| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* Analogue & Micro Adder MPC875 board support |
| 3 | * |
| 4 | * Author: Scott Wood <scottwood@freescale.com> |
| 5 | * |
| 6 | * Copyright (c) 2007 Freescale Semiconductor, Inc. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/fs_enet_pd.h> |
| 11 | #include <linux/of_platform.h> |
| 12 | |
| 13 | #include <asm/time.h> |
| 14 | #include <asm/machdep.h> |
| 15 | #include <asm/cpm1.h> |
| 16 | #include <asm/fs_pd.h> |
| 17 | #include <asm/udbg.h> |
| 18 | #include <asm/prom.h> |
| 19 | |
| 20 | #include "mpc8xx.h" |
| 21 | |
| 22 | struct cpm_pin { |
| 23 | int port, pin, flags; |
| 24 | }; |
| 25 | |
| 26 | static __initdata struct cpm_pin adder875_pins[] = { |
| 27 | /* SMC1 */ |
| 28 | {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */ |
| 29 | {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */ |
| 30 | |
| 31 | /* MII1 */ |
| 32 | {CPM_PORTA, 0, CPM_PIN_INPUT}, |
| 33 | {CPM_PORTA, 1, CPM_PIN_INPUT}, |
| 34 | {CPM_PORTA, 2, CPM_PIN_INPUT}, |
| 35 | {CPM_PORTA, 3, CPM_PIN_INPUT}, |
| 36 | {CPM_PORTA, 4, CPM_PIN_OUTPUT}, |
| 37 | {CPM_PORTA, 10, CPM_PIN_OUTPUT}, |
| 38 | {CPM_PORTA, 11, CPM_PIN_OUTPUT}, |
| 39 | {CPM_PORTB, 19, CPM_PIN_INPUT}, |
| 40 | {CPM_PORTB, 31, CPM_PIN_INPUT}, |
| 41 | {CPM_PORTC, 12, CPM_PIN_INPUT}, |
| 42 | {CPM_PORTC, 13, CPM_PIN_INPUT}, |
| 43 | {CPM_PORTE, 30, CPM_PIN_OUTPUT}, |
| 44 | {CPM_PORTE, 31, CPM_PIN_OUTPUT}, |
| 45 | |
| 46 | /* MII2 */ |
| 47 | {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 48 | {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 49 | {CPM_PORTE, 16, CPM_PIN_OUTPUT}, |
| 50 | {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 51 | {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 52 | {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 53 | {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 54 | {CPM_PORTE, 21, CPM_PIN_OUTPUT}, |
| 55 | {CPM_PORTE, 22, CPM_PIN_OUTPUT}, |
| 56 | {CPM_PORTE, 23, CPM_PIN_OUTPUT}, |
| 57 | {CPM_PORTE, 24, CPM_PIN_OUTPUT}, |
| 58 | {CPM_PORTE, 25, CPM_PIN_OUTPUT}, |
| 59 | {CPM_PORTE, 26, CPM_PIN_OUTPUT}, |
| 60 | {CPM_PORTE, 27, CPM_PIN_OUTPUT}, |
| 61 | {CPM_PORTE, 28, CPM_PIN_OUTPUT}, |
| 62 | {CPM_PORTE, 29, CPM_PIN_OUTPUT}, |
| 63 | }; |
| 64 | |
| 65 | static void __init init_ioports(void) |
| 66 | { |
| 67 | int i; |
| 68 | |
| 69 | for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) { |
| 70 | const struct cpm_pin *pin = &adder875_pins[i]; |
| 71 | cpm1_set_pin(pin->port, pin->pin, pin->flags); |
| 72 | } |
| 73 | |
| 74 | cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX); |
| 75 | |
| 76 | /* Set FEC1 and FEC2 to MII mode */ |
| 77 | clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180); |
| 78 | } |
| 79 | |
| 80 | static void __init adder875_setup(void) |
| 81 | { |
| 82 | cpm_reset(); |
| 83 | init_ioports(); |
| 84 | } |
| 85 | |
| 86 | static int __init adder875_probe(void) |
| 87 | { |
| 88 | return of_machine_is_compatible("analogue-and-micro,adder875"); |
| 89 | } |
| 90 | |
| 91 | static const struct of_device_id of_bus_ids[] __initconst = { |
| 92 | { .compatible = "simple-bus", }, |
| 93 | {}, |
| 94 | }; |
| 95 | |
| 96 | static int __init declare_of_platform_devices(void) |
| 97 | { |
| 98 | of_platform_bus_probe(NULL, of_bus_ids, NULL); |
| 99 | return 0; |
| 100 | } |
| 101 | machine_device_initcall(adder875, declare_of_platform_devices); |
| 102 | |
| 103 | define_machine(adder875) { |
| 104 | .name = "Adder MPC875", |
| 105 | .probe = adder875_probe, |
| 106 | .setup_arch = adder875_setup, |
| 107 | .init_IRQ = mpc8xx_pics_init, |
| 108 | .get_irq = mpc8xx_get_irq, |
| 109 | .restart = mpc8xx_restart, |
| 110 | .calibrate_decr = generic_calibrate_decr, |
| 111 | .progress = udbg_progress, |
| 112 | }; |