LXR linux/arch/powerpc/platforms/85xx/tqm85xx.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
   4 *
   5 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   6 *
   7 * Copyright 2008 Freescale Semiconductor Inc.
   8 *
   9 * Copyright (c) 2005-2006 DENX Software Engineering
  10 * Stefan Roese <sr@denx.de>
  11 *
  12 * Based on original work by
  13 *      Kumar Gala <kumar.gala@freescale.com>
  14 *      Copyright 2004 Freescale Semiconductor Inc.
  15 */
  16
  17#include <linux/stddef.h>
  18#include <linux/kernel.h>
  19#include <linux/pci.h>
  20#include <linux/kdev_t.h>
  21#include <linux/delay.h>
  22#include <linux/seq_file.h>
  23#include <linux/of_platform.h>
  24
  25#include <asm/time.h>
  26#include <asm/machdep.h>
  27#include <asm/pci-bridge.h>
  28#include <asm/mpic.h>
  29#include <asm/prom.h>
  30#include <mm/mmu_decl.h>
  31#include <asm/udbg.h>
  32
  33#include <sysdev/fsl_soc.h>
  34#include <sysdev/fsl_pci.h>
  35
  36#include "mpc85xx.h"
  37
  38#ifdef CONFIG_CPM2
  39#include <asm/cpm2.h>
  40#endif /* CONFIG_CPM2 */
  41
  42static void __init tqm85xx_pic_init(void)
  43{
  44        struct mpic *mpic = mpic_alloc(NULL, 0,
  45                        MPIC_BIG_ENDIAN,
  46                        0, 256, " OpenPIC  ");
  47        BUG_ON(mpic == NULL);
  48        mpic_init(mpic);
  49
  50        mpc85xx_cpm2_pic_init();
  51}
  52
  53/*
  54 * Setup the architecture
  55 */
  56static void __init tqm85xx_setup_arch(void)
  57{
  58        if (ppc_md.progress)
  59                ppc_md.progress("tqm85xx_setup_arch()", 0);
  60
  61#ifdef CONFIG_CPM2
  62        cpm2_reset();
  63#endif
  64
  65        fsl_pci_assign_primary();
  66}
  67
  68static void tqm85xx_show_cpuinfo(struct seq_file *m)
  69{
  70        uint pvid, svid, phid1;
  71
  72        pvid = mfspr(SPRN_PVR);
  73        svid = mfspr(SPRN_SVR);
  74
  75        seq_printf(m, "Vendor\t\t: TQ Components\n");
  76        seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  77        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  78
  79        /* Display cpu Pll setting */
  80        phid1 = mfspr(SPRN_HID1);
  81        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  82}
  83
  84static void tqm85xx_ti1520_fixup(struct pci_dev *pdev)
  85{
  86        unsigned int val;
  87
  88        /* Do not do the fixup on other platforms! */
  89        if (!machine_is(tqm85xx))
  90                return;
  91
  92        dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
  93
  94        /*
  95         * Enable P2CCLK bit in system control register
  96         * to enable CLOCK output to power chip
  97         */
  98        pci_read_config_dword(pdev, 0x80, &val);
  99        pci_write_config_dword(pdev, 0x80, val | (1 << 27));
 100
 101}
 102DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
 103                tqm85xx_ti1520_fixup);
 104
 105machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);
 106
 107static const char * const board[] __initconst = {
 108        "tqc,tqm8540",
 109        "tqc,tqm8541",
 110        "tqc,tqm8548",
 111        "tqc,tqm8555",
 112        "tqc,tqm8560",
 113        NULL
 114};
 115
 116/*
 117 * Called very early, device-tree isn't unflattened
 118 */
 119static int __init tqm85xx_probe(void)
 120{
 121        return of_device_compatible_match(of_root, board);
 122}
 123
 124define_machine(tqm85xx) {
 125        .name                   = "TQM85xx",
 126        .probe                  = tqm85xx_probe,
 127        .setup_arch             = tqm85xx_setup_arch,
 128        .init_IRQ               = tqm85xx_pic_init,
 129        .show_cpuinfo           = tqm85xx_show_cpuinfo,
 130        .get_irq                = mpic_get_irq,
 131        .calibrate_decr         = generic_calibrate_decr,
 132        .progress               = udbg_progress,
 133};
 134