| /* |
| * |
| * Copyright (C) 2010 Eric Bénard <eric@eukrea.com> |
| * |
| * based on board-mx51_babbage.c which is |
| * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved. |
| * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com> |
| * |
| * The code contained herein is licensed under the GNU General Public |
| * License. You may obtain a copy of the GNU General Public License |
| * Version 2 or later at the following locations: |
| * |
| * http://www.opensource.org/licenses/gpl-license.html |
| * http://www.gnu.org/copyleft/gpl.html |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/serial_8250.h> |
| #include <linux/i2c.h> |
| #include <linux/gpio.h> |
| #include <linux/delay.h> |
| #include <linux/io.h> |
| #include <linux/interrupt.h> |
| #include <linux/irq.h> |
| #include <linux/fsl_devices.h> |
| |
| #include <mach/eukrea-baseboards.h> |
| #include <mach/common.h> |
| #include <mach/hardware.h> |
| #include <mach/iomux-mx51.h> |
| #include <mach/mxc_ehci.h> |
| |
| #include <asm/irq.h> |
| #include <asm/setup.h> |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/time.h> |
| |
| #include "devices-imx51.h" |
| #include "devices.h" |
| |
| #define CPUIMX51_USBH1_STP (0*32 + 27) |
| #define CPUIMX51_QUARTA_GPIO (2*32 + 28) |
| #define CPUIMX51_QUARTB_GPIO (2*32 + 25) |
| #define CPUIMX51_QUARTC_GPIO (2*32 + 26) |
| #define CPUIMX51_QUARTD_GPIO (2*32 + 27) |
| #define CPUIMX51_QUARTA_IRQ (MXC_INTERNAL_IRQS + CPUIMX51_QUARTA_GPIO) |
| #define CPUIMX51_QUARTB_IRQ (MXC_INTERNAL_IRQS + CPUIMX51_QUARTB_GPIO) |
| #define CPUIMX51_QUARTC_IRQ (MXC_INTERNAL_IRQS + CPUIMX51_QUARTC_GPIO) |
| #define CPUIMX51_QUARTD_IRQ (MXC_INTERNAL_IRQS + CPUIMX51_QUARTD_GPIO) |
| #define CPUIMX51_QUART_XTAL 14745600 |
| #define CPUIMX51_QUART_REGSHIFT 17 |
| |
| /* USB_CTRL_1 */ |
| #define MX51_USB_CTRL_1_OFFSET 0x10 |
| #define MX51_USB_CTRL_UH1_EXT_CLK_EN (1 << 25) |
| |
| #define MX51_USB_PLLDIV_12_MHZ 0x00 |
| #define MX51_USB_PLL_DIV_19_2_MHZ 0x01 |
| #define MX51_USB_PLL_DIV_24_MHZ 0x02 |
| |
| #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) |
| static struct plat_serial8250_port serial_platform_data[] = { |
| { |
| .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x400000), |
| .irq = CPUIMX51_QUARTA_IRQ, |
| .irqflags = IRQF_TRIGGER_HIGH, |
| .uartclk = CPUIMX51_QUART_XTAL, |
| .regshift = CPUIMX51_QUART_REGSHIFT, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, |
| }, { |
| .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x800000), |
| .irq = CPUIMX51_QUARTB_IRQ, |
| .irqflags = IRQF_TRIGGER_HIGH, |
| .uartclk = CPUIMX51_QUART_XTAL, |
| .regshift = CPUIMX51_QUART_REGSHIFT, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, |
| }, { |
| .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x1000000), |
| .irq = CPUIMX51_QUARTC_IRQ, |
| .irqflags = IRQF_TRIGGER_HIGH, |
| .uartclk = CPUIMX51_QUART_XTAL, |
| .regshift = CPUIMX51_QUART_REGSHIFT, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, |
| }, { |
| .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x2000000), |
| .irq = CPUIMX51_QUARTD_IRQ, |
| .irqflags = IRQF_TRIGGER_HIGH, |
| .uartclk = CPUIMX51_QUART_XTAL, |
