1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * arch/powerpc/platforms/83xx/mpc837x_rdb.c
4 *
5 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
6 *
7 * MPC837x RDB board specific routines
8 */
9
10 #include <linux/pci.h>
11 #include <linux/of_platform.h>
12
13 #include <asm/time.h>
14 #include <asm/ipic.h>
15 #include <asm/udbg.h>
16 #include <sysdev/fsl_soc.h>
17 #include <sysdev/fsl_pci.h>
18
19 #include "mpc83xx.h"
20
mpc837x_rdb_sd_cfg(void)21 static void mpc837x_rdb_sd_cfg(void)
22 {
23 void __iomem *im;
24
25 im = ioremap(get_immrbase(), 0x1000);
26 if (!im) {
27 WARN_ON(1);
28 return;
29 }
30
31 /*
32 * On RDB boards (in contrast to MDS) USBB pins are used for SD only,
33 * so we can safely mux them away from the USB block.
34 */
35 clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK,
36 MPC837X_SICRL_SD);
37 clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK,
38 MPC837X_SICRH_SD);
39 iounmap(im);
40 }
41
42 /* ************************************************************************
43 *
44 * Setup the architecture
45 *
46 */
mpc837x_rdb_setup_arch(void)47 static void __init mpc837x_rdb_setup_arch(void)
48 {
49 mpc83xx_setup_arch();
50 mpc837x_usb_cfg();
51 mpc837x_rdb_sd_cfg();
52 }
53
54 machine_device_initcall(mpc837x_rdb, mpc83xx_declare_of_platform_devices);
55
56 static const char * const board[] __initconst = {
57 "fsl,mpc8377rdb",
58 "fsl,mpc8378rdb",
59 "fsl,mpc8379rdb",
60 "fsl,mpc8377wlan",
61 NULL
62 };
63
64 /*
65 * Called very early, MMU is off, device-tree isn't unflattened
66 */
mpc837x_rdb_probe(void)67 static int __init mpc837x_rdb_probe(void)
68 {
69 return of_device_compatible_match(of_root, board);
70 }
71
define_machine(mpc837x_rdb)72 define_machine(mpc837x_rdb) {
73 .name = "MPC837x RDB/WLAN",
74 .probe = mpc837x_rdb_probe,
75 .setup_arch = mpc837x_rdb_setup_arch,
76 .init_IRQ = mpc83xx_ipic_init_IRQ,
77 .get_irq = ipic_get_irq,
78 .restart = mpc83xx_restart,
79 .time_init = mpc83xx_time_init,
80 .calibrate_decr = generic_calibrate_decr,
81 .progress = udbg_progress,
82 };
83
