1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Renesas R-Car H3 System Controller
4  *
5  * Copyright (C) 2016-2017 Glider bvba
6  */
7 
8 #include <linux/bits.h>
9 #include <linux/kernel.h>
10 #include <linux/sys_soc.h>
11 
12 #include <dt-bindings/power/r8a7795-sysc.h>
13 
14 #include "rcar-sysc.h"
15 
16 static struct rcar_sysc_area r8a7795_areas[] __initdata = {
17 	{ "always-on",	    0, 0, R8A7795_PD_ALWAYS_ON,	-1, PD_ALWAYS_ON },
18 	{ "ca57-scu",	0x1c0, 0, R8A7795_PD_CA57_SCU,	R8A7795_PD_ALWAYS_ON,
19 	  PD_SCU },
20 	{ "ca57-cpu0",	 0x80, 0, R8A7795_PD_CA57_CPU0,	R8A7795_PD_CA57_SCU,
21 	  PD_CPU_NOCR },
22 	{ "ca57-cpu1",	 0x80, 1, R8A7795_PD_CA57_CPU1,	R8A7795_PD_CA57_SCU,
23 	  PD_CPU_NOCR },
24 	{ "ca57-cpu2",	 0x80, 2, R8A7795_PD_CA57_CPU2,	R8A7795_PD_CA57_SCU,
25 	  PD_CPU_NOCR },
26 	{ "ca57-cpu3",	 0x80, 3, R8A7795_PD_CA57_CPU3,	R8A7795_PD_CA57_SCU,
27 	  PD_CPU_NOCR },
28 	{ "ca53-scu",	0x140, 0, R8A7795_PD_CA53_SCU,	R8A7795_PD_ALWAYS_ON,
29 	  PD_SCU },
30 	{ "ca53-cpu0",	0x200, 0, R8A7795_PD_CA53_CPU0,	R8A7795_PD_CA53_SCU,
31 	  PD_CPU_NOCR },
32 	{ "ca53-cpu1",	0x200, 1, R8A7795_PD_CA53_CPU1,	R8A7795_PD_CA53_SCU,
33 	  PD_CPU_NOCR },
34 	{ "ca53-cpu2",	0x200, 2, R8A7795_PD_CA53_CPU2,	R8A7795_PD_CA53_SCU,
35 	  PD_CPU_NOCR },
36 	{ "ca53-cpu3",	0x200, 3, R8A7795_PD_CA53_CPU3,	R8A7795_PD_CA53_SCU,
37 	  PD_CPU_NOCR },
38 	{ "a3vp",	0x340, 0, R8A7795_PD_A3VP,	R8A7795_PD_ALWAYS_ON },
39 	{ "cr7",	0x240, 0, R8A7795_PD_CR7,	R8A7795_PD_ALWAYS_ON },
40 	{ "a3vc",	0x380, 0, R8A7795_PD_A3VC,	R8A7795_PD_ALWAYS_ON },
41 	{ "a2vc1",	0x3c0, 1, R8A7795_PD_A2VC1,	R8A7795_PD_A3VC },
42 	{ "3dg-a",	0x100, 0, R8A7795_PD_3DG_A,	R8A7795_PD_ALWAYS_ON },
43 	{ "3dg-b",	0x100, 1, R8A7795_PD_3DG_B,	R8A7795_PD_3DG_A },
44 	{ "3dg-c",	0x100, 2, R8A7795_PD_3DG_C,	R8A7795_PD_3DG_B },
45 	{ "3dg-d",	0x100, 3, R8A7795_PD_3DG_D,	R8A7795_PD_3DG_C },
46 	{ "3dg-e",	0x100, 4, R8A7795_PD_3DG_E,	R8A7795_PD_3DG_D },
47 	{ "a3ir",	0x180, 0, R8A7795_PD_A3IR,	R8A7795_PD_ALWAYS_ON },
48 };
49 
50 
51 	/*
52 	 * Fixups for R-Car H3 revisions
53 	 */
54 
55 #define NO_EXTMASK	BIT(1)		/* Missing SYSCEXTMASK register */
56 
57 static const struct soc_device_attribute r8a7795_quirks_match[] __initconst = {
58 	{
59 		.soc_id = "r8a7795", .revision = "ES2.*",
60 		.data = (void *)(NO_EXTMASK),
61 	},
62 	{ /* sentinel */ }
63 };
64 
65 static int __init r8a7795_sysc_init(void)
66 {
67 	const struct soc_device_attribute *attr;
68 	u32 quirks = 0;
69 
70 	attr = soc_device_match(r8a7795_quirks_match);
71 	if (attr)
72 		quirks = (uintptr_t)attr->data;
73 
74 	if (quirks & NO_EXTMASK)
75 		r8a7795_sysc_info.extmask_val = 0;
76 
77 	return 0;
78 }
79 
80 struct rcar_sysc_info r8a7795_sysc_info __initdata = {
81 	.init = r8a7795_sysc_init,
82 	.areas = r8a7795_areas,
83 	.num_areas = ARRAY_SIZE(r8a7795_areas),
84 	.extmask_offs = 0x2f8,
85 	.extmask_val = BIT(0),
86 };
87