drivers/soc/renesas/r8a774c0-sysc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Renesas RZ/G2E System Controller
   4  * Copyright (C) 2018 Renesas Electronics Corp.
   5  *
   6  * Based on Renesas R-Car E3 System Controller
   7  */
   8
   9 #include <linux/bits.h>
  10 #include <linux/kernel.h>
  11 #include <linux/sys_soc.h>
  12
  13 #include <dt-bindings/power/r8a774c0-sysc.h>
  14
  15 #include "rcar-sysc.h"
  16
  17 static struct rcar_sysc_area r8a774c0_areas[] __initdata = {
  18         { "always-on",      0, 0, R8A774C0_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
  19         { "ca53-scu",   0x140, 0, R8A774C0_PD_CA53_SCU,  R8A774C0_PD_ALWAYS_ON,
  20           PD_SCU },
  21         { "ca53-cpu0",  0x200, 0, R8A774C0_PD_CA53_CPU0, R8A774C0_PD_CA53_SCU,
  22           PD_CPU_NOCR },
  23         { "ca53-cpu1",  0x200, 1, R8A774C0_PD_CA53_CPU1, R8A774C0_PD_CA53_SCU,
  24           PD_CPU_NOCR },
  25         { "a3vc",       0x380, 0, R8A774C0_PD_A3VC,     R8A774C0_PD_ALWAYS_ON },
  26         { "a2vc1",      0x3c0, 1, R8A774C0_PD_A2VC1,    R8A774C0_PD_A3VC },
  27         { "3dg-a",      0x100, 0, R8A774C0_PD_3DG_A,    R8A774C0_PD_ALWAYS_ON },
  28         { "3dg-b",      0x100, 1, R8A774C0_PD_3DG_B,    R8A774C0_PD_3DG_A },
  29 };
  30
  31 /* Fixups for RZ/G2E ES1.0 revision */
  32 static const struct soc_device_attribute r8a774c0[] __initconst = {
  33         { .soc_id = "r8a774c0", .revision = "ES1.0" },
  34         { /* sentinel */ }
  35 };
  36
  37 static int __init r8a774c0_sysc_init(void)
  38 {
  39         if (soc_device_match(r8a774c0)) {
  40                 /* Fix incorrect 3DG hierarchy */
  41                 swap(r8a774c0_areas[6], r8a774c0_areas[7]);
  42                 r8a774c0_areas[6].parent = R8A774C0_PD_ALWAYS_ON;
  43                 r8a774c0_areas[7].parent = R8A774C0_PD_3DG_B;
  44         }
  45
  46         return 0;
  47 }
  48
  49 const struct rcar_sysc_info r8a774c0_sysc_info __initconst = {
  50         .init = r8a774c0_sysc_init,
  51         .areas = r8a774c0_areas,
  52         .num_areas = ARRAY_SIZE(r8a774c0_areas),
  53         .extmask_offs = 0x2f8,
  54         .extmask_val = BIT(0),
  55 };