i.MX51: add support for cpuimx51 module and its baseboard
CPUIMX51 is build around Freescale's i.MX515 and has up to
512MB of RAM, NAND Flash, Ethernet, USB Host with 4 ports
hub, USB OTG, ST16554 Quad UART on nCS1, I2C RTC ...
MBIMX51 adds LEDS, Keypad, TSC2007 touchscreen controler ...
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx5/board-cpuimx51.c b/arch/arm/mach-mx5/board-cpuimx51.c
new file mode 100644
index 0000000..623607a
--- /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