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