drivers/clk/renesas/r9a07g044-cpg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * RZ/G2L CPG driver
   4  *
   5  * Copyright (C) 2021 Renesas Electronics Corp.
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/device.h>
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12
  13 #include <dt-bindings/clock/r9a07g044-cpg.h>
  14
  15 #include "renesas-rzg2l-cpg.h"
  16
  17 enum clk_ids {
  18         /* Core Clock Outputs exported to DT */
  19         LAST_DT_CORE_CLK = R9A07G044_OSCCLK,
  20
  21         /* External Input Clocks */
  22         CLK_EXTAL,
  23
  24         /* Internal Core Clocks */
  25         CLK_OSC_DIV1000,
  26         CLK_PLL1,
  27         CLK_PLL2,
  28         CLK_PLL2_DIV2,
  29         CLK_PLL2_DIV16,
  30         CLK_PLL2_DIV20,
  31         CLK_PLL3,
  32         CLK_PLL3_DIV2,
  33         CLK_PLL3_DIV4,
  34         CLK_PLL3_DIV8,
  35         CLK_PLL4,
  36         CLK_PLL5,
  37         CLK_PLL5_DIV2,
  38         CLK_PLL6,
  39
  40         /* Module Clocks */
  41         MOD_CLK_BASE,
  42 };
  43
  44 /* Divider tables */
  45 static const struct clk_div_table dtable_3b[] = {
  46         {0, 1},
  47         {1, 2},
  48         {2, 4},
  49         {3, 8},
  50         {4, 32},
  51 };
  52
  53 static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
  54         /* External Clock Inputs */
  55         DEF_INPUT("extal", CLK_EXTAL),
  56
  57         /* Internal Core Clocks */
  58         DEF_FIXED(".osc", R9A07G044_OSCCLK, CLK_EXTAL, 1, 1),
  59         DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
  60         DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)),
  61         DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 133, 2),
  62         DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 133, 2),
  63
  64         DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
  65         DEF_FIXED(".pll2_div16", CLK_PLL2_DIV16, CLK_PLL2, 1, 16),
  66         DEF_FIXED(".pll2_div20", CLK_PLL2_DIV20, CLK_PLL2, 1, 20),
  67
  68         DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
  69         DEF_FIXED(".pll3_div4", CLK_PLL3_DIV4, CLK_PLL3, 1, 4),
  70         DEF_FIXED(".pll3_div8", CLK_PLL3_DIV8, CLK_PLL3, 1, 8),
  71
  72         /* Core output clk */
  73         DEF_FIXED("I", R9A07G044_CLK_I, CLK_PLL1, 1, 1),
  74         DEF_DIV("P0", R9A07G044_CLK_P0, CLK_PLL2_DIV16, DIVPL2A,
  75                 dtable_3b, CLK_DIVIDER_HIWORD_MASK),
  76         DEF_FIXED("TSU", R9A07G044_CLK_TSU, CLK_PLL2_DIV20, 1, 1),
  77         DEF_DIV("P1", R9A07G044_CLK_P1, CLK_PLL3_DIV8,
  78                 DIVPL3B, dtable_3b, CLK_DIVIDER_HIWORD_MASK),
  79 };
  80
  81 static struct rzg2l_mod_clk r9a07g044_mod_clks[] = {
  82         DEF_MOD("gic",          R9A07G044_CLK_GIC600,
  83                                 R9A07G044_CLK_P1,
  84                                 0x514, BIT(0), (BIT(0) | BIT(1))),
  85         DEF_MOD("ia55",         R9A07G044_CLK_IA55,
  86                                 R9A07G044_CLK_P1,
  87                                 0x518, (BIT(0) | BIT(1)), BIT(0)),
  88         DEF_MOD("scif0",        R9A07G044_CLK_SCIF0,
  89                                 R9A07G044_CLK_P0,
  90                                 0x584, BIT(0), BIT(0)),
  91         DEF_MOD("scif1",        R9A07G044_CLK_SCIF1,
  92                                 R9A07G044_CLK_P0,
  93                                 0x584, BIT(1), BIT(1)),
  94         DEF_MOD("scif2",        R9A07G044_CLK_SCIF2,
  95                                 R9A07G044_CLK_P0,
  96                                 0x584, BIT(2), BIT(2)),
  97         DEF_MOD("scif3",        R9A07G044_CLK_SCIF3,
  98                                 R9A07G044_CLK_P0,
  99                                 0x584, BIT(3), BIT(3)),
 100         DEF_MOD("scif4",        R9A07G044_CLK_SCIF4,
 101                                 R9A07G044_CLK_P0,
 102                                 0x584, BIT(4), BIT(4)),
 103         DEF_MOD("sci0",         R9A07G044_CLK_SCI0,
 104                                 R9A07G044_CLK_P0,
 105                                 0x588, BIT(0), BIT(0)),
 106 };
 107
 108 static const unsigned int r9a07g044_crit_mod_clks[] __initconst = {
 109         MOD_CLK_BASE + R9A07G044_CLK_GIC600,
 110 };
 111
 112 const struct rzg2l_cpg_info r9a07g044_cpg_info = {
 113         /* Core Clocks */
 114         .core_clks = r9a07g044_core_clks,
 115         .num_core_clks = ARRAY_SIZE(r9a07g044_core_clks),
 116         .last_dt_core_clk = LAST_DT_CORE_CLK,
 117         .num_total_core_clks = MOD_CLK_BASE,
 118
 119         /* Critical Module Clocks */
 120         .crit_mod_clks = r9a07g044_crit_mod_clks,
 121         .num_crit_mod_clks = ARRAY_SIZE(r9a07g044_crit_mod_clks),
 122
 123         /* Module Clocks */
 124         .mod_clks = r9a07g044_mod_clks,
 125         .num_mod_clks = ARRAY_SIZE(r9a07g044_mod_clks),
 126         .num_hw_mod_clks = R9A07G044_CLK_MIPI_DSI_PIN + 1,
 127 };