arm/imx6q: add device tree machine support

It adds generic device tree based machine support for imx6q.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

4 files changed, 99 insertions, 2 deletions

diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index f1098507a88..994ae82ca28 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -70,4 +70,4 @@ AFLAGS_head-v7.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SMP) += platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
 obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
-obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o
+obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
new file mode 100644
index 00000000000..8bf5fa34948
--- /dev/null
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * 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/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
+
+static void __init imx6q_init_machine(void)
+{
+        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+        imx6q_pm_init();
+}
+
+static void __init imx6q_map_io(void)
+{
+        imx_lluart_map_io();
+        imx_scu_map_io();
+}
+
+static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
+                                struct device_node *interrupt_parent)
+{
+        static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS -
+                                   32 * 7; /* imx6q gets 7 gpio ports */
+
+        irq_domain_add_simple(np, gpio_irq_base);
+        gpio_irq_base += 32;
+}
+
+static const struct of_device_id imx6q_irq_match[] __initconst = {
+        { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+        { .compatible = "fsl,imx6q-gpio", .data = imx6q_gpio_add_irq_domain, },
+        { /* sentinel */ }
+};
+
+static void __init imx6q_init_irq(void)
+{
+        l2x0_of_init(0, ~0UL);
+        imx_src_init();
+        imx_gpc_init();
+        of_irq_init(imx6q_irq_match);
+}
+
+static void __init imx6q_timer_init(void)
+{
+        mx6q_clocks_init();
+}
+
+static struct sys_timer imx6q_timer = {
+        .init = imx6q_timer_init,
+};
+
+static const char *imx6q_dt_compat[] __initdata = {
+        "fsl,imx6q-sabreauto",
+        NULL,
+};
+
+DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)")
+        .map_io         = imx6q_map_io,
+        .init_irq       = imx6q_init_irq,
+        .handle_irq     = imx6q_handle_irq,
+        .timer          = &imx6q_timer,
+        .init_machine   = imx6q_init_machine,
+        .dt_compat      = imx6q_dt_compat,
+MACHINE_END
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 88633fe01a5..c3ce146e29f 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -822,7 +822,7 @@ config CACHE_L2X0
                    REALVIEW_EB_A9MP || SOC_IMX35 || SOC_IMX31 || MACH_REALVIEW_PBX || \
                    ARCH_NOMADIK || ARCH_OMAP4 || ARCH_EXYNOS4 || ARCH_TEGRA || \
                    ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE || \
-                   ARCH_PRIMA2 || ARCH_ZYNQ || ARCH_CNS3XXX
+                   ARCH_PRIMA2 || ARCH_ZYNQ || ARCH_CNS3XXX || ARCH_MX6
         default y
         select OUTER_CACHE
         select OUTER_CACHE_SYNC
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 6340df2284d..607b4623af0 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -64,6 +64,7 @@ extern int mx51_clocks_init(unsigned long ckil, unsigned long osc,
                         unsigned long ckih1, unsigned long ckih2);
 extern int mx53_clocks_init(unsigned long ckil, unsigned long osc,
                         unsigned long ckih1, unsigned long ckih2);
+extern int mx6q_clocks_init(void);
 extern struct platform_device *mxc_register_gpio(char *name, int id,
         resource_size_t iobase, resource_size_t iosize, int irq, int irq_high);
 extern void mxc_set_cpu_type(unsigned int type);
@@ -101,7 +102,19 @@ void gic_handle_irq(struct pt_regs *);
 
 extern void imx_enable_cpu(int cpu, bool enable);
 extern void imx_set_cpu_jump(int cpu, void *jump_addr);
+#ifdef CONFIG_DEBUG_LL
+extern void imx_lluart_map_io(void);
+#else
+static inline void imx_lluart_map_io(void) {}
+#endif
 #ifdef CONFIG_SMP
 extern void v7_secondary_startup(void);
+extern void imx_scu_map_io(void);
+#else
+static inline void imx_scu_map_io(void) {}
 #endif
+extern void imx_enable_cpu(int cpu, bool enable);
+extern void imx_set_cpu_jump(int cpu, void *jump_addr);
+extern void imx_src_init(void);
+extern void imx_gpc_init(void);
 #endif