2 * linux/arch/arm/mach-pxa/gumstix.c
4 * Support for the Gumstix motherboards.
6 * Original Author: Craig Hughes
7 * Created: Feb 14, 2008
8 * Copyright: Craig Hughes
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * Implemented based on lubbock.c by Nicolas Pitre and code from Craig
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/platform_device.h>
22 #include <linux/interrupt.h>
23 #include <linux/delay.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/gpio.h>
27 #include <linux/err.h>
28 #include <linux/clk.h>
30 #include <asm/setup.h>
31 #include <asm/memory.h>
32 #include <asm/mach-types.h>
33 #include <mach/hardware.h>
35 #include <asm/sizes.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/flash.h>
43 #include <mach/gumstix.h>
45 #include <mach/pxa-regs.h>
46 #include <mach/pxa2xx-regs.h>
47 #include <mach/mfp-pxa25x.h>
51 static struct resource flash_resource = {
54 .flags = IORESOURCE_MEM,
57 static struct mtd_partition gumstix_partitions[] = {
62 .mask_flags = MTD_WRITEABLE /* force read-only */
65 .size = MTDPART_SIZ_FULL,
66 .offset = MTDPART_OFS_APPEND
70 static struct flash_platform_data gumstix_flash_data = {
71 .map_name = "cfi_probe",
72 .parts = gumstix_partitions,
73 .nr_parts = ARRAY_SIZE(gumstix_partitions),
77 static struct platform_device gumstix_flash_device = {
78 .name = "pxa2xx-flash",
81 .platform_data = &gumstix_flash_data,
83 .resource = &flash_resource,
87 static struct platform_device *devices[] __initdata = {
88 &gumstix_flash_device,
92 static struct pxamci_platform_data gumstix_mci_platform_data = {
93 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
96 static void __init gumstix_mmc_init(void)
98 pxa_set_mci_info(&gumstix_mci_platform_data);
101 static void __init gumstix_mmc_init(void)
103 pr_debug("Gumstix mmc disabled\n");
107 #ifdef CONFIG_USB_GADGET_PXA25X
108 static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
109 .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
110 .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
113 static void __init gumstix_udc_init(void)
115 pxa_set_udc_info(&gumstix_udc_info);
118 static void gumstix_udc_init(void)
120 pr_debug("Gumstix udc is disabled\n");
125 /* Normally, the bootloader would have enabled this 32kHz clock but many
126 ** boards still have u-boot 1.1.4 so we check if it has been turned on and
127 ** if not, we turn it on with a warning message. */
128 static void gumstix_setup_bt_clock(void)
132 if (!(OSCC & OSCC_OOK))
133 pr_warning("32kHz clock was not on. Bootloader may need to "
145 pr_err("Failed to start 32kHz clock\n");
148 static void __init gumstix_bluetooth_init(void)
152 gumstix_setup_bt_clock();
154 err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST");
156 pr_err("gumstix: failed request gpio for bluetooth reset\n");
160 err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1);
162 pr_err("gumstix: can't reset bluetooth\n");
165 gpio_set_value(GPIO_GUMSTIX_BTRESET, 0);
167 gpio_set_value(GPIO_GUMSTIX_BTRESET, 1);
170 static void gumstix_bluetooth_init(void)
172 pr_debug("Gumstix Bluetooth is disabled\n");
176 static unsigned long gumstix_pin_config[] __initdata = {
189 int __attribute__((weak)) am200_init(void)
194 static void __init carrier_board_init(void)
197 * put carrier/expansion board init here if
198 * they cannot be detected programatically
203 static void __init gumstix_init(void)
205 pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
207 gumstix_bluetooth_init();
210 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
211 carrier_board_init();
214 MACHINE_START(GUMSTIX, "Gumstix")
215 .phys_io = 0x40000000,
216 .boot_params = 0xa0000100, /* match u-boot bi_boot_params */
217 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
218 .map_io = pxa_map_io,
219 .init_irq = pxa25x_init_irq,
221 .init_machine = gumstix_init,