1 /* 2 * Platform setup for the MPC8xx based boards from TQM. 3 * 4 * Heiko Schocher <hs@denx.de> 5 * Copyright 2010 DENX Software Engineering GmbH 6 * 7 * based on: 8 * Vitaly Bordug <vbordug@ru.mvista.com> 9 * 10 * Copyright 2005 MontaVista Software Inc. 11 * 12 * Heavily modified by Scott Wood <scottwood@freescale.com> 13 * Copyright 2007 Freescale Semiconductor, Inc. 14 * 15 * This file is licensed under the terms of the GNU General Public License 16 * version 2. This program is licensed "as is" without any warranty of any 17 * kind, whether express or implied. 18 */ 19 20 #include <linux/init.h> 21 #include <linux/param.h> 22 #include <linux/string.h> 23 #include <linux/ioport.h> 24 #include <linux/device.h> 25 #include <linux/delay.h> 26 27 #include <linux/fsl_devices.h> 28 #include <linux/mii.h> 29 #include <linux/of_fdt.h> 30 #include <linux/of_platform.h> 31 32 #include <asm/delay.h> 33 #include <asm/io.h> 34 #include <asm/machdep.h> 35 #include <asm/page.h> 36 #include <asm/processor.h> 37 #include <asm/time.h> 38 #include <asm/8xx_immap.h> 39 #include <asm/cpm1.h> 40 #include <asm/udbg.h> 41 42 #include "mpc8xx.h" 43 #include "pic.h" 44 45 struct cpm_pin { 46 int port, pin, flags; 47 }; 48 49 static struct cpm_pin tqm8xx_pins[] __initdata = { 50 /* SMC1 */ 51 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */ 52 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ 53 54 /* SCC1 */ 55 {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */ 56 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */ 57 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */ 58 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */ 59 {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */ 60 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, 61 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, 62 }; 63 64 static struct cpm_pin tqm8xx_fec_pins[] __initdata = { 65 /* MII */ 66 {CPM_PORTD, 3, CPM_PIN_OUTPUT}, 67 {CPM_PORTD, 4, CPM_PIN_OUTPUT}, 68 {CPM_PORTD, 5, CPM_PIN_OUTPUT}, 69 {CPM_PORTD, 6, CPM_PIN_OUTPUT}, 70 {CPM_PORTD, 7, CPM_PIN_OUTPUT}, 71 {CPM_PORTD, 8, CPM_PIN_OUTPUT}, 72 {CPM_PORTD, 9, CPM_PIN_OUTPUT}, 73 {CPM_PORTD, 10, CPM_PIN_OUTPUT}, 74 {CPM_PORTD, 11, CPM_PIN_OUTPUT}, 75 {CPM_PORTD, 12, CPM_PIN_OUTPUT}, 76 {CPM_PORTD, 13, CPM_PIN_OUTPUT}, 77 {CPM_PORTD, 14, CPM_PIN_OUTPUT}, 78 {CPM_PORTD, 15, CPM_PIN_OUTPUT}, 79 }; 80 81 static void __init init_pins(int n, struct cpm_pin *pin) 82 { 83 int i; 84 85 for (i = 0; i < n; i++) { 86 cpm1_set_pin(pin->port, pin->pin, pin->flags); 87 pin++; 88 } 89 } 90 91 static void __init init_ioports(void) 92 { 93 struct device_node *dnode; 94 struct property *prop; 95 int len; 96 97 init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]); 98 99 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); 100 101 dnode = of_find_node_by_name(NULL, "aliases"); 102 if (dnode == NULL) 103 return; 104 prop = of_find_property(dnode, "ethernet1", &len); 105 106 of_node_put(dnode); 107 108 if (prop == NULL) 109 return; 110 111 /* init FEC pins */ 112 init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]); 113 } 114 115 static void __init tqm8xx_setup_arch(void) 116 { 117 cpm_reset(); 118 init_ioports(); 119 } 120 121 static const struct of_device_id of_bus_ids[] __initconst = { 122 { .name = "soc", }, 123 { .name = "cpm", }, 124 { .name = "localbus", }, 125 { .compatible = "simple-bus" }, 126 {}, 127 }; 128 129 static int __init declare_of_platform_devices(void) 130 { 131 of_platform_bus_probe(NULL, of_bus_ids, NULL); 132 133 return 0; 134 } 135 machine_device_initcall(tqm8xx, declare_of_platform_devices); 136 137 define_machine(tqm8xx) { 138 .name = "TQM8xx", 139 .compatible = "tqc,tqm8xx", 140 .setup_arch = tqm8xx_setup_arch, 141 .init_IRQ = mpc8xx_pic_init, 142 .get_irq = mpc8xx_get_irq, 143 .restart = mpc8xx_restart, 144 .calibrate_decr = mpc8xx_calibrate_decr, 145 .set_rtc_time = mpc8xx_set_rtc_time, 146 .get_rtc_time = mpc8xx_get_rtc_time, 147 .progress = udbg_progress, 148 }; 149