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 #include "pic.h" 24 25 struct cpm_pin { 26 int port, pin, flags; 27 }; 28 29 static struct cpm_pin ep88xc_pins[] = { 30 /* SMC1 */ 31 {1, 24, CPM_PIN_INPUT}, /* RX */ 32 {1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ 33 34 /* SCC2 */ 35 {0, 12, CPM_PIN_INPUT}, /* TX */ 36 {0, 13, CPM_PIN_INPUT}, /* RX */ 37 {2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */ 38 {2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */ 39 {2, 14, CPM_PIN_INPUT}, /* RTS */ 40 41 /* MII1 */ 42 {0, 0, CPM_PIN_INPUT}, 43 {0, 1, CPM_PIN_INPUT}, 44 {0, 2, CPM_PIN_INPUT}, 45 {0, 3, CPM_PIN_INPUT}, 46 {0, 4, CPM_PIN_OUTPUT}, 47 {0, 10, CPM_PIN_OUTPUT}, 48 {0, 11, CPM_PIN_OUTPUT}, 49 {1, 19, CPM_PIN_INPUT}, 50 {1, 31, CPM_PIN_INPUT}, 51 {2, 12, CPM_PIN_INPUT}, 52 {2, 13, CPM_PIN_INPUT}, 53 {3, 8, CPM_PIN_INPUT}, 54 {4, 30, CPM_PIN_OUTPUT}, 55 {4, 31, CPM_PIN_OUTPUT}, 56 57 /* MII2 */ 58 {4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 59 {4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 60 {4, 16, CPM_PIN_OUTPUT}, 61 {4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 62 {4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 63 {4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 64 {4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 65 {4, 21, CPM_PIN_OUTPUT}, 66 {4, 22, CPM_PIN_OUTPUT}, 67 {4, 23, CPM_PIN_OUTPUT}, 68 {4, 24, CPM_PIN_OUTPUT}, 69 {4, 25, CPM_PIN_OUTPUT}, 70 {4, 26, CPM_PIN_OUTPUT}, 71 {4, 27, CPM_PIN_OUTPUT}, 72 {4, 28, CPM_PIN_OUTPUT}, 73 {4, 29, CPM_PIN_OUTPUT}, 74 75 /* USB */ 76 {0, 6, CPM_PIN_INPUT}, /* CLK2 */ 77 {0, 14, CPM_PIN_INPUT}, /* USBOE */ 78 {0, 15, CPM_PIN_INPUT}, /* USBRXD */ 79 {2, 6, CPM_PIN_OUTPUT}, /* USBTXN */ 80 {2, 7, CPM_PIN_OUTPUT}, /* USBTXP */ 81 {2, 10, CPM_PIN_INPUT}, /* USBRXN */ 82 {2, 11, CPM_PIN_INPUT}, /* USBRXP */ 83 84 /* Misc */ 85 {1, 26, CPM_PIN_INPUT}, /* BRGO2 */ 86 {1, 27, CPM_PIN_INPUT}, /* BRGO1 */ 87 }; 88 89 static void __init init_ioports(void) 90 { 91 int i; 92 93 for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) { 94 struct cpm_pin *pin = &ep88xc_pins[i]; 95 cpm1_set_pin(pin->port, pin->pin, pin->flags); 96 } 97 98 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); 99 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */ 100 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX); 101 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 102 cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 103 } 104 105 static u8 __iomem *ep88xc_bcsr; 106 107 #define BCSR7_SCC2_ENABLE 0x10 108 109 #define BCSR8_PHY1_ENABLE 0x80 110 #define BCSR8_PHY1_POWER 0x40 111 #define BCSR8_PHY2_ENABLE 0x20 112 #define BCSR8_PHY2_POWER 0x10 113 114 #define BCSR9_USB_ENABLE 0x80 115 #define BCSR9_USB_POWER 0x40 116 #define BCSR9_USB_HOST 0x20 117 #define BCSR9_USB_FULL_SPEED_TARGET 0x10 118 119 static void __init ep88xc_setup_arch(void) 120 { 121 struct device_node *np; 122 123 cpm_reset(); 124 init_ioports(); 125 126 np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr"); 127 if (!np) { 128 printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n"); 129 return; 130 } 131 132 ep88xc_bcsr = of_iomap(np, 0); 133 of_node_put(np); 134 135 if (!ep88xc_bcsr) { 136 printk(KERN_CRIT "Could not remap BCSR\n"); 137 return; 138 } 139 140 setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE); 141 setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER | 142 BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER); 143 } 144 145 static const struct of_device_id of_bus_ids[] __initconst = { 146 { .name = "soc", }, 147 { .name = "cpm", }, 148 { .name = "localbus", }, 149 {}, 150 }; 151 152 static int __init declare_of_platform_devices(void) 153 { 154 /* Publish the QE devices */ 155 of_platform_bus_probe(NULL, of_bus_ids, NULL); 156 157 return 0; 158 } 159 machine_device_initcall(ep88xc, declare_of_platform_devices); 160 161 define_machine(ep88xc) { 162 .name = "Embedded Planet EP88xC", 163 .compatible = "fsl,ep88xc", 164 .setup_arch = ep88xc_setup_arch, 165 .init_IRQ = mpc8xx_pic_init, 166 .get_irq = mpc8xx_get_irq, 167 .restart = mpc8xx_restart, 168 .calibrate_decr = mpc8xx_calibrate_decr, 169 .progress = udbg_progress, 170 }; 171