diff options
Diffstat (limited to 'arch/arm/mach-mx5/board-cpuimx51.c')
| -rw-r--r-- | arch/arm/mach-mx5/board-cpuimx51.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/board-cpuimx51.c b/arch/arm/mach-mx5/board-cpuimx51.c new file mode 100644 index 00000000000..623607a20f5 --- /dev/null +++ b/arch/arm/mach-mx5/board-cpuimx51.c @@ -0,0 +1,293 @@ +/* + * + * 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/imx-uart.h> +#include <mach/iomux-mx51.h> +#include <mach/i2c.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.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 = { + &mxc_fec_device, +#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) + &serial_device, +#endif +}; + +static struct pad_desc 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 struct imxuart_platform_data uart_pdata = { + .flags = IMXUART_HAVE_RTSCTS, +}; + +static struct imxi2c_platform_data eukrea_cpuimx51_i2c_data = { + .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)); + + mxc_register_device(&mxc_uart_device0, &uart_pdata); + 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); + + platform_add_devices(devices, ARRAY_SIZE(devices)); + + mxc_register_device(&mxc_i2c_device1, &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> */ + .phys_io = MX51_AIPS1_BASE_ADDR, + .io_pg_offst = ((MX51_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc, + .boot_params = PHYS_OFFSET + 0x100, + .map_io = mx51_map_io, + .init_irq = mx51_init_irq, + .init_machine = eukrea_cpuimx51_init, + .timer = &mxc_timer, +MACHINE_END |