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"
30 #define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
31 #define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
32 #define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18)
33 #define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30)
34 #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
36 #define MX28EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(2, 12)
37 #define MX28EVK_MMC1_WRITE_PROTECT MXS_GPIO_NR(0, 28)
38 #define MX28EVK_MMC0_SLOT_POWER MXS_GPIO_NR(3, 28)
39 #define MX28EVK_MMC1_SLOT_POWER MXS_GPIO_NR(3, 29)
41 static const iomux_cfg_t mx28evk_pads[] __initconst = {
43 MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
44 MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
47 MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
48 MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
49 MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
50 MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
52 MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
53 MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
54 MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
55 MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
57 #define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
59 MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
60 MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
61 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
62 MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
63 MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
64 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
65 MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
66 MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
67 MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
69 MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
70 MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
71 MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
72 MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
73 MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
74 MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
76 MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL,
78 MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL,
81 MX28_PAD_GPMI_RDY2__CAN0_TX,
82 MX28_PAD_GPMI_RDY3__CAN0_RX,
84 MX28_PAD_GPMI_CE2N__CAN1_TX,
85 MX28_PAD_GPMI_CE3N__CAN1_RX,
86 /* transceiver power control */
87 MX28_PAD_SSP1_CMD__GPIO_2_13,
90 MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
91 MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
92 MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
93 MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
94 MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
95 MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
96 MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
97 MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
98 MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
99 MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
100 MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
101 MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
102 MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
103 MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
104 MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
105 MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
106 MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
107 MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
108 MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
109 MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
110 MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
111 MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
112 MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
113 MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
114 MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
115 MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
116 MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
117 MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL,
118 /* LCD panel enable */
119 MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
120 /* backlight control */
121 MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL,
123 MX28_PAD_SSP0_DATA0__SSP0_D0 |
124 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
125 MX28_PAD_SSP0_DATA1__SSP0_D1 |
126 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
127 MX28_PAD_SSP0_DATA2__SSP0_D2 |
128 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
129 MX28_PAD_SSP0_DATA3__SSP0_D3 |
130 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
131 MX28_PAD_SSP0_DATA4__SSP0_D4 |
132 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
133 MX28_PAD_SSP0_DATA5__SSP0_D5 |
134 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
135 MX28_PAD_SSP0_DATA6__SSP0_D6 |
136 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
137 MX28_PAD_SSP0_DATA7__SSP0_D7 |
138 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
139 MX28_PAD_SSP0_CMD__SSP0_CMD |
140 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
141 MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
142 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
143 MX28_PAD_SSP0_SCK__SSP0_SCK |
144 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
146 MX28_PAD_SSP1_SCK__GPIO_2_12 |
147 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
148 /* slot power enable */
149 MX28_PAD_PWM3__GPIO_3_28 |
150 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
153 MX28_PAD_GPMI_D00__SSP1_D0 |
154 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
155 MX28_PAD_GPMI_D01__SSP1_D1 |
156 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
157 MX28_PAD_GPMI_D02__SSP1_D2 |
158 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
159 MX28_PAD_GPMI_D03__SSP1_D3 |
160 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
161 MX28_PAD_GPMI_D04__SSP1_D4 |
162 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
163 MX28_PAD_GPMI_D05__SSP1_D5 |
164 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
165 MX28_PAD_GPMI_D06__SSP1_D6 |
166 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
167 MX28_PAD_GPMI_D07__SSP1_D7 |
168 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
169 MX28_PAD_GPMI_RDY1__SSP1_CMD |
170 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
171 MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT |
172 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
173 MX28_PAD_GPMI_WRN__SSP1_SCK |
174 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
176 MX28_PAD_GPMI_RESETN__GPIO_0_28 |
177 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
178 /* slot power enable */
179 MX28_PAD_PWM4__GPIO_3_29 |
180 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
184 static void __init mx28evk_fec_reset(void)
189 /* Enable fec phy clock */
190 clk = clk_get_sys("pll2", NULL);
194 /* Power up fec phy */
195 ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
197 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
201 ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
203 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
208 ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
210 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
214 gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
216 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
221 gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
224 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
227 .phy = PHY_INTERFACE_MODE_RMII,
230 .phy = PHY_INTERFACE_MODE_RMII,
234 static int __init mx28evk_fec_get_mac(void)
238 const u32 *ocotp = mxs_get_ocotp();
244 * OCOTP only stores the last 4 octets for each mac address,
245 * so hard-code Freescale OUI (00:04:9f) here.
247 for (i = 0; i < 2; i++) {
249 mx28_fec_pdata[i].mac[0] = 0x00;
250 mx28_fec_pdata[i].mac[1] = 0x04;
251 mx28_fec_pdata[i].mac[2] = 0x9f;
252 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
253 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
254 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
260 pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
265 * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
267 static int flexcan0_en, flexcan1_en;
269 static void mx28evk_flexcan_switch(void)
271 if (flexcan0_en || flexcan1_en)
272 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
274 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
277 static void mx28evk_flexcan0_switch(int enable)
279 flexcan0_en = enable;
280 mx28evk_flexcan_switch();
283 static void mx28evk_flexcan1_switch(int enable)
285 flexcan1_en = enable;
286 mx28evk_flexcan_switch();
289 static const struct flexcan_platform_data
290 mx28evk_flexcan_pdata[] __initconst = {
292 .transceiver_switch = mx28evk_flexcan0_switch,
294 .transceiver_switch = mx28evk_flexcan1_switch,
299 static struct fb_videomode mx28evk_video_modes[] = {
301 .name = "Seiko-43WVF1G",
305 .pixclock = 29851, /* picosecond (33.5 MHz) */
312 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
313 FB_SYNC_DOTCLK_FAILING_ACT,
317 static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = {
318 .mode_list = mx28evk_video_modes,
319 .mode_count = ARRAY_SIZE(mx28evk_video_modes),
321 .ld_intf_width = STMLCDIF_24BIT,
324 static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
327 .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT,
328 .flags = SLOTF_8_BIT_CAPABLE,
331 .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT,
332 .flags = SLOTF_8_BIT_CAPABLE,
336 static void __init mx28evk_init(void)
340 mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
346 if (mx28evk_fec_get_mac())
347 pr_warn("%s: failed on fec mac setup\n", __func__);
350 mx28_add_fec(0, &mx28_fec_pdata[0]);
351 mx28_add_fec(1, &mx28_fec_pdata[1]);
353 ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
356 pr_err("failed to request gpio flexcan-switch: %d\n", ret);
358 mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]);
359 mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
362 ret = gpio_request_one(MX28EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
364 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
366 gpio_set_value(MX28EVK_LCD_ENABLE, 1);
368 ret = gpio_request_one(MX28EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
370 pr_warn("failed to request gpio bl-enable: %d\n", ret);
372 gpio_set_value(MX28EVK_BL_ENABLE, 1);
374 mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
376 /* power on mmc slot by writing 0 to the gpio */
377 ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
380 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
381 mx28_add_mxs_mmc(0, &mx28evk_mmc_pdata[0]);
383 ret = gpio_request_one(MX28EVK_MMC1_SLOT_POWER, GPIOF_OUT_INIT_LOW,
386 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
387 mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
390 static void __init mx28evk_timer_init(void)
395 static struct sys_timer mx28evk_timer = {
396 .init = mx28evk_timer_init,
399 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
400 /* Maintainer: Freescale Semiconductor, Inc. */
401 .map_io = mx28_map_io,
402 .init_irq = mx28_init_irq,
403 .init_machine = mx28evk_init,
404 .timer = &mx28evk_timer,