1/* 2 * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. 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/io.h> 14#include <linux/irq.h> 15#include <linux/irqdomain.h> 16#include <linux/of_irq.h> 17#include <linux/of_platform.h> 18#include <asm/mach/arch.h> 19#include <asm/mach/time.h> 20#include <mach/common.h> 21#include <mach/mx53.h> 22 23/* 24 * Lookup table for attaching a specific name and platform_data pointer to 25 * devices as they get created by of_platform_populate(). Ideally this table 26 * would not exist, but the current clock implementation depends on some devices 27 * having a specific name. 28 */ 29static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { 30 OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL), 31 OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL), 32 OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL), 33 OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL), 34 OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL), 35 OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL), 36 OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL), 37 OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL), 38 OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL), 39 OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL), 40 OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), 41 OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), 42 OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), 43 OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL), 44 OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL), 45 OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL), 46 OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL), 47 OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), 48 { /* sentinel */ } 49}; 50 51static int __init imx53_tzic_add_irq_domain(struct device_node *np, 52 struct device_node *interrupt_parent) 53{ 54 irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL); 55 return 0; 56} 57 58static int __init imx53_gpio_add_irq_domain(struct device_node *np, 59 struct device_node *interrupt_parent) 60{ 61 static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS; 62 63 gpio_irq_base -= 32; 64 irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL); 65 66 return 0; 67} 68 69static const struct of_device_id imx53_irq_match[] __initconst = { 70 { .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, }, 71 { .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, }, 72 { /* sentinel */ } 73}; 74 75static const struct of_device_id imx53_iomuxc_of_match[] __initconst = { 76 { .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, }, 77 { .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, }, 78 { .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, }, 79 { .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, }, 80 { /* sentinel */ } 81}; 82 83static void __init imx53_dt_init(void) 84{ 85 struct device_node *node; 86 const struct of_device_id *of_id; 87 void (*func)(void); 88 89 of_irq_init(imx53_irq_match); 90 91 node = of_find_matching_node(NULL, imx53_iomuxc_of_match); 92 if (node) { 93 of_id = of_match_node(imx53_iomuxc_of_match, node); 94 func = of_id->data; 95 func(); 96 of_node_put(node); 97 } 98 99 of_platform_populate(NULL, of_default_bus_match_table, 100 imx53_auxdata_lookup, NULL); 101} 102 103static void __init imx53_timer_init(void) 104{ 105 mx53_clocks_init_dt(); 106} 107 108static struct sys_timer imx53_timer = { 109 .init = imx53_timer_init, 110}; 111 112static const char *imx53_dt_board_compat[] __initdata = { 113 "fsl,imx53-ard", 114 "fsl,imx53-evk", 115 "fsl,imx53-qsb", 116 "fsl,imx53-smd", 117 "fsl,imx53", 118 NULL 119}; 120 121DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") 122 .map_io = mx53_map_io, 123 .init_early = imx53_init_early, 124 .init_irq = mx53_init_irq, 125 .handle_irq = imx53_handle_irq, 126 .timer = &imx53_timer, 127 .init_machine = imx53_dt_init, 128 .dt_compat = imx53_dt_board_compat, 129 .restart = mxc_restart, 130MACHINE_END 131