2 * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/delay.h>
16 #include <linux/platform_device.h>
17 #include <linux/gpio.h>
18 #include <linux/irq.h>
19 #include <linux/clk.h>
21 #include <asm/mach-types.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/time.h>
25 #include <mach/common.h>
26 #include <mach/iomux-mx28.h>
28 #include "devices-mx28.h"
31 #define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
32 #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
34 static const iomux_cfg_t mx28evk_pads[] __initconst = {
36 MX28_PAD_PWM0__DUART_RX |
37 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
38 MX28_PAD_PWM1__DUART_TX |
39 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
42 MX28_PAD_ENET0_MDC__ENET0_MDC |
43 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
44 MX28_PAD_ENET0_MDIO__ENET0_MDIO |
45 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
46 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN |
47 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
48 MX28_PAD_ENET0_RXD0__ENET0_RXD0 |
49 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
50 MX28_PAD_ENET0_RXD1__ENET0_RXD1 |
51 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
52 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN |
53 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
54 MX28_PAD_ENET0_TXD0__ENET0_TXD0 |
55 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
56 MX28_PAD_ENET0_TXD1__ENET0_TXD1 |
57 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
58 MX28_PAD_ENET_CLK__CLKCTRL_ENET |
59 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
61 MX28_PAD_SSP1_DATA3__GPIO_2_15 |
62 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
64 MX28_PAD_ENET0_RX_CLK__GPIO_4_13 |
65 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
69 static void __init mx28evk_fec_reset(void)
74 /* Enable fec phy clock */
75 clk = clk_get_sys("pll2", NULL);
79 /* Power up fec phy */
80 ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
82 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
86 ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
88 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
93 ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
95 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
99 gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
101 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
106 gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
109 static const struct fec_platform_data mx28_fec_pdata __initconst = {
110 .phy = PHY_INTERFACE_MODE_RMII,
113 static void __init mx28evk_init(void)
115 mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
120 mx28_add_fec(0, &mx28_fec_pdata);
123 static void __init mx28evk_timer_init(void)
128 static struct sys_timer mx28evk_timer = {
129 .init = mx28evk_timer_init,
132 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
133 /* Maintainer: Freescale Semiconductor, Inc. */
134 .map_io = mx28_map_io,
135 .init_irq = mx28_init_irq,
136 .init_machine = mx28evk_init,
137 .timer = &mx28evk_timer,