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linux/arch/arm/mach-mx5/board-cpuimx51.c
Sascha Hauer 4bd597b633 ARM i.MX ehci: do ehci init in board specific functions 
The mxc-ehci driver calls SoC specific phy initialization right after
calling board specific initialization. To offer greater flexibility for
boards to setup the phy and to get rid of some unnecessary flags in
platform data this patch lets the boards call the SoC specific phy
initialization and remove it from the driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-02-11 08:40:45 +01:00

307 lines
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/*
*
* 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 IMX_GPIO_NR(1, 27)
#define CPUIMX51_QUARTA_GPIO IMX_GPIO_NR(3, 28)
#define CPUIMX51_QUARTB_GPIO IMX_GPIO_NR(3, 25)
#define CPUIMX51_QUARTC_GPIO IMX_GPIO_NR(3, 26)
#define CPUIMX51_QUARTD_GPIO IMX_GPIO_NR(3, 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
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,
},
};
static struct platform_device *devices[] __initdata = {
&serial_device,
};
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_GPIO1_2__I2C2_SCL,
MX51_PAD_GPIO1_3__I2C2_SDA,
MX51_PAD_NANDF_D10__GPIO3_30,
/* QUART IRQ */
MX51_PAD_NANDF_D15__GPIO3_25,
MX51_PAD_NANDF_D14__GPIO3_26,
MX51_PAD_NANDF_D13__GPIO3_27,
MX51_PAD_NANDF_D12__GPIO3_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);
if (!usb_base)
return -ENOMEM;
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);
mdelay(10);
return mx51_initialize_usb_hw(0, MXC_EHCI_INTERNAL_PHY);
}
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);
if (!usb_base)
return -ENOMEM;
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);
mdelay(10);
return mx51_initialize_usb_hw(1, MXC_EHCI_POWER_PINS_ENABLED |
MXC_EHCI_ITC_NO_THRESHOLD);
}
static struct mxc_usbh_platform_data dr_utmi_config = {
.init = initialize_otg_port,
.portsc = MXC_EHCI_UTMI_16BIT,
};
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,
};
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_early = imx51_init_early,
.init_irq = mx51_init_irq,
.timer = &mxc_timer,
.init_machine = eukrea_cpuimx51_init,
MACHINE_END
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