1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Renesas R-Car E3 System Controller
4  *
5  * Copyright (C) 2018 Renesas Electronics Corp.
6  */
7 
8 #include <linux/bits.h>
9 #include <linux/kernel.h>
10 #include <linux/sys_soc.h>
11 
12 #include <dt-bindings/power/r8a77990-sysc.h>
13 
14 #include "rcar-sysc.h"
15 
16 static struct rcar_sysc_area r8a77990_areas[] __initdata = {
17 	{ "always-on",	    0, 0, R8A77990_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
18 	{ "ca53-scu",	0x140, 0, R8A77990_PD_CA53_SCU,  R8A77990_PD_ALWAYS_ON,
19 	  PD_SCU },
20 	{ "ca53-cpu0",	0x200, 0, R8A77990_PD_CA53_CPU0, R8A77990_PD_CA53_SCU,
21 	  PD_CPU_NOCR },
22 	{ "ca53-cpu1",	0x200, 1, R8A77990_PD_CA53_CPU1, R8A77990_PD_CA53_SCU,
23 	  PD_CPU_NOCR },
24 	{ "cr7",	0x240, 0, R8A77990_PD_CR7,	R8A77990_PD_ALWAYS_ON },
25 	{ "a3vc",	0x380, 0, R8A77990_PD_A3VC,	R8A77990_PD_ALWAYS_ON },
26 	{ "a2vc1",	0x3c0, 1, R8A77990_PD_A2VC1,	R8A77990_PD_A3VC },
27 	{ "3dg-a",	0x100, 0, R8A77990_PD_3DG_A,	R8A77990_PD_ALWAYS_ON },
28 	{ "3dg-b",	0x100, 1, R8A77990_PD_3DG_B,	R8A77990_PD_3DG_A },
29 };
30 
31 /* Fixups for R-Car E3 ES1.0 revision */
32 static const struct soc_device_attribute r8a77990[] __initconst = {
33 	{ .soc_id = "r8a77990", .revision = "ES1.0" },
34 	{ /* sentinel */ }
35 };
36 
r8a77990_sysc_init(void)37 static int __init r8a77990_sysc_init(void)
38 {
39 	if (soc_device_match(r8a77990)) {
40 		/* Fix incorrect 3DG hierarchy */
41 		swap(r8a77990_areas[7], r8a77990_areas[8]);
42 		r8a77990_areas[7].parent = R8A77990_PD_ALWAYS_ON;
43 		r8a77990_areas[8].parent = R8A77990_PD_3DG_B;
44 	}
45 
46 	return 0;
47 }
48 
49 const struct rcar_sysc_info r8a77990_sysc_info __initconst = {
50 	.init = r8a77990_sysc_init,
51 	.areas = r8a77990_areas,
52 	.num_areas = ARRAY_SIZE(r8a77990_areas),
53 	.extmask_offs = 0x2f8,
54 	.extmask_val = BIT(0),
55 };
56