1 files changed, 126 insertions, 0 deletions

diff --git a/arch/arm/mach-mx5/imx53-dt.c b/arch/arm/mach-mx5/imx53-dt.c
new file mode 100644
index 000000000000..ccaa0b81b768
--- /dev/null
+++ b/arch/arm/mach-mx5/imx53-dt.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * 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/io.h>
+#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/mx53.h>
+
+/*
+ * Lookup table for attaching a specific name and platform_data pointer to
+ * devices as they get created by of_platform_populate().  Ideally this table
+ * would not exist, but the current clock implementation depends on some devices
+ * having a specific name.
+ */
+static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = {
+        OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL),
+        OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL),
+        { /* sentinel */ }
+};
+
+static void __init imx53_tzic_add_irq_domain(struct device_node *np,
+                                struct device_node *interrupt_parent)
+{
+        irq_domain_add_simple(np, 0);
+}
+
+static void __init imx53_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; /* imx53 gets 7 gpio ports */
+
+        irq_domain_add_simple(np, gpio_irq_base);
+        gpio_irq_base += 32;
+}
+
+static const struct of_device_id imx53_irq_match[] __initconst = {
+        { .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, },
+        { .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, },
+        { /* sentinel */ }
+};
+
+static const struct of_device_id imx53_iomuxc_of_match[] __initconst = {
+        { .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, },
+        { .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, },
+        { .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, },
+        { .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, },
+        { /* sentinel */ }
+};
+
+static void __init imx53_dt_init(void)
+{
+        struct device_node *node;
+        const struct of_device_id *of_id;
+        void (*func)(void);
+
+        of_irq_init(imx53_irq_match);
+
+        node = of_find_matching_node(NULL, imx53_iomuxc_of_match);
+        if (node) {
+                of_id = of_match_node(imx53_iomuxc_of_match, node);
+                func = of_id->data;
+                func();
+                of_node_put(node);
+        }
+
+        of_platform_populate(NULL, of_default_bus_match_table,
+                             imx53_auxdata_lookup, NULL);
+}
+
+static void __init imx53_timer_init(void)
+{
+        mx53_clocks_init_dt();
+}
+
+static struct sys_timer imx53_timer = {
+        .init = imx53_timer_init,
+};
+
+static const char *imx53_dt_board_compat[] __initdata = {
+        "fsl,imx53-ard",
+        "fsl,imx53-evk",
+        "fsl,imx53-qsb",
+        "fsl,imx53-smd",
+        NULL
+};
+
+DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
+        .map_io         = mx53_map_io,
+        .init_early     = imx53_init_early,
+        .init_irq       = mx53_init_irq,
+        .handle_irq     = imx53_handle_irq,
+        .timer          = &imx53_timer,
+        .init_machine   = imx53_dt_init,
+        .dt_compat      = imx53_dt_board_compat,
+MACHINE_END