I2C1_CLK__I2C1_CLK, I2C_PAD_CTRL),
66 		NEW_PAD_CTRL(MX25_PAD_I2C1_DAT__I2C1_DAT, I2C_PAD_CTRL),
67 	};
68 
69 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
70 
71 	/* Assert RESET and ENABLE low */
72 	gpio_direction_output(FEC_RESET_B, 0);
73 	gpio_direction_output(FEC_ENABLE_B, 0);
74 
75 	udelay(10);
76 
77 	/* Deassert RESET and ENABLE */
78 	gpio_set_value(FEC_RESET_B, 1);
79 	gpio_set_value(FEC_ENABLE_B, 1);
80 
81 	/* Setup I2C pins so that PMIC can turn on PHY supply */
82 	imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
83 }
84 
85 int dram_init(void)
86 {
87 	/* dram_init must store complete ramsize in gd->ram_size */
88 	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
89 				PHYS_SDRAM_1_SIZE);
90 	return 0;
91 }
92 
93 /*
94  * Set up input pins with hysteresis and 100-k pull-ups
95  */
96 #define UART1_IN_PAD_CTRL	(PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
97 /*
98  * FIXME: need to revisit this
99  * The original code enabled PUE and 100-k pull-down without PKE, so the right
100  * value here is likely:
101  *	0 for no pull
102  * or:
103  *	PAD_CTL_PUS_100K_DOWN for 100-k pull-down
104  */
105 #define UART1_OUT_PAD_CTRL	0
106 
107 static void mx25pdk_uart1_init(void)
108 {
109 	static const iomux_v3_cfg_t uart1_pads[] = {
110 		NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
111 		NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
112 		NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
113 		NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
114 	};
115 
116 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
117 }
118 
119 int board_early_init_f(void)
120 {
121 	mx25pdk_uart1_init();
122 
123 	return 0;
124 }
125 
126 int board_init(void)
127 {
128 	/* address of boot parameters */
129 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
130 
131 	return 0;
132 }
133 
134 int board_late_init(void)
135 {
136 	struct pmic *p;
137 	int ret;
138 
139 	mx25pdk_fec_init();
140 
141 	ret = pmic_init(I2C_0);
142 	if (ret)
143 		return ret;
144 
145 	p = pmic_get("FSL_PMIC");
146 	if (!p)
147 		return -ENODEV;
148 
149 	/* Turn on Ethernet PHY and LCD supplies */
150 	pmic_reg_write(p, MC34704_GENERAL2_REG, ONOFFE | ONOFFA);
151 
152 	return 0;
153 }
154 
155 #ifdef CONFIG_FSL_ESDHC
156 int board_mmc_getcd(struct mmc *mmc)
157 {
158 	/* Set up the Card Detect pin. */
159 	imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_A15__GPIO_2_1, 0));
160 
161 	gpio_direction_input(CARD_DETECT);
162 	return !gpio_get_value(CARD_DETECT);
163 }
164 
165 int board_mmc_init(bd_t *bis)
166 {
167 	static const iomux_v3_cfg_t sdhc1_pads[] = {
168 		NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
169 		NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
170 		NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
171 		NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
172 		NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
173 		NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
174 	};
175 
176 	imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
177 
178 	esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
179 	return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
180 }
181 #endif
182 
183 int checkboard(void)
184 {
185 	puts("Board: MX25PDK\n");
186 
187 	return 0;
188 }
189