drivers/soc/renesas/r8a7795-sysc.c

   1 /*
   2  * Renesas R-Car H3 System Controller
   3  *
   4  * Copyright (C) 2016-2017 Glider bvba
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  */
  10
  11 #include <linux/bug.h>
  12 #include <linux/kernel.h>
  13 #include <linux/sys_soc.h>
  14
  15 #include <dt-bindings/power/r8a7795-sysc.h>
  16
  17 #include "rcar-sysc.h"
  18
  19 static struct rcar_sysc_area r8a7795_areas[] __initdata = {
  20         { "always-on",      0, 0, R8A7795_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
  21         { "ca57-scu",   0x1c0, 0, R8A7795_PD_CA57_SCU,  R8A7795_PD_ALWAYS_ON,
  22           PD_SCU },
  23         { "ca57-cpu0",   0x80, 0, R8A7795_PD_CA57_CPU0, R8A7795_PD_CA57_SCU,
  24           PD_CPU_NOCR },
  25         { "ca57-cpu1",   0x80, 1, R8A7795_PD_CA57_CPU1, R8A7795_PD_CA57_SCU,
  26           PD_CPU_NOCR },
  27         { "ca57-cpu2",   0x80, 2, R8A7795_PD_CA57_CPU2, R8A7795_PD_CA57_SCU,
  28           PD_CPU_NOCR },
  29         { "ca57-cpu3",   0x80, 3, R8A7795_PD_CA57_CPU3, R8A7795_PD_CA57_SCU,
  30           PD_CPU_NOCR },
  31         { "ca53-scu",   0x140, 0, R8A7795_PD_CA53_SCU,  R8A7795_PD_ALWAYS_ON,
  32           PD_SCU },
  33         { "ca53-cpu0",  0x200, 0, R8A7795_PD_CA53_CPU0, R8A7795_PD_CA53_SCU,
  34           PD_CPU_NOCR },
  35         { "ca53-cpu1",  0x200, 1, R8A7795_PD_CA53_CPU1, R8A7795_PD_CA53_SCU,
  36           PD_CPU_NOCR },
  37         { "ca53-cpu2",  0x200, 2, R8A7795_PD_CA53_CPU2, R8A7795_PD_CA53_SCU,
  38           PD_CPU_NOCR },
  39         { "ca53-cpu3",  0x200, 3, R8A7795_PD_CA53_CPU3, R8A7795_PD_CA53_SCU,
  40           PD_CPU_NOCR },
  41         { "a3vp",       0x340, 0, R8A7795_PD_A3VP,      R8A7795_PD_ALWAYS_ON },
  42         { "cr7",        0x240, 0, R8A7795_PD_CR7,       R8A7795_PD_ALWAYS_ON },
  43         { "a3vc",       0x380, 0, R8A7795_PD_A3VC,      R8A7795_PD_ALWAYS_ON },
  44         /* A2VC0 exists on ES1.x only */
  45         { "a2vc0",      0x3c0, 0, R8A7795_PD_A2VC0,     R8A7795_PD_A3VC },
  46         { "a2vc1",      0x3c0, 1, R8A7795_PD_A2VC1,     R8A7795_PD_A3VC },
  47         { "3dg-a",      0x100, 0, R8A7795_PD_3DG_A,     R8A7795_PD_ALWAYS_ON },
  48         { "3dg-b",      0x100, 1, R8A7795_PD_3DG_B,     R8A7795_PD_3DG_A },
  49         { "3dg-c",      0x100, 2, R8A7795_PD_3DG_C,     R8A7795_PD_3DG_B },
  50         { "3dg-d",      0x100, 3, R8A7795_PD_3DG_D,     R8A7795_PD_3DG_C },
  51         { "3dg-e",      0x100, 4, R8A7795_PD_3DG_E,     R8A7795_PD_3DG_D },
  52         { "a3ir",       0x180, 0, R8A7795_PD_A3IR,      R8A7795_PD_ALWAYS_ON },
  53 };
  54
  55
  56         /*
  57          * Fixups for R-Car H3 revisions after ES1.x
  58          */
  59
  60 static const struct soc_device_attribute r8a7795es1[] __initconst = {
  61         { .soc_id = "r8a7795", .revision = "ES1.*" },
  62         { /* sentinel */ }
  63 };
  64
  65 static int __init r8a7795_sysc_init(void)
  66 {
  67         if (!soc_device_match(r8a7795es1))
  68                 rcar_sysc_nullify(r8a7795_areas, ARRAY_SIZE(r8a7795_areas),
  69                                   R8A7795_PD_A2VC0);
  70
  71         return 0;
  72 }
  73
  74 const struct rcar_sysc_info r8a7795_sysc_info __initconst = {
  75         .init = r8a7795_sysc_init,
  76         .areas = r8a7795_areas,
  77         .num_areas = ARRAY_SIZE(r8a7795_areas),
  78 };