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linux/arch/arm/mach-mx2/mx27ads.c
Juergen Beisert 80eedae6f0 i.MX27: Add ADS platform support 
This patch adds basic support for the Freescale MX27ADS reference board.
Currently only a serial console can be used.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
2008-07-05 10:03:00 +02:00

304 lines
7.2 KiB
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/*
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <asm/arch/common.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <asm/arch/gpio.h>
#include <asm/arch/imx-uart.h>
#include <asm/arch/iomux-mx1-mx2.h>
#include <asm/arch/board-mx27ads.h>
/* ADS's NOR flash */
static struct physmap_flash_data mx27ads_flash_data = {
.width = 2,
};
static struct resource mx27ads_flash_resource = {
.start = 0xc0000000,
.end = 0xc0000000 + 0x02000000 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device mx27ads_nor_mtd_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &mx27ads_flash_data,
},
.num_resources = 1,
.resource = &mx27ads_flash_resource,
};
static int mxc_uart0_pins[] = {
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS
};
static int uart_mxc_port0_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart0_pins,
ARRAY_SIZE(mxc_uart0_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART0");
}
static int uart_mxc_port0_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart0_pins,
ARRAY_SIZE(mxc_uart0_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART0");
}
static int mxc_uart1_pins[] = {
PE3_PF_UART2_CTS,
PE4_PF_UART2_RTS,
PE6_PF_UART2_TXD,
PE7_PF_UART2_RXD
};
static int uart_mxc_port1_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
ARRAY_SIZE(mxc_uart1_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART1");
}
static int uart_mxc_port1_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
ARRAY_SIZE(mxc_uart1_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART1");
}
static int mxc_uart2_pins[] = {
PE8_PF_UART3_TXD,
PE9_PF_UART3_RXD,
PE10_PF_UART3_CTS,
PE11_PF_UART3_RTS
};
static int uart_mxc_port2_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
ARRAY_SIZE(mxc_uart2_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART2");
}
static int uart_mxc_port2_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
ARRAY_SIZE(mxc_uart2_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART2");
}
static int mxc_uart3_pins[] = {
PB26_AF_UART4_RTS,
PB28_AF_UART4_TXD,
PB29_AF_UART4_CTS,
PB31_AF_UART4_RXD
};
static int uart_mxc_port3_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart3_pins,
ARRAY_SIZE(mxc_uart3_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART3");
}
static int uart_mxc_port3_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart3_pins,
ARRAY_SIZE(mxc_uart3_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART3");
}
static int mxc_uart4_pins[] = {
PB18_AF_UART5_TXD,
PB19_AF_UART5_RXD,
PB20_AF_UART5_CTS,
PB21_AF_UART5_RTS
};
static int uart_mxc_port4_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart4_pins,
ARRAY_SIZE(mxc_uart4_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART4");
}
static int uart_mxc_port4_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart4_pins,
ARRAY_SIZE(mxc_uart4_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART4");
}
static int mxc_uart5_pins[] = {
PB10_AF_UART6_TXD,
PB12_AF_UART6_CTS,
PB11_AF_UART6_RXD,
PB13_AF_UART6_RTS
};
static int uart_mxc_port5_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart5_pins,
ARRAY_SIZE(mxc_uart5_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "UART5");
}
static int uart_mxc_port5_exit(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart5_pins,
ARRAY_SIZE(mxc_uart5_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "UART5");
}
static struct platform_device *platform_devices[] __initdata = {
&mx27ads_nor_mtd_device,
};
static int mxc_fec_pins[] = {
PD0_AIN_FEC_TXD0,
PD1_AIN_FEC_TXD1,
PD2_AIN_FEC_TXD2,
PD3_AIN_FEC_TXD3,
PD4_AOUT_FEC_RX_ER,
PD5_AOUT_FEC_RXD1,
PD6_AOUT_FEC_RXD2,
PD7_AOUT_FEC_RXD3,
PD8_AF_FEC_MDIO,
PD9_AIN_FEC_MDC,
PD10_AOUT_FEC_CRS,
PD11_AOUT_FEC_TX_CLK,
PD12_AOUT_FEC_RXD0,
PD13_AOUT_FEC_RX_DV,
PD14_AOUT_FEC_CLR,
PD15_AOUT_FEC_COL,
PD16_AIN_FEC_TX_ER,
PF23_AIN_FEC_TX_EN
};
static void gpio_fec_active(void)
{
mxc_gpio_setup_multiple_pins(mxc_fec_pins,
ARRAY_SIZE(mxc_fec_pins),
MXC_GPIO_ALLOC_MODE_NORMAL, "FEC");
}
static void gpio_fec_inactive(void)
{
mxc_gpio_setup_multiple_pins(mxc_fec_pins,
ARRAY_SIZE(mxc_fec_pins),
MXC_GPIO_ALLOC_MODE_RELEASE, "FEC");
}
static struct imxuart_platform_data uart_pdata[] = {
{
.init = uart_mxc_port0_init,
.exit = uart_mxc_port0_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart_mxc_port1_init,
.exit = uart_mxc_port1_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart_mxc_port2_init,
.exit = uart_mxc_port2_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart_mxc_port3_init,
.exit = uart_mxc_port3_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart_mxc_port4_init,
.exit = uart_mxc_port4_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart_mxc_port5_init,
.exit = uart_mxc_port5_exit,
.flags = IMXUART_HAVE_RTSCTS,
},
};
static void __init mx27ads_board_init(void)
{
int i;
gpio_fec_active();
for (i = 0; i < 6; i++)
imx_init_uart(i, &uart_pdata[i]);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}
static void __init mx27ads_timer_init(void)
{
unsigned long fref = 26000000;
if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
fref = 27000000;
mxc_clocks_init(fref);
mxc_timer_init("gpt_clk.0");
}
struct sys_timer mx27ads_timer = {
.init = mx27ads_timer_init,
};
static struct map_desc mx27ads_io_desc[] __initdata = {
{
.virtual = PBC_BASE_ADDRESS,
.pfn = __phys_to_pfn(CS4_BASE_ADDR),
.length = SZ_1M,
.type = MT_DEVICE,
},
};
void __init mx27ads_map_io(void)
{
mxc_map_io();
iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));
}
MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
/* maintainer: Freescale Semiconductor, Inc. */
.phys_io = AIPI_BASE_ADDR,
.io_pg_offst = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x100,
.map_io = mx27ads_map_io,
.init_irq = mxc_init_irq,
.init_machine = mx27ads_board_init,
.timer = &mx27ads_timer,
MACHINE_END
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