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 <mm/mmu_decl.h>
  30#include <asm/udbg.h>
  31
  32#include <sysdev/fsl_soc.h>
  33#include <sysdev/fsl_pci.h>
  34
  35#include "mpc85xx.h"
  36
  37#ifdef CONFIG_CPM2
  38#include <asm/cpm2.h>
  39#endif /* CONFIG_CPM2 */
  40
  41static void __init tqm85xx_pic_init(void)
  42{
  43        struct mpic *mpic = mpic_alloc(NULL, 0,
  44                        MPIC_BIG_ENDIAN,
  45                        0, 256, " OpenPIC  ");
  46        BUG_ON(mpic == NULL);
  47        mpic_init(mpic);
  48
  49        mpc85xx_cpm2_pic_init();
  50}
  51
  52/*
  53 * Setup the architecture
  54 */
  55static void __init tqm85xx_setup_arch(void)
  56{
  57        if (ppc_md.progress)
  58                ppc_md.progress("tqm85xx_setup_arch()", 0);
  59
  60#ifdef CONFIG_CPM2
  61        cpm2_reset();
  62#endif
  63
  64        fsl_pci_assign_primary();
  65}
  66
  67static void tqm85xx_show_cpuinfo(struct seq_file *m)
  68{
  69        uint pvid, svid, phid1;
  70
  71        pvid = mfspr(SPRN_PVR);
  72        svid = mfspr(SPRN_SVR);
  73
  74        seq_printf(m, "Vendor\t\t: TQ Components\n");
  75        seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  76        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  77
  78        /* Display cpu Pll setting */
  79        phid1 = mfspr(SPRN_HID1);
  80        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  81}
  82
  83static void tqm85xx_ti1520_fixup(struct pci_dev *pdev)
  84{
  85        unsigned int val;
  86
  87        /* Do not do the fixup on other platforms! */
  88        if (!machine_is(tqm85xx))
  89                return;
  90
  91        dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
  92
  93        /*
  94         * Enable P2CCLK bit in system control register
  95         * to enable CLOCK output to power chip
  96         */
  97        pci_read_config_dword(pdev, 0x80, &val);
  98        pci_write_config_dword(pdev, 0x80, val | (1 << 27));
  99
 100}
 101DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
 102                tqm85xx_ti1520_fixup);
 103
 104machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);
 105
 106static const char * const board[] __initconst = {
 107        "tqc,tqm8540",
 108        "tqc,tqm8541",
 109        "tqc,tqm8548",
 110        "tqc,tqm8555",
 111        "tqc,tqm8560",
 112        NULL
 113};
 114
 115/*
 116 * Called very early, device-tree isn't unflattened
 117 */
 118static int __init tqm85xx_probe(void)
 119{
 120        return of_device_compatible_match(of_root, board);
 121}
 122
 123define_machine(tqm85xx) {
 124        .name                   = "TQM85xx",
 125        .probe                  = tqm85xx_probe,
 126        .setup_arch             = tqm85xx_setup_arch,
 127        .init_IRQ               = tqm85xx_pic_init,
 128        .show_cpuinfo           = tqm85xx_show_cpuinfo,
 129        .get_irq                = mpic_get_irq,
 130        .calibrate_decr         = generic_calibrate_decr,
 131        .progress               = udbg_progress,
 132};
 133