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authorShawn Guo <shawn.guo@linaro.org>2011-09-06 15:05:25 +0800
committerArnd Bergmann <arnd@arndb.de>2011-10-31 14:26:26 +0100
commit13eed9897a2160272df2804ac3bbd4d91c76e577 (patch)
treec61e32126f0d0202793bcbcb1285bf7a50be3806
parent69c31b7a6e9cd4654ed0bfc7e70b4d7076a5cdb3 (diff)
downloadop-kernel-dev-13eed9897a2160272df2804ac3bbd4d91c76e577.zip
op-kernel-dev-13eed9897a2160272df2804ac3bbd4d91c76e577.tar.gz
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>
-rw-r--r--arch/arm/mach-imx/Makefile2
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c84
-rw-r--r--arch/arm/mm/Kconfig2
-rw-r--r--arch/arm/plat-mxc/include/mach/common.h13
4 files changed, 99 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index f109850..994ae82 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 0000000..8bf5fa3
--- /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 88633fe..c3ce146 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 6340df2..607b462 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
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