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_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
32 #define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
33 #define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18)
34 #define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30)
35 #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
37 static const iomux_cfg_t mx28evk_pads[] __initconst = {
39 MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
40 MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
43 MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
44 MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
45 MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
46 MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
48 MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
49 MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
50 MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
51 MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
53 #define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
55 MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
56 MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
57 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
58 MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
59 MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
60 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
61 MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
62 MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
63 MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
65 MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
66 MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
67 MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
68 MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
69 MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
70 MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
72 MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL,
74 MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL,
77 MX28_PAD_GPMI_RDY2__CAN0_TX,
78 MX28_PAD_GPMI_RDY3__CAN0_RX,
80 MX28_PAD_GPMI_CE2N__CAN1_TX,
81 MX28_PAD_GPMI_CE3N__CAN1_RX,
82 /* transceiver power control */
83 MX28_PAD_SSP1_CMD__GPIO_2_13,
86 MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
87 MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
88 MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
89 MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
90 MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
91 MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
92 MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
93 MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
94 MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
95 MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
96 MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
97 MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
98 MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
99 MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
100 MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
101 MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
102 MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
103 MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
104 MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
105 MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
106 MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
107 MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
108 MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
109 MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
110 MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
111 MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
112 MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
113 MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL,
114 /* LCD panel enable */
115 MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
116 /* backlight control */
117 MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL,
121 static void __init mx28evk_fec_reset(void)
126 /* Enable fec phy clock */
127 clk = clk_get_sys("pll2", NULL);
131 /* Power up fec phy */
132 ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
134 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
138 ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
140 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
145 ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
147 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
151 gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
153 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
158 gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
161 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
164 .phy = PHY_INTERFACE_MODE_RMII,
167 .phy = PHY_INTERFACE_MODE_RMII,
171 static int __init mx28evk_fec_get_mac(void)
175 const u32 *ocotp = mxs_get_ocotp();
181 * OCOTP only stores the last 4 octets for each mac address,
182 * so hard-code Freescale OUI (00:04:9f) here.
184 for (i = 0; i < 2; i++) {
186 mx28_fec_pdata[i].mac[0] = 0x00;
187 mx28_fec_pdata[i].mac[1] = 0x04;
188 mx28_fec_pdata[i].mac[2] = 0x9f;
189 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
190 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
191 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
197 pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
202 * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
204 static int flexcan0_en, flexcan1_en;
206 static void mx28evk_flexcan_switch(void)
208 if (flexcan0_en || flexcan1_en)
209 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
211 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
214 static void mx28evk_flexcan0_switch(int enable)
216 flexcan0_en = enable;
217 mx28evk_flexcan_switch();
220 static void mx28evk_flexcan1_switch(int enable)
222 flexcan1_en = enable;
223 mx28evk_flexcan_switch();
226 static const struct flexcan_platform_data
227 mx28evk_flexcan_pdata[] __initconst = {
229 .transceiver_switch = mx28evk_flexcan0_switch,
231 .transceiver_switch = mx28evk_flexcan1_switch,
236 static struct fb_videomode mx28evk_video_modes[] = {
238 .name = "Seiko-43WVF1G",
242 .pixclock = 29851, /* picosecond (33.5 MHz) */
249 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
250 FB_SYNC_DOTCLK_FAILING_ACT,
254 static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = {
255 .mode_list = mx28evk_video_modes,
256 .mode_count = ARRAY_SIZE(mx28evk_video_modes),
258 .ld_intf_width = STMLCDIF_24BIT,
261 static void __init mx28evk_init(void)
265 mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
271 if (mx28evk_fec_get_mac())
272 pr_warn("%s: failed on fec mac setup\n", __func__);
275 mx28_add_fec(0, &mx28_fec_pdata[0]);
276 mx28_add_fec(1, &mx28_fec_pdata[1]);
278 ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
281 pr_err("failed to request gpio flexcan-switch: %d\n", ret);
283 mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]);
284 mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
287 ret = gpio_request_one(MX28EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
289 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
291 gpio_set_value(MX28EVK_LCD_ENABLE, 1);
293 ret = gpio_request_one(MX28EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
295 pr_warn("failed to request gpio bl-enable: %d\n", ret);
297 gpio_set_value(MX28EVK_BL_ENABLE, 1);
299 mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
302 static void __init mx28evk_timer_init(void)
307 static struct sys_timer mx28evk_timer = {
308 .init = mx28evk_timer_init,
311 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
312 /* Maintainer: Freescale Semiconductor, Inc. */
313 .map_io = mx28_map_io,
314 .init_irq = mx28_init_irq,
315 .init_machine = mx28evk_init,
316 .timer = &mx28evk_timer,