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/module.h> 22#include <linux/param.h> 23#include <linux/string.h> 24#include <linux/ioport.h> 25#include <linux/device.h> 26#include <linux/delay.h> 27 28#include <linux/fs_enet_pd.h> 29#include <linux/fs_uart_pd.h> 30#include <linux/fsl_devices.h> 31#include <linux/mii.h> 32#include <linux/of_platform.h> 33 34#include <asm/delay.h> 35#include <asm/io.h> 36#include <asm/machdep.h> 37#include <asm/page.h> 38#include <asm/processor.h> 39#include <asm/system.h> 40#include <asm/time.h> 41#include <asm/mpc8xx.h> 42#include <asm/8xx_immap.h> 43#include <asm/cpm1.h> 44#include <asm/fs_pd.h> 45#include <asm/udbg.h> 46 47#include "mpc8xx.h" 48 49struct cpm_pin { 50 int port, pin, flags; 51}; 52 53static struct __initdata cpm_pin tqm8xx_pins[] = { 54 /* SMC1 */ 55 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */ 56 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ 57 58 /* SCC1 */ 59 {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */ 60 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */ 61 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */ 62 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */ 63 {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */ 64 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, 65 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, 66}; 67 68static struct __initdata cpm_pin tqm8xx_fec_pins[] = { 69 /* MII */ 70 {CPM_PORTD, 3, CPM_PIN_OUTPUT}, 71 {CPM_PORTD, 4, CPM_PIN_OUTPUT}, 72 {CPM_PORTD, 5, CPM_PIN_OUTPUT}, 73 {CPM_PORTD, 6, CPM_PIN_OUTPUT}, 74 {CPM_PORTD, 7, CPM_PIN_OUTPUT}, 75 {CPM_PORTD, 8, CPM_PIN_OUTPUT}, 76 {CPM_PORTD, 9, CPM_PIN_OUTPUT}, 77 {CPM_PORTD, 10, CPM_PIN_OUTPUT}, 78 {CPM_PORTD, 11, CPM_PIN_OUTPUT}, 79 {CPM_PORTD, 12, CPM_PIN_OUTPUT}, 80 {CPM_PORTD, 13, CPM_PIN_OUTPUT}, 81 {CPM_PORTD, 14, CPM_PIN_OUTPUT}, 82 {CPM_PORTD, 15, CPM_PIN_OUTPUT}, 83}; 84 85static void __init init_pins(int n, struct cpm_pin *pin) 86{ 87 int i; 88 89 for (i = 0; i < n; i++) { 90 cpm1_set_pin(pin->port, pin->pin, pin->flags); 91 pin++; 92 } 93} 94 95static void __init init_ioports(void) 96{ 97 struct device_node *dnode; 98 struct property *prop; 99 int len; 100 101 init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]); 102 103 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); 104 105 dnode = of_find_node_by_name(NULL, "aliases"); 106 if (dnode == NULL) 107 return; 108 prop = of_find_property(dnode, "ethernet1", &len); 109 if (prop == NULL) 110 return; 111 112 /* init FEC pins */ 113 init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]); 114} 115 116static void __init tqm8xx_setup_arch(void) 117{ 118 cpm_reset(); 119 init_ioports(); 120} 121 122static int __init tqm8xx_probe(void) 123{ 124 unsigned long node = of_get_flat_dt_root(); 125 126 return of_flat_dt_is_compatible(node, "tqc,tqm8xx"); 127} 128 129static struct of_device_id __initdata of_bus_ids[] = { 130 { .name = "soc", }, 131 { .name = "cpm", }, 132 { .name = "localbus", }, 133 { .compatible = "simple-bus" }, 134 {}, 135}; 136 137static int __init declare_of_platform_devices(void) 138{ 139 of_platform_bus_probe(NULL, of_bus_ids, NULL); 140 141 return 0; 142} 143machine_device_initcall(tqm8xx, declare_of_platform_devices); 144 145define_machine(tqm8xx) { 146 .name = "TQM8xx", 147 .probe = tqm8xx_probe, 148 .setup_arch = tqm8xx_setup_arch, 149 .init_IRQ = mpc8xx_pics_init, 150 .get_irq = mpc8xx_get_irq, 151 .restart = mpc8xx_restart, 152 .calibrate_decr = mpc8xx_calibrate_decr, 153 .set_rtc_time = mpc8xx_set_rtc_time, 154 .get_rtc_time = mpc8xx_get_rtc_time, 155 .progress = udbg_progress, 156}; 157