arch/arm/mach-imx/imx27-dt.c

   1 /*
   2  * Copyright 2012 Sascha Hauer, Pengutronix
   3  *
   4  * The code contained herein is licensed under the GNU General Public
   5  * License. You may obtain a copy of the GNU General Public License
   6  * Version 2 or later at the following locations:
   7  *
   8  * http://www.opensource.org/licenses/gpl-license.html
   9  * http://www.gnu.org/copyleft/gpl.html
  10  */
  11
  12 #include <linux/irq.h>
  13 #include <linux/irqdomain.h>
  14 #include <linux/of_irq.h>
  15 #include <linux/of_platform.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/mach/time.h>
  18 #include <mach/common.h>
  19 #include <mach/mx27.h>
  20
  21 static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = {
  22         OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART1_BASE_ADDR, "imx21-uart.0", NULL),
  23         OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART2_BASE_ADDR, "imx21-uart.1", NULL),
  24         OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART3_BASE_ADDR, "imx21-uart.2", NULL),
  25         OF_DEV_AUXDATA("fsl,imx27-fec", MX27_FEC_BASE_ADDR, "imx27-fec.0", NULL),
  26         OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
  27         OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
  28         OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI1_BASE_ADDR, "imx27-cspi.0", NULL),
  29         OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI2_BASE_ADDR, "imx27-cspi.1", NULL),
  30         OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI3_BASE_ADDR, "imx27-cspi.2", NULL),
  31         OF_DEV_AUXDATA("fsl,imx27-wdt", MX27_WDOG_BASE_ADDR, "imx2-wdt.0", NULL),
  32         OF_DEV_AUXDATA("fsl,imx27-nand", MX27_NFC_BASE_ADDR, "mxc_nand.0", NULL),
  33         { /* sentinel */ }
  34 };
  35
  36 static int __init imx27_avic_add_irq_domain(struct device_node *np,
  37                                 struct device_node *interrupt_parent)
  38 {
  39         irq_domain_add_legacy(np, 64, 0, 0, &irq_domain_simple_ops, NULL);
  40         return 0;
  41 }
  42
  43 static const struct of_device_id imx27_irq_match[] __initconst = {
  44         { .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
  45         { /* sentinel */ }
  46 };
  47
  48 static void __init imx27_dt_init(void)
  49 {
  50         of_irq_init(imx27_irq_match);
  51
  52         of_platform_populate(NULL, of_default_bus_match_table,
  53                              imx27_auxdata_lookup, NULL);
  54 }
  55
  56 static void __init imx27_timer_init(void)
  57 {
  58         mx27_clocks_init_dt();
  59 }
  60
  61 static struct sys_timer imx27_timer = {
  62         .init = imx27_timer_init,
  63 };
  64
  65 static const char *imx27_dt_board_compat[] __initdata = {
  66         "fsl,imx27",
  67         NULL
  68 };
  69
  70 DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
  71         .map_io         = mx27_map_io,
  72         .init_early     = imx27_init_early,
  73         .init_irq       = mx27_init_irq,
  74         .handle_irq     = imx27_handle_irq,
  75         .timer          = &imx27_timer,
  76         .init_machine   = imx27_dt_init,
  77         .dt_compat      = imx27_dt_board_compat,
  78         .restart        = mxc_restart,
  79 MACHINE_END