| .regshift = CPUIMX51_QUART_REGSHIFT, |
| .iotype = UPIO_MEM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, |
| }, { |
| } |
| }; |
| |
| static struct platform_device serial_device = { |
| .name = "serial8250", |
| .id = 0, |
| .dev = { |
| .platform_data = serial_platform_data, |
| }, |
| }; |
| #endif |
| |
| static struct platform_device *devices[] __initdata = { |
| #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) |
| &serial_device, |
| #endif |
| }; |
| |
| static iomux_v3_cfg_t eukrea_cpuimx51_pads[] = { |
| /* UART1 */ |
| MX51_PAD_UART1_RXD__UART1_RXD, |
| MX51_PAD_UART1_TXD__UART1_TXD, |
| MX51_PAD_UART1_RTS__UART1_RTS, |
| MX51_PAD_UART1_CTS__UART1_CTS, |
| |
| /* I2C2 */ |
| MX51_PAD_GPIO_1_2__I2C2_SCL, |
| MX51_PAD_GPIO_1_3__I2C2_SDA, |
| MX51_PAD_NANDF_D10__GPIO_3_30, |
| |
| /* QUART IRQ */ |
| MX51_PAD_NANDF_D15__GPIO_3_25, |
| MX51_PAD_NANDF_D14__GPIO_3_26, |
| MX51_PAD_NANDF_D13__GPIO_3_27, |
| MX51_PAD_NANDF_D12__GPIO_3_28, |
| |
| /* USB HOST1 */ |
| MX51_PAD_USBH1_CLK__USBH1_CLK, |
| MX51_PAD_USBH1_DIR__USBH1_DIR, |
| MX51_PAD_USBH1_NXT__USBH1_NXT, |
| MX51_PAD_USBH1_DATA0__USBH1_DATA0, |
| MX51_PAD_USBH1_DATA1__USBH1_DATA1, |
| MX51_PAD_USBH1_DATA2__USBH1_DATA2, |
| MX51_PAD_USBH1_DATA3__USBH1_DATA3, |
| MX51_PAD_USBH1_DATA4__USBH1_DATA4, |
| MX51_PAD_USBH1_DATA5__USBH1_DATA5, |
| MX51_PAD_USBH1_DATA6__USBH1_DATA6, |
| MX51_PAD_USBH1_DATA7__USBH1_DATA7, |
| MX51_PAD_USBH1_STP__USBH1_STP, |
| }; |
| |
| static const struct mxc_nand_platform_data |
| eukrea_cpuimx51_nand_board_info __initconst = { |
| .width = 1, |
| .hw_ecc = 1, |
| .flash_bbt = 1, |
| }; |
| |
| static const struct imxuart_platform_data uart_pdata __initconst = { |
| .flags = IMXUART_HAVE_RTSCTS, |
| }; |
| |
| static const |
| struct imxi2c_platform_data eukrea_cpuimx51_i2c_data __initconst = { |
| .bitrate = 100000, |
| }; |
| |
| static struct i2c_board_info eukrea_cpuimx51_i2c_devices[] = { |
| { |
| I2C_BOARD_INFO("pcf8563", 0x51), |
| }, |
| }; |
| |
| /* This function is board specific as the bit mask for the plldiv will also |
| be different for other Freescale SoCs, thus a common bitmask is not |
| possible and cannot get place in /plat-mxc/ehci.c.*/ |
| static int initialize_otg_port(struct platform_device *pdev) |
| { |
| u32 v; |
| void __iomem *usb_base; |
| void __iomem *usbother_base; |
| |
| usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K); |
| usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET; |
| |
| /* Set the PHY clock to 19.2MHz */ |
| v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET); |
| v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK; |
| v |= MX51_USB_PLL_DIV_19_2_MHZ; |
| __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET); |
| iounmap(usb_base); |
| return 0; |
| } |
| |
| static int initialize_usbh1_port(struct platform_device *pdev) |
| { |
| u32 v; |
| void __iomem *usb_base; |
| void __iomem *usbother_base; |
| |
| usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K); |
| usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET; |
| |
| /* The clock for the USBH1 ULPI port will come externally from the PHY. */ |
