1/* 2 * Platform setup for the Embedded Planet EP88xC board 3 * 4 * Author: Scott Wood <scottwood@freescale.com> 5 * Copyright 2007 Freescale Semiconductor, Inc. 6 * 7 * This file is licensed under the terms of the GNU General Public License 8 * version 2. This program is licensed "as is" without any warranty of any 9 * kind, whether express or implied. 10 */ 11 12#include <linux/init.h> 13#include <linux/of_platform.h> 14 15#include <asm/machdep.h> 16#include <asm/io.h> 17#include <asm/udbg.h> 18#include <asm/cpm1.h> 19 20#include "mpc8xx.h" 21 22struct cpm_pin { 23 int port, pin, flags; 24}; 25 26static struct cpm_pin ep88xc_pins[] = { 27 /* SMC1 */ 28 {1, 24, CPM_PIN_INPUT}, /* RX */ 29 {1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ 30 31 /* SCC2 */ 32 {0, 12, CPM_PIN_INPUT}, /* TX */ 33 {0, 13, CPM_PIN_INPUT}, /* RX */ 34 {2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */ 35 {2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */ 36 {2, 14, CPM_PIN_INPUT}, /* RTS */ 37 38 /* MII1 */ 39 {0, 0, CPM_PIN_INPUT}, 40 {0, 1, CPM_PIN_INPUT}, 41 {0, 2, CPM_PIN_INPUT}, 42 {0, 3, CPM_PIN_INPUT}, 43 {0, 4, CPM_PIN_OUTPUT}, 44 {0, 10, CPM_PIN_OUTPUT}, 45 {0, 11, CPM_PIN_OUTPUT}, 46 {1, 19, CPM_PIN_INPUT}, 47 {1, 31, CPM_PIN_INPUT}, 48 {2, 12, CPM_PIN_INPUT}, 49 {2, 13, CPM_PIN_INPUT}, 50 {3, 8, CPM_PIN_INPUT}, 51 {4, 30, CPM_PIN_OUTPUT}, 52 {4, 31, CPM_PIN_OUTPUT}, 53 54 /* MII2 */ 55 {4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 56 {4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 57 {4, 16, CPM_PIN_OUTPUT}, 58 {4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 59 {4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 60 {4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 61 {4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 62 {4, 21, CPM_PIN_OUTPUT}, 63 {4, 22, CPM_PIN_OUTPUT}, 64 {4, 23, CPM_PIN_OUTPUT}, 65 {4, 24, CPM_PIN_OUTPUT}, 66 {4, 25, CPM_PIN_OUTPUT}, 67 {4, 26, CPM_PIN_OUTPUT}, 68 {4, 27, CPM_PIN_OUTPUT}, 69 {4, 28, CPM_PIN_OUTPUT}, 70 {4, 29, CPM_PIN_OUTPUT}, 71 72 /* USB */ 73 {0, 6, CPM_PIN_INPUT}, /* CLK2 */ 74 {0, 14, CPM_PIN_INPUT}, /* USBOE */ 75 {0, 15, CPM_PIN_INPUT}, /* USBRXD */ 76 {2, 6, CPM_PIN_OUTPUT}, /* USBTXN */ 77 {2, 7, CPM_PIN_OUTPUT}, /* USBTXP */ 78 {2, 10, CPM_PIN_INPUT}, /* USBRXN */ 79 {2, 11, CPM_PIN_INPUT}, /* USBRXP */ 80 81 /* Misc */ 82 {1, 26, CPM_PIN_INPUT}, /* BRGO2 */ 83 {1, 27, CPM_PIN_INPUT}, /* BRGO1 */ 84}; 85 86static void __init init_ioports(void) 87{ 88 int i; 89 90 for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) { 91 struct cpm_pin *pin = &ep88xc_pins[i]; 92 cpm1_set_pin(pin->port, pin->pin, pin->flags); 93 } 94 95 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); 96 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */ 97 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX); 98 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 99 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 100} 101 102static u8 __iomem *ep88xc_bcsr; 103 104#define BCSR7_SCC2_ENABLE 0x10 105 106#define BCSR8_PHY1_ENABLE 0x80 107#define BCSR8_PHY1_POWER 0x40 108#define BCSR8_PHY2_ENABLE 0x20 109#define BCSR8_PHY2_POWER 0x10 110 111#define BCSR9_USB_ENABLE 0x80 112#define BCSR9_USB_POWER 0x40 113#define BCSR9_USB_HOST 0x20 114#define BCSR9_USB_FULL_SPEED_TARGET 0x10 115 116static void __init ep88xc_setup_arch(void) 117{ 118 struct device_node *np; 119 120 cpm_reset(); 121 init_ioports(); 122 123 np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr"); 124 if (!np) { 125 printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n"); 126 return; 127 } 128 129 ep88xc_bcsr = of_iomap(np, 0); 130 of_node_put(np); 131 132 if (!ep88xc_bcsr) { 133 printk(KERN_CRIT "Could not remap BCSR\n"); 134 return; 135 } 136 137 setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE); 138 setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER | 139 BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER); 140} 141 142static int __init ep88xc_probe(void) 143{ 144 unsigned long root = of_get_flat_dt_root(); 145 return of_flat_dt_is_compatible(root, "fsl,ep88xc"); 146} 147 148static struct of_device_id __initdata of_bus_ids[] = { 149 { .name = "soc", }, 150 { .name = "cpm", }, 151 { .name = "localbus", }, 152 {}, 153}; 154 155static int __init declare_of_platform_devices(void) 156{ 157 /* Publish the QE devices */ 158 of_platform_bus_probe(NULL, of_bus_ids, NULL); 159 160 return 0; 161} 162machine_device_initcall(ep88xc, declare_of_platform_devices); 163 164define_machine(ep88xc) { 165 .name = "Embedded Planet EP88xC", 166 .probe = ep88xc_probe, 167 .setup_arch = ep88xc_setup_arch, 168 .init_IRQ = mpc8xx_pics_init, 169 .get_irq = mpc8xx_get_irq, 170 .restart = mpc8xx_restart, 171 .calibrate_decr = mpc8xx_calibrate_decr, 172 .set_rtc_time = mpc8xx_set_rtc_time, 173 .get_rtc_time = mpc8xx_get_rtc_time, 174 .progress = udbg_progress, 175}; 176