arch/arm/mach-imx/mach-imx6q.c

   1 /*
   2  * Copyright 2011 Freescale Semiconductor, Inc.
   3  * Copyright 2011 Linaro Ltd.
   4  *
   5  * The code contained herein is licensed under the GNU General Public
   6  * License. You may obtain a copy of the GNU General Public License
   7  * Version 2 or later at the following locations:
   8  *
   9  * http://www.opensource.org/licenses/gpl-license.html
  10  * http://www.gnu.org/copyleft/gpl.html
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/irq.h>
  15 #include <linux/irqdomain.h>
  16 #include <linux/of.h>
  17 #include <linux/of_irq.h>
  18 #include <linux/of_platform.h>
  19 #include <asm/hardware/cache-l2x0.h>
  20 #include <asm/hardware/gic.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/time.h>
  23 #include <mach/common.h>
  24 #include <mach/hardware.h>
  25
  26 static void __init imx6q_init_machine(void)
  27 {
  28         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  29
  30         imx6q_pm_init();
  31 }
  32
  33 static void __init imx6q_map_io(void)
  34 {
  35         imx_lluart_map_io();
  36         imx_scu_map_io();
  37 }
  38
  39 static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
  40                                 struct device_node *interrupt_parent)
  41 {
  42         static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS -
  43                                    32 * 7; /* imx6q gets 7 gpio ports */
  44
  45         irq_domain_add_simple(np, gpio_irq_base);
  46         gpio_irq_base += 32;
  47 }
  48
  49 static const struct of_device_id imx6q_irq_match[] __initconst = {
  50         { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
  51         { .compatible = "fsl,imx6q-gpio", .data = imx6q_gpio_add_irq_domain, },
  52         { /* sentinel */ }
  53 };
  54
  55 static void __init imx6q_init_irq(void)
  56 {
  57         l2x0_of_init(0, ~0UL);
  58         imx_src_init();
  59         imx_gpc_init();
  60         of_irq_init(imx6q_irq_match);
  61 }
  62
  63 static void __init imx6q_timer_init(void)
  64 {
  65         mx6q_clocks_init();
  66 }
  67
  68 static struct sys_timer imx6q_timer = {
  69         .init = imx6q_timer_init,
  70 };
  71
  72 static const char *imx6q_dt_compat[] __initdata = {
  73         "fsl,imx6q-sabreauto",
  74         NULL,
  75 };
  76
  77 DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)")
  78         .map_io         = imx6q_map_io,
  79         .init_irq       = imx6q_init_irq,
  80         .handle_irq     = imx6q_handle_irq,
  81         .timer          = &imx6q_timer,
  82         .init_machine   = imx6q_init_machine,
  83         .dt_compat      = imx6q_dt_compat,
  84 MACHINE_END