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>

3 files changed, 313 insertions, 0 deletions

diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 6e7d724..6f98355 100644
--- a/arch/arm/mach-mx2/Kconfig
+++ b/arch/arm/mach-mx2/Kconfig
@@ -9,3 +9,10 @@ config MACH_MX27
 
 comment "MX2 Platforms"
 	depends on ARCH_MX2
+
+config MACH_MX27ADS
+	bool "MX27ADS platform"
+	depends on MACH_MX27
+	help
+	  Include support for MX27ADS platform. This includes specific
+	  configurations for the board and its peripherals.
diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
index 74fb9b3..f6764eb 100644
--- a/arch/arm/mach-mx2/Makefile
+++ b/arch/arm/mach-mx2/Makefile
@@ -8,3 +8,5 @@ obj-y	:=  system.o generic.o devices.o serial.o
 
 obj-$(CONFIG_MACH_MX27) += cpu_imx27.o
 obj-$(CONFIG_MACH_MX27) += clock_imx27.o
+
+obj-$(CONFIG_MACH_MX27ADS) += mx27ads.o
diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c
new file mode 100644
index 0000000..a9ff01f
--- /dev/null
+++ b/arch/arm/mach-mx2/mx27ads.c
@@ -0,0 +1,304 @@
+/*
+ *  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
+