2 * (c) 2011 Graf-Syteco, Matthias Weisser
6 * (C) Copyright 2009 DENX Software Engineering
9 * Based on imx27lite.c:
13 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 #include <asm/arch/imx-regs.h>
35 #include <asm/arch/imx25-pinmux.h>
37 DECLARE_GLOBAL_DATA_PTR;
41 struct iomuxc_mux_ctl *muxctl;
42 struct iomuxc_pad_ctl *padctl;
43 struct iomuxc_pad_input_select *inputselect;
44 u32 gpio_mux_mode0_sion = MX25_PIN_MUX_MODE(0) | MX25_PIN_MUX_SION;
45 u32 gpio_mux_mode1 = MX25_PIN_MUX_MODE(1);
46 u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
47 u32 gpio_mux_mode6 = MX25_PIN_MUX_MODE(6);
48 u32 input_select1 = MX25_PAD_INPUT_SELECT_DAISY(1);
49 u32 input_select2 = MX25_PAD_INPUT_SELECT_DAISY(2);
53 muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
54 padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
55 inputselect = (struct iomuxc_pad_input_select *)IMX_IOPADINPUTSEL_BASE;
57 /* Setup of core volatage selection pin to run at 1.4V */
58 writel(gpio_mux_mode5, &muxctl->pad_ext_armclk); /* VCORE GPIO3[15] */
59 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 15), 1);
61 /* Setup of input daisy chains for SD card pins*/
62 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_cmd);
63 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_clk);
64 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data0);
65 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data1);
66 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data2);
67 writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data3);
69 /* Setup of digital output for USB power and OC */
70 writel(gpio_mux_mode5, &muxctl->pad_csi_d3); /* USB Power GPIO1[28] */
71 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 28), 1);
73 writel(gpio_mux_mode5, &muxctl->pad_csi_d2); /* USB OC GPIO1[27] */
74 gpio_direction_input(MXC_GPIO_PORT_TO_NUM(1, 18));
76 /* Setup of digital output control pins */
77 writel(gpio_mux_mode5, &muxctl->pad_csi_d8); /* Ouput 1 Ctrl GPIO1[7] */
78 writel(gpio_mux_mode5, &muxctl->pad_csi_d7); /* Ouput 2 Ctrl GPIO1[6] */
79 writel(gpio_mux_mode5, &muxctl->pad_csi_d6); /* Ouput 1 Stat GPIO1[31]*/
80 writel(gpio_mux_mode5, &muxctl->pad_csi_d5); /* Ouput 2 Stat GPIO1[30]*/
82 writel(0, &padctl->pad_csi_d6); /* Ouput 1 Stat pull up off */
83 writel(0, &padctl->pad_csi_d5); /* Ouput 2 Stat pull up off */
85 /* Switch both output drivers off */
86 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 7), 0);
87 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 6), 0);
89 /* Setup of key input pin GPIO2[29]*/
90 writel(gpio_mux_mode5 | MX25_PIN_MUX_SION, &muxctl->pad_kpp_row0);
91 writel(0, &padctl->pad_kpp_row0); /* Key pull up off */
92 gpio_direction_input(MXC_GPIO_PORT_TO_NUM(2, 29));
94 /* Setup of status LED outputs */
95 writel(gpio_mux_mode5, &muxctl->pad_csi_d9); /* GPIO4[21] */
96 writel(gpio_mux_mode5, &muxctl->pad_csi_d4); /* GPIO1[29] */
98 /* Switch both LEDs off */
99 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(4, 21), 0);
100 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
102 /* Setup of CAN1 and CAN2 signals */
103 writel(gpio_mux_mode6, &muxctl->pad_gpio_a); /* CAN1 TX */
104 writel(gpio_mux_mode6, &muxctl->pad_gpio_b); /* CAN1 RX */
105 writel(gpio_mux_mode6, &muxctl->pad_gpio_c); /* CAN2 TX */
106 writel(gpio_mux_mode6, &muxctl->pad_gpio_d); /* CAN2 RX */
108 /* Setup of input daisy chains for CAN signals*/
109 writel(input_select1, &inputselect->can1_ipp_ind_canrx); /* CAN1 RX */
110 writel(input_select1, &inputselect->can2_ipp_ind_canrx); /* CAN2 RX */
112 /* Setup of I2C3 signals */
113 writel(gpio_mux_mode1, &muxctl->pad_cspi1_ss1); /* I2C3 SDA */
114 writel(gpio_mux_mode1, &muxctl->pad_gpio_e); /* I2C3 SCL */
116 /* Setup of input daisy chains for I2C3 signals*/
117 writel(input_select1, &inputselect->i2c3_ipp_sda_in); /* I2C3 SDA */
118 writel(input_select2, &inputselect->i2c3_ipp_scl_in); /* I2C3 SCL */
120 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
125 int board_late_init(void)
129 #ifdef CONFIG_FEC_MXC
130 struct iomuxc_mux_ctl *muxctl;
131 struct iomuxc_pad_ctl *padctl;
132 u32 gpio_mux_mode2 = MX25_PIN_MUX_MODE(2);
133 u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
136 * fec pin init is generic
138 mx25_fec_init_pins();
141 * Set up LAN-RESET and FEC_RX_ERR
143 * LAN-RESET: GPIO3[16] is ALT 5 mode of pin U20
144 * FEC_RX_ERR: FEC_RX_ERR is ALT 2 mode of pin R2
146 muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
147 padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
149 writel(gpio_mux_mode5, &muxctl->pad_upll_bypclk);
150 writel(gpio_mux_mode2, &muxctl->pad_uart2_cts);
152 /* assert PHY reset (low) */
153 gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 16), 0);
157 /* deassert PHY reset */
158 gpio_set_value(MXC_GPIO_PORT_TO_NUM(3, 16), 1);
163 e = getenv("gs_base_board");
165 if (strcmp(e, "G283") == 0) {
166 int key = gpio_get_value(MXC_GPIO_PORT_TO_NUM(2, 29));
169 /* Switch on both LEDs to inidcate boot mode */
170 gpio_set_value(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
171 gpio_set_value(MXC_GPIO_PORT_TO_NUM(4, 21), 0);
173 setenv("preboot", "run gs_slow_boot");
175 setenv("preboot", "run gs_fast_boot");
184 /* dram_init must store complete ramsize in gd->ram_size */
185 gd->ram_size = get_ram_size((void *)PHYS_SDRAM,