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/bug.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
rcar_sysc_fix_parent(struct rcar_sysc_area * areas,unsigned int num_areas,u8 id,int new_parent)31 static void __init rcar_sysc_fix_parent(struct rcar_sysc_area *areas,
32 unsigned int num_areas, u8 id,
33 int new_parent)
34 {
35 unsigned int i;
36
37 for (i = 0; i < num_areas; i++)
38 if (areas[i].isr_bit == id) {
39 areas[i].parent = new_parent;
40 return;
41 }
42 }
43
44 /* Fixups for R-Car E3 ES1.0 revision */
45 static const struct soc_device_attribute r8a77990[] __initconst = {
46 { .soc_id = "r8a77990", .revision = "ES1.0" },
47 { /* sentinel */ }
48 };
49
r8a77990_sysc_init(void)50 static int __init r8a77990_sysc_init(void)
51 {
52 if (soc_device_match(r8a77990)) {
53 rcar_sysc_fix_parent(r8a77990_areas,
54 ARRAY_SIZE(r8a77990_areas),
55 R8A77990_PD_3DG_A, R8A77990_PD_3DG_B);
56 rcar_sysc_fix_parent(r8a77990_areas,
57 ARRAY_SIZE(r8a77990_areas),
58 R8A77990_PD_3DG_B, R8A77990_PD_ALWAYS_ON);
59 }
60
61 return 0;
62 }
63
64 const struct rcar_sysc_info r8a77990_sysc_info __initconst = {
65 .init = r8a77990_sysc_init,
66 .areas = r8a77990_areas,
67 .num_areas = ARRAY_SIZE(r8a77990_areas),
68 };
69
