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_AUART0_RX__AUART0_RX |
43 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
44 MX28_PAD_AUART0_TX__AUART0_TX |
45 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
46 MX28_PAD_AUART0_CTS__AUART0_CTS |
47 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
48 MX28_PAD_AUART0_RTS__AUART0_RTS |
49 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
51 MX28_PAD_AUART3_RX__AUART3_RX |
52 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
53 MX28_PAD_AUART3_TX__AUART3_TX |
54 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
55 MX28_PAD_AUART3_CTS__AUART3_CTS |
56 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
57 MX28_PAD_AUART3_RTS__AUART3_RTS |
58 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
61 MX28_PAD_ENET0_MDC__ENET0_MDC |
62 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
63 MX28_PAD_ENET0_MDIO__ENET0_MDIO |
64 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
65 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN |
66 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
67 MX28_PAD_ENET0_RXD0__ENET0_RXD0 |
68 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
69 MX28_PAD_ENET0_RXD1__ENET0_RXD1 |
70 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
71 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN |
72 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
73 MX28_PAD_ENET0_TXD0__ENET0_TXD0 |
74 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
75 MX28_PAD_ENET0_TXD1__ENET0_TXD1 |
76 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
77 MX28_PAD_ENET_CLK__CLKCTRL_ENET |
78 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
80 MX28_PAD_ENET0_CRS__ENET1_RX_EN |
81 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
82 MX28_PAD_ENET0_RXD2__ENET1_RXD0 |
83 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
84 MX28_PAD_ENET0_RXD3__ENET1_RXD1 |
85 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
86 MX28_PAD_ENET0_COL__ENET1_TX_EN |
87 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
88 MX28_PAD_ENET0_TXD2__ENET1_TXD0 |
89 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
90 MX28_PAD_ENET0_TXD3__ENET1_TXD1 |
91 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
93 MX28_PAD_SSP1_DATA3__GPIO_2_15 |
94 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
96 MX28_PAD_ENET0_RX_CLK__GPIO_4_13 |
97 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
101 static void __init mx28evk_fec_reset(void)
106 /* Enable fec phy clock */
107 clk = clk_get_sys("pll2", NULL);
111 /* Power up fec phy */
112 ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
114 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
118 ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
120 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
125 ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
127 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
131 gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
133 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
138 gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
141 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
144 .phy = PHY_INTERFACE_MODE_RMII,
147 .phy = PHY_INTERFACE_MODE_RMII,
151 static int __init mx28evk_fec_get_mac(void)
155 const u32 *ocotp = mxs_get_ocotp();
161 * OCOTP only stores the last 4 octets for each mac address,
162 * so hard-code Freescale OUI (00:04:9f) here.
164 for (i = 0; i < 2; i++) {
166 mx28_fec_pdata[i].mac[0] = 0x00;
167 mx28_fec_pdata[i].mac[1] = 0x04;
168 mx28_fec_pdata[i].mac[2] = 0x9f;
169 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
170 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
171 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
177 pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
181 static void __init mx28evk_init(void)
183 mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
189 if (mx28evk_fec_get_mac())
190 pr_warn("%s: failed on fec mac setup\n", __func__);
193 mx28_add_fec(0, &mx28_fec_pdata[0]);
194 mx28_add_fec(1, &mx28_fec_pdata[1]);
197 static void __init mx28evk_timer_init(void)
202 static struct sys_timer mx28evk_timer = {
203 .init = mx28evk_timer_init,
206 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
207 /* Maintainer: Freescale Semiconductor, Inc. */
208 .map_io = mx28_map_io,
209 .init_irq = mx28_init_irq,
210 .init_machine = mx28evk_init,
211 .timer = &mx28evk_timer,