2 * Copyright (C) 2000 Deep Blue Solutions Ltd
3 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
4 * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 #include <linux/gpio.h>
17 #include <linux/platform_device.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/map.h>
20 #include <linux/mtd/partitions.h>
21 #include <linux/mtd/physmap.h>
22 #include <linux/i2c.h>
23 #include <linux/irq.h>
24 #include <mach/common.h>
25 #include <mach/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/time.h>
29 #include <asm/mach/map.h>
30 #include <mach/iomux-mx27.h>
32 #include "devices-imx27.h"
35 * Base address of PBC controller, CS4
37 #define PBC_BASE_ADDRESS 0xf4300000
38 #define PBC_REG_ADDR(offset) (void __force __iomem *) \
39 (PBC_BASE_ADDRESS + (offset))
41 /* When the PBC address connection is fixed in h/w, defined as 1 */
44 /* Offsets for the PBC Controller register */
46 * PBC Board version register offset
48 #define PBC_VERSION_REG PBC_REG_ADDR(0x00000 >> PBC_ADDR_SH)
50 * PBC Board control register 1 set address.
52 #define PBC_BCTRL1_SET_REG PBC_REG_ADDR(0x00008 >> PBC_ADDR_SH)
54 * PBC Board control register 1 clear address.
56 #define PBC_BCTRL1_CLEAR_REG PBC_REG_ADDR(0x0000C >> PBC_ADDR_SH)
58 /* PBC Board Control Register 1 bit definitions */
59 #define PBC_BCTRL1_LCDON 0x0800 /* Enable the LCD */
61 /* to determine the correct external crystal reference */
62 #define CKIH_27MHZ_BIT_SET (1 << 3)
64 static const int mx27ads_pins[] __initconst = {
107 PD11_AOUT_FEC_TX_CLK,
110 PD14_AOUT_FEC_RX_CLK,
163 static const struct mxc_nand_platform_data
164 mx27ads_nand_board_info __initconst = {
169 /* ADS's NOR flash */
170 static struct physmap_flash_data mx27ads_flash_data = {
174 static struct resource mx27ads_flash_resource = {
176 .end = 0xc0000000 + 0x02000000 - 1,
177 .flags = IORESOURCE_MEM,
181 static struct platform_device mx27ads_nor_mtd_device = {
182 .name = "physmap-flash",
185 .platform_data = &mx27ads_flash_data,
188 .resource = &mx27ads_flash_resource,
191 static const struct imxi2c_platform_data mx27ads_i2c1_data __initconst = {
195 static struct i2c_board_info mx27ads_i2c_devices[] = {
198 void lcd_power(int on)
201 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
203 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
206 static struct imx_fb_videomode mx27ads_modes[] = {
209 .name = "Sharp-LQ035Q7",
213 .pixclock = 188679, /* in ps (5.3MHz) */
226 static const struct imx_fb_platform_data mx27ads_fb_data __initconst = {
227 .mode = mx27ads_modes,
228 .num_modes = ARRAY_SIZE(mx27ads_modes),
231 * - HSYNC active high
232 * - VSYNC active high
233 * - clk notenabled while idle
235 * - data not inverted
236 * - data enable low active
237 * - enable sharp mode
243 .lcd_power = lcd_power,
246 static int mx27ads_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
249 return request_irq(IRQ_GPIOE(21), detect_irq, IRQF_TRIGGER_RISING,
250 "sdhc1-card-detect", data);
253 static int mx27ads_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
256 return request_irq(IRQ_GPIOB(7), detect_irq, IRQF_TRIGGER_RISING,
257 "sdhc2-card-detect", data);
260 static void mx27ads_sdhc1_exit(struct device *dev, void *data)
262 free_irq(IRQ_GPIOE(21), data);
265 static void mx27ads_sdhc2_exit(struct device *dev, void *data)
267 free_irq(IRQ_GPIOB(7), data);
270 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
271 .init = mx27ads_sdhc1_init,
272 .exit = mx27ads_sdhc1_exit,
275 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
276 .init = mx27ads_sdhc2_init,
277 .exit = mx27ads_sdhc2_exit,
280 static struct platform_device *platform_devices[] __initdata = {
281 &mx27ads_nor_mtd_device,
284 static const struct imxuart_platform_data uart_pdata __initconst = {
285 .flags = IMXUART_HAVE_RTSCTS,
288 static void __init mx27ads_board_init(void)
292 mxc_gpio_setup_multiple_pins(mx27ads_pins, ARRAY_SIZE(mx27ads_pins),
295 imx27_add_imx_uart0(&uart_pdata);
296 imx27_add_imx_uart1(&uart_pdata);
297 imx27_add_imx_uart2(&uart_pdata);
298 imx27_add_imx_uart3(&uart_pdata);
299 imx27_add_imx_uart4(&uart_pdata);
300 imx27_add_imx_uart5(&uart_pdata);
301 imx27_add_mxc_nand(&mx27ads_nand_board_info);
303 /* only the i2c master 1 is used on this CPU card */
304 i2c_register_board_info(1, mx27ads_i2c_devices,
305 ARRAY_SIZE(mx27ads_i2c_devices));
306 imx27_add_imx_i2c(1, &mx27ads_i2c1_data);
307 imx27_add_imx_fb(&mx27ads_fb_data);
308 imx27_add_mxc_mmc(0, &sdhc1_pdata);
309 imx27_add_mxc_mmc(1, &sdhc2_pdata);
312 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
313 imx27_add_mxc_w1(NULL);
316 static void __init mx27ads_timer_init(void)
318 unsigned long fref = 26000000;
320 if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
323 mx27_clocks_init(fref);
326 static struct sys_timer mx27ads_timer = {
327 .init = mx27ads_timer_init,
330 static struct map_desc mx27ads_io_desc[] __initdata = {
332 .virtual = PBC_BASE_ADDRESS,
333 .pfn = __phys_to_pfn(MX27_CS4_BASE_ADDR),
339 static void __init mx27ads_map_io(void)
342 iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));
345 MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
346 /* maintainer: Freescale Semiconductor, Inc. */
347 .atag_offset = 0x100,
348 .map_io = mx27ads_map_io,
349 .init_early = imx27_init_early,
350 .init_irq = mx27_init_irq,
351 .handle_irq = imx27_handle_irq,
352 .timer = &mx27ads_timer,
353 .init_machine = mx27ads_board_init,
354 .restart = mxc_restart,