Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 1 | /* |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 2 | * MPC8272 ADS board support |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 3 | * |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 4 | * Copyright 2007 Freescale Semiconductor, Inc. |
| 5 | * Author: Scott Wood <scottwood@freescale.com> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 6 | * |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 7 | * Based on code by Vitaly Bordug <vbordug@ru.mvista.com> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 8 | * Copyright (c) 2006 MontaVista Software, Inc. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | */ |
| 15 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 16 | #include <linux/init.h> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 17 | #include <linux/interrupt.h> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 18 | #include <linux/fsl_devices.h> |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 19 | #include <linux/of_platform.h> |
| 20 | #include <linux/io.h> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 21 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 22 | #include <asm/cpm2.h> |
| 23 | #include <asm/udbg.h> |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 24 | #include <asm/machdep.h> |
| 25 | #include <asm/time.h> |
| 26 | |
| 27 | #include <platforms/82xx/pq2.h> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 28 | |
| 29 | #include <sysdev/fsl_soc.h> |
Arnd Bergmann | 1430560 | 2007-06-18 01:06:55 +0200 | [diff] [blame] | 30 | #include <sysdev/cpm2_pic.h> |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 31 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 32 | #include "pq2.h" |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 33 | |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 34 | static void __init mpc8272_ads_pic_init(void) |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 35 | { |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 36 | struct device_node *np = of_find_compatible_node(NULL, NULL, |
| 37 | "fsl,cpm2-pic"); |
| 38 | if (!np) { |
| 39 | printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); |
| 40 | return; |
| 41 | } |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 42 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 43 | cpm2_pic_init(np); |
| 44 | of_node_put(np); |
| 45 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 46 | /* Initialize stuff for the 82xx CPLD IC and install demux */ |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 47 | pq2ads_pci_init_irq(); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 48 | } |
| 49 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 50 | struct cpm_pin { |
| 51 | int port, pin, flags; |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 52 | }; |
| 53 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 54 | static struct cpm_pin mpc8272_ads_pins[] = { |
| 55 | /* SCC1 */ |
| 56 | {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 57 | {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 58 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 59 | /* SCC4 */ |
| 60 | {3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 61 | {3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 62 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 63 | /* FCC1 */ |
| 64 | {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 65 | {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 66 | {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 67 | {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 68 | {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 69 | {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 70 | {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 71 | {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 72 | {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, |
| 73 | {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, |
| 74 | {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 75 | {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 76 | {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, |
| 77 | {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, |
| 78 | {2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 79 | {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 80 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 81 | /* FCC2 */ |
| 82 | {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 83 | {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 84 | {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 85 | {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 86 | {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 87 | {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 88 | {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 89 | {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 90 | {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 91 | {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 92 | {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 93 | {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 94 | {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 95 | {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 96 | {2, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 97 | {2, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
Jochen Friedrich | a5d28c8 | 2008-07-02 18:06:13 +0200 | [diff] [blame] | 98 | |
| 99 | /* I2C */ |
| 100 | {3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, |
| 101 | {3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, |
Anton Vorontsov | 818fcac | 2009-08-19 03:28:17 +0400 | [diff] [blame] | 102 | |
| 103 | /* USB */ |
| 104 | {2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 105 | {2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 106 | {2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 107 | {2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 108 | {3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 109 | {3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 110 | {3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 111 | }; |
