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.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
115define_machine(tqm85xx) {
116	.name			= "TQM85xx",
117	.compatibles		= board,
118	.setup_arch		= tqm85xx_setup_arch,
119	.init_IRQ		= tqm85xx_pic_init,
120	.show_cpuinfo		= tqm85xx_show_cpuinfo,
121	.get_irq		= mpic_get_irq,
122	.progress		= udbg_progress,
123};