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
tqm85xx_pic_init(void)42 static 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 */
tqm85xx_setup_arch(void)56 static 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
tqm85xx_show_cpuinfo(struct seq_file * m)68 static 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
tqm85xx_ti1520_fixup(struct pci_dev * pdev)84 static 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 }
102 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
103 tqm85xx_ti1520_fixup);
104
105 machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);
106
107 static 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 */
tqm85xx_probe(void)119 static int __init tqm85xx_probe(void)
120 {
121 return of_device_compatible_match(of_root, board);
122 }
123
define_machine(tqm85xx)124 define_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
