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-rw-r--r--arch/arm/mach-imx/Kconfig8
-rw-r--r--arch/arm/mach-imx/Makefile1
-rw-r--r--arch/arm/mach-imx/Makefile.boot3
-rw-r--r--arch/arm/mach-imx/clock-imx27.c18
-rw-r--r--arch/arm/mach-imx/imx27-dt.c89
-rw-r--r--arch/arm/mach-imx/imx51-dt.c1
-rw-r--r--arch/arm/mach-imx/imx53-dt.c1
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c1
8 files changed, 122 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index feeebde..52359f8 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -373,6 +373,14 @@ config MACH_IMX27IPCAM
Include support for IMX27 IPCAM platform. This includes specific
configurations for the board and its peripherals.
+config MACH_IMX27_DT
+ bool "Support i.MX27 platforms from device tree"
+ select SOC_IMX27
+ select USE_OF
+ help
+ Include support for Freescale i.MX27 based platforms
+ using the device tree for discovery
+
endif
if ARCH_IMX_V6_V7
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 1ca9558..35fc450 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -41,6 +41,7 @@ obj-$(CONFIG_MACH_EUKREA_MBIMX27_BASEBOARD) += eukrea_mbimx27-baseboard.o
obj-$(CONFIG_MACH_PCA100) += mach-pca100.o
obj-$(CONFIG_MACH_MXT_TD60) += mach-mxt_td60.o
obj-$(CONFIG_MACH_IMX27IPCAM) += mach-imx27ipcam.o
+obj-$(CONFIG_MACH_IMX27_DT) += imx27-dt.o
# i.MX31 based machines
obj-$(CONFIG_MACH_MX31ADS) += mach-mx31ads.o
diff --git a/arch/arm/mach-imx/Makefile.boot b/arch/arm/mach-imx/Makefile.boot
index 6dfdbcc..3851d8a 100644
--- a/arch/arm/mach-imx/Makefile.boot
+++ b/arch/arm/mach-imx/Makefile.boot
@@ -38,5 +38,8 @@ zreladdr-$(CONFIG_SOC_IMX6Q) += 0x10008000
params_phys-$(CONFIG_SOC_IMX6Q) := 0x10000100
initrd_phys-$(CONFIG_SOC_IMX6Q) := 0x10800000
+dtb-$(CONFIG_MACH_IMX51_DT) += imx51-babbage.dtb
+dtb-$(CONFIG_MACH_IMX53_DT) += imx53-ard.dtb imx53-evk.dtb \
+ imx53-qsb.dtb imx53-smd.dtb
dtb-$(CONFIG_SOC_IMX6Q) += imx6q-arm2.dtb \
imx6q-sabrelite.dtb
diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c
index dc2d7a5..b9a95ed 100644
--- a/arch/arm/mach-imx/clock-imx27.c
+++ b/arch/arm/mach-imx/clock-imx27.c
@@ -22,6 +22,7 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/clkdev.h>
+#include <linux/of.h>
#include <asm/div64.h>
@@ -764,3 +765,20 @@ int __init mx27_clocks_init(unsigned long fref)
return 0;
}
+#ifdef CONFIG_OF
+int __init mx27_clocks_init_dt(void)
+{
+ struct device_node *np;
+ u32 fref = 26000000; /* default */
+
+ for_each_compatible_node(np, NULL, "fixed-clock") {
+ if (!of_device_is_compatible(np, "fsl,imx-osc26m"))
+ continue;
+
+ if (!of_property_read_u32(np, "clock-frequency", &fref))
+ break;
+ }
+
+ return mx27_clocks_init(fref);
+}
+#endif
diff --git a/arch/arm/mach-imx/imx27-dt.c b/arch/arm/mach-imx/imx27-dt.c
new file mode 100644
index 0000000..861ceb8
--- /dev/null
+++ b/arch/arm/mach-imx/imx27-dt.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ *
+ * 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/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <mach/common.h>
+#include <mach/mx27.h>
+
+static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = {
+ OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART1_BASE_ADDR, "imx21-uart.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART2_BASE_ADDR, "imx21-uart.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART3_BASE_ADDR, "imx21-uart.2", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-fec", MX27_FEC_BASE_ADDR, "imx27-fec.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI1_BASE_ADDR, "imx27-cspi.0", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI2_BASE_ADDR, "imx27-cspi.1", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI3_BASE_ADDR, "imx27-cspi.2", NULL),
+ OF_DEV_AUXDATA("fsl,imx27-wdt", MX27_WDOG_BASE_ADDR, "imx2-wdt.0", NULL),
+ { /* sentinel */ }
+};
+
+static int __init imx27_avic_add_irq_domain(struct device_node *np,
+ struct device_node *interrupt_parent)
+{
+ irq_domain_add_simple(np, 0);
+ return 0;
+}
+
+static int __init imx27_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;
+
+ irq_domain_add_simple(np, gpio_irq_base);
+
+ return 0;
+}
+
+static const struct of_device_id imx27_irq_match[] __initconst = {
+ { .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
+ { .compatible = "fsl,imx27-gpio", .data = imx27_gpio_add_irq_domain, },
+ { /* sentinel */ }
+};
+
+static void __init imx27_dt_init(void)
+{
+ of_irq_init(imx27_irq_match);
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ imx27_auxdata_lookup, NULL);
+}
+
+static void __init imx27_timer_init(void)
+{
+ mx27_clocks_init_dt();
+}
+
+static struct sys_timer imx27_timer = {
+ .init = imx27_timer_init,
+};
+
+static const char *imx27_dt_board_compat[] __initdata = {
+ "fsl,imx27",
+ NULL
+};
+
+DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
+ .map_io = mx27_map_io,
+ .init_early = imx27_init_early,
+ .init_irq = mx27_init_irq,
+ .handle_irq = imx27_handle_irq,
+ .timer = &imx27_timer,
+ .init_machine = imx27_dt_init,
+ .dt_compat = imx27_dt_board_compat,
+ .restart = mxc_restart,
+MACHINE_END
diff --git a/arch/arm/mach-imx/imx51-dt.c b/arch/arm/mach-imx/imx51-dt.c
index 1e03ef4..5cca573 100644
--- a/arch/arm/mach-imx/imx51-dt.c
+++ b/arch/arm/mach-imx/imx51-dt.c
@@ -104,6 +104,7 @@ static struct sys_timer imx51_timer = {
static const char *imx51_dt_board_compat[] __initdata = {
"fsl,imx51-babbage",
+ "fsl,imx51",
NULL
};
diff --git a/arch/arm/mach-imx/imx53-dt.c b/arch/arm/mach-imx/imx53-dt.c
index fd5be0f2..4172279 100644
--- a/arch/arm/mach-imx/imx53-dt.c
+++ b/arch/arm/mach-imx/imx53-dt.c
@@ -114,6 +114,7 @@ static const char *imx53_dt_board_compat[] __initdata = {
"fsl,imx53-evk",
"fsl,imx53-qsb",
"fsl,imx53-smd",
+ "fsl,imx53",
NULL
};
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 21f54a8..7696dfa 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -131,6 +131,7 @@ static struct sys_timer imx6q_timer = {
static const char *imx6q_dt_compat[] __initdata = {
"fsl,imx6q-arm2",
"fsl,imx6q-sabrelite",
+ "fsl,imx6q",
NULL,
};
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