| v = __raw_readl(usbother_base + MX51_USB_CTRL_1_OFFSET); |
| __raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN, usbother_base + MX51_USB_CTRL_1_OFFSET); |
| iounmap(usb_base); |
| return 0; |
| } |
| |
| static struct mxc_usbh_platform_data dr_utmi_config = { |
| .init = initialize_otg_port, |
| .portsc = MXC_EHCI_UTMI_16BIT, |
| .flags = MXC_EHCI_INTERNAL_PHY, |
| }; |
| |
| static struct fsl_usb2_platform_data usb_pdata = { |
| .operating_mode = FSL_USB2_DR_DEVICE, |
| .phy_mode = FSL_USB2_PHY_UTMI_WIDE, |
| }; |
| |
| static struct mxc_usbh_platform_data usbh1_config = { |
| .init = initialize_usbh1_port, |
| .portsc = MXC_EHCI_MODE_ULPI, |
| .flags = (MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_ITC_NO_THRESHOLD), |
| }; |
| |
| static int otg_mode_host; |
| |
| static int __init eukrea_cpuimx51_otg_mode(char *options) |
| { |
| if (!strcmp(options, "host")) |
| otg_mode_host = 1; |
| else if (!strcmp(options, "device")) |
| otg_mode_host = 0; |
| else |
| pr_info("otg_mode neither \"host\" nor \"device\". " |
| "Defaulting to device\n"); |
| return 0; |
| } |
| __setup("otg_mode=", eukrea_cpuimx51_otg_mode); |
| |
| /* |
| * Board specific initialization. |
| */ |
| static void __init eukrea_cpuimx51_init(void) |
| { |
| mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51_pads, |
| ARRAY_SIZE(eukrea_cpuimx51_pads)); |
| |
| imx51_add_imx_uart(0, &uart_pdata); |
| imx51_add_mxc_nand(&eukrea_cpuimx51_nand_board_info); |
| |
| gpio_request(CPUIMX51_QUARTA_GPIO, "quarta_irq"); |
| gpio_direction_input(CPUIMX51_QUARTA_GPIO); |
| gpio_free(CPUIMX51_QUARTA_GPIO); |
| gpio_request(CPUIMX51_QUARTB_GPIO, "quartb_irq"); |
| gpio_direction_input(CPUIMX51_QUARTB_GPIO); |
| gpio_free(CPUIMX51_QUARTB_GPIO); |
| gpio_request(CPUIMX51_QUARTC_GPIO, "quartc_irq"); |
| gpio_direction_input(CPUIMX51_QUARTC_GPIO); |
| gpio_free(CPUIMX51_QUARTC_GPIO); |
| gpio_request(CPUIMX51_QUARTD_GPIO, "quartd_irq"); |
| gpio_direction_input(CPUIMX51_QUARTD_GPIO); |
| gpio_free(CPUIMX51_QUARTD_GPIO); |
| |
| imx51_add_fec(NULL); |
| platform_add_devices(devices, ARRAY_SIZE(devices)); |
| |
| imx51_add_imx_i2c(1, &eukrea_cpuimx51_i2c_data); |
| i2c_register_board_info(1, eukrea_cpuimx51_i2c_devices, |
| ARRAY_SIZE(eukrea_cpuimx51_i2c_devices)); |
| |
| if (otg_mode_host) |
| mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config); |
| else { |
| initialize_otg_port(NULL); |
| mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata); |
| } |
| mxc_register_device(&mxc_usbh1_device, &usbh1_config); |
| |
| #ifdef CONFIG_MACH_EUKREA_MBIMX51_BASEBOARD |
| eukrea_mbimx51_baseboard_init(); |
| #endif |
| } |
| |
| static void __init eukrea_cpuimx51_timer_init(void) |
| { |
| mx51_clocks_init(32768, 24000000, 22579200, 0); |
| } |
| |
| static struct sys_timer mxc_timer = { |
| .init = eukrea_cpuimx51_timer_init, |
| }; |
| |
| MACHINE_START(EUKREA_CPUIMX51, "Eukrea CPUIMX51 Module") |
| /* Maintainer: Eric Bénard <eric@eukrea.com> */ |
| .boot_params = MX51_PHYS_OFFSET + 0x100, |
| .map_io = mx51_map_io, |
| .init_irq = mx51_init_irq, |
| .init_machine = eukrea_cpuimx51_init, |
| .timer = &mxc_timer, |
| MACHINE_END |