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 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 .calibrate_decr = generic_calibrate_decr, 82 .progress = udbg_progress, 83 }; 84