arch/powerpc/platforms/83xx/mpc837x_rdb.c

   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
  21 static void __init 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  */
  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  */
  67 static int __init mpc837x_rdb_probe(void)
  68 {
  69         return of_device_compatible_match(of_root, board);
  70 }
  71
  72 define_machine(mpc837x_rdb) {
  73         .name                   = "MPC837x RDB/WLAN",
  74         .probe                  = mpc837x_rdb_probe,
  75         .setup_arch             = mpc837x_rdb_setup_arch,
  76         .discover_phbs          = mpc83xx_setup_pci,
  77         .init_IRQ               = mpc83xx_ipic_init_IRQ,
  78         .get_irq                = ipic_get_irq,
  79         .restart                = mpc83xx_restart,
  80         .time_init              = mpc83xx_time_init,
  81         .progress               = udbg_progress,
  82 };