146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* Copyright (C) 2007 Sascha Hauer, Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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*/
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#include <common.h>
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#include <net.h>
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#include <init.h>
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#include <environment.h>
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#include <mach/imx27-regs.h>
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#include <fec.h>
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#include <gpio.h>
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#include <sizes.h>
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#include <asm/armlinux.h>
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#include <asm/sections.h>
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#include <generated/mach-types.h>
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#include <partition.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <nand.h>
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#include <spi/spi.h>
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#include <io.h>
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#include <mach/imx-nand.h>
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#include <mach/imx-pll.h>
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#include <mach/imxfb.h>
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#include <gpio.h>
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#include <asm/mmu.h>
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#include <usb/ulpi.h>
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#include <mach/bbu.h>
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#include <mach/iomux-mx27.h>
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#include <mach/devices-imx27.h>
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static void pca100_usb_register(void)
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{
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mdelay(10);
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gpio_direction_output(GPIO_PORTB + 24, 0);
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gpio_direction_output(GPIO_PORTB + 23, 0);
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mdelay(10);
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ulpi_setup((void *)(MX27_USB_OTG_BASE_ADDR + 0x170), 1);
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add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, MX27_USB_OTG_BASE_ADDR, NULL);
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ulpi_setup((void *)(MX27_USB_OTG_BASE_ADDR + 0x570), 1);
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add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, MX27_USB_OTG_BASE_ADDR + 0x400, NULL);
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}
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static void pca100_usb_init(void)
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{
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u32 reg;
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reg = readl(MX27_USB_OTG_BASE_ADDR + 0x600);
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reg &= ~((3 << 21) | 1);
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reg |= (1 << 5) | (1 << 16) | (1 << 19) | (1 << 11) | (1 << 20);
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writel(reg, MX27_USB_OTG_BASE_ADDR + 0x600);
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/*
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* switch usbotg and usbh2 to ulpi mode. Do this *before*
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* the iomux setup to prevent funny hardware bugs from
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* triggering. Also, do this even when USB support is
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* disabled to give Linux USB support a good start.
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*/
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reg = readl(MX27_USB_OTG_BASE_ADDR + 0x584);
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reg &= ~(3 << 30);
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reg |= 2 << 30;
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writel(reg, MX27_USB_OTG_BASE_ADDR + 0x584);
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reg = readl(MX27_USB_OTG_BASE_ADDR + 0x184);
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reg &= ~(3 << 30);
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reg |= 2 << 30;
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writel(reg, MX27_USB_OTG_BASE_ADDR + 0x184);
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/* disable the usb phys */
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imx_gpio_mode((GPIO_PORTB | 23) | GPIO_GPIO | GPIO_IN);
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gpio_direction_output(GPIO_PORTB + 23, 1);
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imx_gpio_mode((GPIO_PORTB | 24) | GPIO_GPIO | GPIO_IN);
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gpio_direction_output(GPIO_PORTB + 24, 1);
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}
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static int pca100_devices_init(void)
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{
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int i;
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unsigned int mode[] = {
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/* USB host 2 */
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PA0_PF_USBH2_CLK,
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PA1_PF_USBH2_DIR,
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PA2_PF_USBH2_DATA7,
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PA3_PF_USBH2_NXT,
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PA4_PF_USBH2_STP,
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PD19_AF_USBH2_DATA4,
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PD20_AF_USBH2_DATA3,
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PD21_AF_USBH2_DATA6,
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PD22_AF_USBH2_DATA0,
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PD23_AF_USBH2_DATA2,
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PD24_AF_USBH2_DATA1,
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PD26_AF_USBH2_DATA5,
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PC7_PF_USBOTG_DATA5,
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PC8_PF_USBOTG_DATA6,
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PC9_PF_USBOTG_DATA0,
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PC10_PF_USBOTG_DATA2,
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PC11_PF_USBOTG_DATA1,
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PC12_PF_USBOTG_DATA4,
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PC13_PF_USBOTG_DATA3,
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PE0_PF_USBOTG_NXT,
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PE1_PF_USBOTG_STP,
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PE2_PF_USBOTG_DIR,
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PE24_PF_USBOTG_CLK,
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PE25_PF_USBOTG_DATA7,
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};
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if (!of_machine_is_compatible("phytec,imx27-pca100"))
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return 0;
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barebox_set_model("Phytec phyCARD-i.MX27");
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barebox_set_hostname("phycard-imx27");
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pca100_usb_init();
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/* initizalize gpios */
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for (i = 0; i < ARRAY_SIZE(mode); i++)
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imx_gpio_mode(mode[i]);
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if (IS_ENABLED(CONFIG_USB))
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pca100_usb_register();
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imx_bbu_external_nand_register_handler("nand", "/dev/nand0.boot",
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BBU_HANDLER_FLAG_DEFAULT);
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armlinux_set_architecture(2149);
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return 0;
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}
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device_initcall(pca100_devices_init);
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