2 * arch/powerpc/platforms/83xx/mpc832x_rdb.c
4 * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
7 * MPC832x RDB board specific routines.
8 * This file is based on mpc832x_mds.c and mpc8313_rdb.c
9 * Author: Michael Barkowski <michael.barkowski@freescale.com>
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/pci.h>
18 #include <linux/interrupt.h>
19 #include <linux/spi/spi.h>
20 #include <linux/spi/mmc_spi.h>
21 #include <linux/mmc/host.h>
22 #include <linux/of_platform.h>
28 #include <asm/qe_ic.h>
29 #include <sysdev/fsl_soc.h>
35 #define DBG(fmt...) udbg_printf(fmt)
40 static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity)
42 pr_debug("%s %d %d\n", __func__, cs, polarity);
43 par_io_data_set(3, 13, polarity);
46 static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity)
48 pr_debug("%s %d %d\n", __func__, cs, polarity);
49 par_io_data_set(3, 13, !polarity);
52 static struct mmc_spi_platform_data mpc832x_mmc_pdata = {
53 .ocr_mask = MMC_VDD_33_34,
56 static struct spi_board_info mpc832x_spi_boardinfo = {
59 .max_speed_hz = 50000000,
60 .modalias = "mmc_spi",
61 .platform_data = &mpc832x_mmc_pdata,
64 static int __init mpc832x_spi_init(void)
66 par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
67 par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
68 par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */
69 par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */
71 par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */
72 par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
73 par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
75 return fsl_spi_init(&mpc832x_spi_boardinfo, 1,
76 mpc83xx_spi_activate_cs,
77 mpc83xx_spi_deactivate_cs);
80 machine_device_initcall(mpc832x_rdb, mpc832x_spi_init);
82 /* ************************************************************************
84 * Setup the architecture
87 static void __init mpc832x_rdb_setup_arch(void)
89 #if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE)
90 struct device_node *np;
94 ppc_md.progress("mpc832x_rdb_setup_arch()", 0);
97 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
98 mpc83xx_add_bridge(np);
101 #ifdef CONFIG_QUICC_ENGINE
104 if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
108 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
109 par_io_of_config(np);
111 #endif /* CONFIG_QUICC_ENGINE */
114 static struct of_device_id mpc832x_ids[] = {
116 { .compatible = "soc", },
118 { .compatible = "fsl,qe", },
122 static int __init mpc832x_declare_of_platform_devices(void)
124 /* Publish the QE devices */
125 of_platform_bus_probe(NULL, mpc832x_ids, NULL);
129 machine_device_initcall(mpc832x_rdb, mpc832x_declare_of_platform_devices);
131 void __init mpc832x_rdb_init_IRQ(void)
134 struct device_node *np;
136 np = of_find_node_by_type(NULL, "ipic");
142 /* Initialize the default interrupt mapping priorities,
143 * in case the boot rom changed something on us.
145 ipic_set_default_priority();
148 #ifdef CONFIG_QUICC_ENGINE
149 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
151 np = of_find_node_by_type(NULL, "qeic");
155 qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
157 #endif /* CONFIG_QUICC_ENGINE */
161 * Called very early, MMU is off, device-tree isn't unflattened
163 static int __init mpc832x_rdb_probe(void)
165 unsigned long root = of_get_flat_dt_root();
167 return of_flat_dt_is_compatible(root, "MPC832xRDB");
170 define_machine(mpc832x_rdb) {
171 .name = "MPC832x RDB",
172 .probe = mpc832x_rdb_probe,
173 .setup_arch = mpc832x_rdb_setup_arch,
174 .init_IRQ = mpc832x_rdb_init_IRQ,
175 .get_irq = ipic_get_irq,
176 .restart = mpc83xx_restart,
177 .time_init = mpc83xx_time_init,
178 .calibrate_decr = generic_calibrate_decr,
179 .progress = udbg_progress,