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      1 /*	$NetBSD: cdmvar.h,v 1.1 2026/06/27 13:28:34 rkujawa Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2026 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa and Robert Swindells.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _POWERPC_MPC5200_CDMVAR_H_
     33 #define _POWERPC_MPC5200_CDMVAR_H_
     34 
     35 #include <sys/device.h>
     36 #include <sys/bus.h>
     37 
     38 struct cdm_softc {
     39 	device_t		sc_dev;
     40 	bus_space_tag_t		sc_iot;
     41 	bus_space_handle_t	sc_ioh;
     42 };
     43 
     44 /*
     45  * Public interface to the MPC5200B Clock Distribution Module (CDM).
     46  */
     47 
     48 uint32_t	mpc5200_cdm_get_xlb_freq(void);
     49 uint32_t	mpc5200_cdm_get_ipb_freq(void);
     50 uint32_t	mpc5200_cdm_get_pci_freq(void);
     51 uint32_t	mpc5200_cdm_get_core_freq(void);
     52 
     53 /*
     54  * Conservative fallback frequencies (Hz)
     55  */
     56 #define MPC5200_XLB_FREQ_DEFAULT	132000000
     57 #define MPC5200_IPB_FREQ_DEFAULT	 66000000
     58 #define MPC5200_PCI_FREQ_DEFAULT	 33000000
     59 #define MPC5200_CORE_FREQ_DEFAULT	396000000
     60 
     61 #endif /* _POWERPC_MPC5200_CDMVAR_H_ */
     62