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(gpio_to_irq(IMX_GPIO_NR(5, 21)), detect_irq
,
250 IRQF_TRIGGER_RISING
, "sdhc1-card-detect", data
);
253 static int mx27ads_sdhc2_init(struct device
*dev
, irq_handler_t detect_irq
,
256 return request_irq(gpio_to_irq(IMX_GPIO_NR(2, 7)), detect_irq
,
257 IRQF_TRIGGER_RISING
, "sdhc2-card-detect", data
);
260 static void mx27ads_sdhc1_exit(struct device
*dev
, void *data
)
262 free_irq(gpio_to_irq(IMX_GPIO_NR(5, 21)), data
);
265 static void mx27ads_sdhc2_exit(struct device
*dev
, void *data
)
267 free_irq(gpio_to_irq(IMX_GPIO_NR(2, 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
));
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
,