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_address.h> 14 #include <linux/of_fdt.h> 15 #include <linux/of_platform.h> 16 17 #include <asm/machdep.h> 18 #include <asm/io.h> 19 #include <asm/udbg.h> 20 #include <asm/cpm1.h> 21 22 #include "mpc8xx.h" 23 24 struct cpm_pin { 25 int port, pin, flags; 26 }; 27 28 static struct cpm_pin ep88xc_pins[] = { 29 /* SMC1 */ 30 {1, 24, CPM_PIN_INPUT}, /* RX */ 31 {1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ 32 33 /* SCC2 */ 34 {0, 12, CPM_PIN_INPUT}, /* TX */ 35 {0, 13, CPM_PIN_INPUT}, /* RX */ 36 {2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */ 37 {2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */ 38 {2, 14, CPM_PIN_INPUT}, /* RTS */ 39 40 /* MII1 */ 41 {0, 0, CPM_PIN_INPUT}, 42 {0, 1, CPM_PIN_INPUT}, 43 {0, 2, CPM_PIN_INPUT}, 44 {0, 3, CPM_PIN_INPUT}, 45 {0, 4, CPM_PIN_OUTPUT}, 46 {0, 10, CPM_PIN_OUTPUT}, 47 {0, 11, CPM_PIN_OUTPUT}, 48 {1, 19, CPM_PIN_INPUT}, 49 {1, 31, CPM_PIN_INPUT}, 50 {2, 12, CPM_PIN_INPUT}, 51 {2, 13, CPM_PIN_INPUT}, 52 {3, 8, CPM_PIN_INPUT}, 53 {4, 30, CPM_PIN_OUTPUT}, 54 {4, 31, CPM_PIN_OUTPUT}, 55 56 /* MII2 */ 57 {4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 58 {4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 59 {4, 16, CPM_PIN_OUTPUT}, 60 {4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 61 {4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 62 {4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 63 {4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 64 {4, 21, CPM_PIN_OUTPUT}, 65 {4, 22, CPM_PIN_OUTPUT}, 66 {4, 23, CPM_PIN_OUTPUT}, 67 {4, 24, CPM_PIN_OUTPUT}, 68 {4, 25, CPM_PIN_OUTPUT}, 69 {4, 26, CPM_PIN_OUTPUT}, 70 {4, 27, CPM_PIN_OUTPUT}, 71 {4, 28, CPM_PIN_OUTPUT}, 72 {4, 29, CPM_PIN_OUTPUT}, 73 74 /* USB */ 75 {0, 6, CPM_PIN_INPUT}, /* CLK2 */ 76 {0, 14, CPM_PIN_INPUT}, /* USBOE */ 77 {0, 15, CPM_PIN_INPUT}, /* USBRXD */ 78 {2, 6, CPM_PIN_OUTPUT}, /* USBTXN */ 79 {2, 7, CPM_PIN_OUTPUT}, /* USBTXP */ 80 {2, 10, CPM_PIN_INPUT}, /* USBRXN */ 81 {2, 11, CPM_PIN_INPUT}, /* USBRXP */ 82 83 /* Misc */ 84 {1, 26, CPM_PIN_INPUT}, /* BRGO2 */ 85 {1, 27, CPM_PIN_INPUT}, /* BRGO1 */ 86 }; 87 88 static void __init init_ioports(void) 89 { 90 int i; 91 92 for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) { 93 struct cpm_pin *pin = &ep88xc_pins[i]; 94 cpm1_set_pin(pin->port, pin->pin, pin->flags); 95 } 96 97 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); 98 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */ 99 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX); 100 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 101 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 102 } 103 104 static u8 __iomem *ep88xc_bcsr; 105 106 #define BCSR7_SCC2_ENABLE 0x10 107 108 #define BCSR8_PHY1_ENABLE 0x80 109 #define BCSR8_PHY1_POWER 0x40 110 #define BCSR8_PHY2_ENABLE 0x20 111 #define BCSR8_PHY2_POWER 0x10 112 113 #define BCSR9_USB_ENABLE 0x80 114 #define BCSR9_USB_POWER 0x40 115 #define BCSR9_USB_HOST 0x20 116 #define BCSR9_USB_FULL_SPEED_TARGET 0x10 117 118 static void __init ep88xc_setup_arch(void) 119 { 120 struct device_node *np; 121 122 cpm_reset(); 123 init_ioports(); 124 125 np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr"); 126 if (!np) { 127 printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n"); 128 return; 129 } 130 131 ep88xc_bcsr = of_iomap(np, 0); 132 of_node_put(np); 133 134 if (!ep88xc_bcsr) { 135 printk(KERN_CRIT "Could not remap BCSR\n"); 136 return; 137 } 138 139 setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE); 140 setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER | 141 BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER); 142 } 143 144 static int __init ep88xc_probe(void) 145 { 146 return of_machine_is_compatible("fsl,ep88xc"); 147 } 148 149 static const struct of_device_id of_bus_ids[] __initconst = { 150 { .name = "soc", }, 151 { .name = "cpm", }, 152 { .name = "localbus", }, 153 {}, 154 }; 155 156 static int __init declare_of_platform_devices(void) 157 { 158 /* Publish the QE devices */ 159 of_platform_bus_probe(NULL, of_bus_ids, NULL); 160 161 return 0; 162 } 163 machine_device_initcall(ep88xc, declare_of_platform_devices); 164 165 define_machine(ep88xc) { 166 .name = "Embedded Planet EP88xC", 167 .probe = ep88xc_probe, 168 .setup_arch = ep88xc_setup_arch, 169 .init_IRQ = mpc8xx_pics_init, 170 .get_irq = mpc8xx_get_irq, 171 .restart = mpc8xx_restart, 172 .calibrate_decr = mpc8xx_calibrate_decr, 173 .progress = udbg_progress, 174 }; 175