| 112 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 113 | static void __init init_ioports(void) |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 114 | { |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 115 | int i; |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 116 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 117 | for (i = 0; i < ARRAY_SIZE(mpc8272_ads_pins); i++) { |
| 118 | struct cpm_pin *pin = &mpc8272_ads_pins[i]; |
| 119 | cpm2_set_pin(pin->port, pin->pin, pin->flags); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 120 | } |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 121 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 122 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); |
| 123 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); |
Anton Vorontsov | 818fcac | 2009-08-19 03:28:17 +0400 | [diff] [blame] | 124 | cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_RX); |
| 125 | cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_TX); |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 126 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_RX); |
| 127 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_TX); |
| 128 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK11, CPM_CLK_RX); |
| 129 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); |
| 130 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK15, CPM_CLK_RX); |
| 131 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK16, CPM_CLK_TX); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 132 | } |
| 133 | |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 134 | static void __init mpc8272_ads_setup_arch(void) |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 135 | { |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 136 | struct device_node *np; |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 137 | __be32 __iomem *bcsr; |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 138 | |
| 139 | if (ppc_md.progress) |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 140 | ppc_md.progress("mpc8272_ads_setup_arch()", 0); |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 141 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 142 | cpm2_reset(); |
| 143 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 144 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc8272ads-bcsr"); |
| 145 | if (!np) { |
| 146 | printk(KERN_ERR "No bcsr in device tree\n"); |
| 147 | return; |
| 148 | } |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 149 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 150 | bcsr = of_iomap(np, 0); |
Julia Lawall | 75e89b0 | 2008-02-04 23:35:00 -0800 | [diff] [blame] | 151 | of_node_put(np); |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 152 | if (!bcsr) { |
| 153 | printk(KERN_ERR "Cannot map BCSR registers\n"); |
| 154 | return; |
| 155 | } |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 156 | |
Anton Vorontsov | a70e88b | 2009-08-19 03:28:10 +0400 | [diff] [blame] | 157 | #define BCSR1_FETHIEN 0x08000000 |
| 158 | #define BCSR1_FETH_RST 0x04000000 |
| 159 | #define BCSR1_RS232_EN1 0x02000000 |
| 160 | #define BCSR1_RS232_EN2 0x01000000 |
Anton Vorontsov | 818fcac | 2009-08-19 03:28:17 +0400 | [diff] [blame] | 161 | #define BCSR3_USB_nEN 0x80000000 |
Anton Vorontsov | a70e88b | 2009-08-19 03:28:10 +0400 | [diff] [blame] | 162 | #define BCSR3_FETHIEN2 0x10000000 |
| 163 | #define BCSR3_FETH2_RST 0x08000000 |
| 164 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 165 | clrbits32(&bcsr[1], BCSR1_RS232_EN1 | BCSR1_RS232_EN2 | BCSR1_FETHIEN); |
| 166 | setbits32(&bcsr[1], BCSR1_FETH_RST); |
| 167 | |
| 168 | clrbits32(&bcsr[3], BCSR3_FETHIEN2); |
| 169 | setbits32(&bcsr[3], BCSR3_FETH2_RST); |
| 170 | |
Anton Vorontsov | 818fcac | 2009-08-19 03:28:17 +0400 | [diff] [blame] | 171 | clrbits32(&bcsr[3], BCSR3_USB_nEN); |
| 172 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 173 | iounmap(bcsr); |
| 174 | |
| 175 | init_ioports(); |
| 176 | pq2_init_pci(); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 177 | |
| 178 | if (ppc_md.progress) |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 179 | ppc_md.progress("mpc8272_ads_setup_arch(), finish", 0); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 180 | } |
| 181 | |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 182 | static struct of_device_id __initdata of_bus_ids[] = { |
| 183 | { .name = "soc", }, |
| 184 | { .name = "cpm", }, |
| 185 | { .name = "localbus", }, |
| 186 | {}, |
| 187 | }; |
| 188 | |
| 189 | static int __init declare_of_platform_devices(void) |
| 190 | { |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 191 | /* Publish the QE devices */ |
| 192 | of_platform_bus_probe(NULL, of_bus_ids, NULL); |
| 193 | return 0; |
| 194 | } |
Grant Likely | ca956f0 | 2008-01-24 22:23:24 -0700 | [diff] [blame] | 195 | machine_device_initcall(mpc8272_ads, declare_of_platform_devices); |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 196 | |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 197 | /* |
| 198 | * Called very early, device-tree isn't unflattened |
| 199 | */ |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 200 | static int __init mpc8272_ads_probe(void) |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 201 | { |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 202 | unsigned long root = of_get_flat_dt_root(); |
| 203 | return of_flat_dt_is_compatible(root, "fsl,mpc8272ads"); |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 204 | } |
| 205 | |
Scott Wood | 2d2294a | 2007-07-26 13:52:28 -0500 | [diff] [blame] | 206 | define_machine(mpc8272_ads) |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 207 | { |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 208 | .name = "Freescale MPC8272 ADS", |
| 209 | .probe = mpc8272_ads_probe, |
| 210 | .setup_arch = mpc8272_ads_setup_arch, |
| 211 | .init_IRQ = mpc8272_ads_pic_init, |
| 212 | .get_irq = cpm2_get_irq, |
Scott Wood | 4ff62e1 | 2007-08-27 16:56:43 -0500 | [diff] [blame] | 213 | .calibrate_decr = generic_calibrate_decr, |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 214 | .restart = pq2_restart, |
| 215 | .progress = udbg_progress, |
Vitaly Bordug | 91bd610 | 2006-10-02 22:45:17 +0400 | [diff] [blame] | 216 | }; |