drivers/clk/davinci/pll-dm365.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * PLL clock descriptions for TI DM365
   4  *
   5  * Copyright (C) 2018 David Lechner <david@lechnology.com>
   6  */
   7
   8 #include <linux/bitops.h>
   9 #include <linux/clkdev.h>
  10 #include <linux/clk/davinci.h>
  11 #include <linux/init.h>
  12 #include <linux/kernel.h>
  13 #include <linux/types.h>
  14
  15 #include "pll.h"
  16
  17 #define OCSEL_OCSRC_ENABLE      0
  18
  19 static const struct davinci_pll_clk_info dm365_pll1_info = {
  20         .name = "pll1",
  21         .pllm_mask = GENMASK(9, 0),
  22         .pllm_min = 1,
  23         .pllm_max = 1023,
  24         .flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_HAS_POSTDIV |
  25                  PLL_POSTDIV_ALWAYS_ENABLED | PLL_PLLM_2X,
  26 };
  27
  28 SYSCLK(1, pll1_sysclk1, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  29 SYSCLK(2, pll1_sysclk2, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  30 SYSCLK(3, pll1_sysclk3, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  31 SYSCLK(4, pll1_sysclk4, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  32 SYSCLK(5, pll1_sysclk5, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  33 SYSCLK(6, pll1_sysclk6, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  34 SYSCLK(7, pll1_sysclk7, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  35 SYSCLK(8, pll1_sysclk8, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  36 SYSCLK(9, pll1_sysclk9, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
  37
  38 /*
  39  * This is a bit of a hack to make OCSEL[OCSRC] on DM365 look like OCSEL[OCSRC]
  40  * on DA850. On DM365, OCSEL[OCSRC] is just an enable/disable bit instead of a
  41  * multiplexer. By modeling it as a single parent mux clock, the clock code will
  42  * still do the right thing in this case.
  43  */
  44 static const char * const dm365_pll_obsclk_parent_names[] = {
  45         "oscin",
  46 };
  47
  48 static u32 dm365_pll_obsclk_table[] = {
  49         OCSEL_OCSRC_ENABLE,
  50 };
  51
  52 static const struct davinci_pll_obsclk_info dm365_pll1_obsclk_info = {
  53         .name = "pll1_obsclk",
  54         .parent_names = dm365_pll_obsclk_parent_names,
  55         .num_parents = ARRAY_SIZE(dm365_pll_obsclk_parent_names),
  56         .table = dm365_pll_obsclk_table,
  57         .ocsrc_mask = BIT(4),
  58 };
  59
  60 int dm365_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
  61 {
  62         struct clk *clk;
  63
  64         davinci_pll_clk_register(dev, &dm365_pll1_info, "ref_clk", base, cfgchip);
  65
  66         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk1, base);
  67         clk_register_clkdev(clk, "pll1_sysclk1", "dm365-psc");
  68
  69         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk2, base);
  70         clk_register_clkdev(clk, "pll1_sysclk2", "dm365-psc");
  71
  72         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk3, base);
  73         clk_register_clkdev(clk, "pll1_sysclk3", "dm365-psc");
  74
  75         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk4, base);
  76         clk_register_clkdev(clk, "pll1_sysclk4", "dm365-psc");
  77
  78         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk5, base);
  79         clk_register_clkdev(clk, "pll1_sysclk5", "dm365-psc");
  80
  81         davinci_pll_sysclk_register(dev, &pll1_sysclk6, base);
  82
  83         davinci_pll_sysclk_register(dev, &pll1_sysclk7, base);
  84
  85         clk = davinci_pll_sysclk_register(dev, &pll1_sysclk8, base);
  86         clk_register_clkdev(clk, "pll1_sysclk8", "dm365-psc");
  87
  88         davinci_pll_sysclk_register(dev, &pll1_sysclk9, base);
  89
  90         clk = davinci_pll_auxclk_register(dev, "pll1_auxclk", base);
  91         clk_register_clkdev(clk, "pll1_auxclk", "dm355-psc");
  92
  93         davinci_pll_sysclkbp_clk_register(dev, "pll1_sysclkbp", base);
  94
  95         davinci_pll_obsclk_register(dev, &dm365_pll1_obsclk_info, base);
  96
  97         return 0;
  98 }
  99
 100 static const struct davinci_pll_clk_info dm365_pll2_info = {
 101         .name = "pll2",
 102         .pllm_mask = GENMASK(9, 0),
 103         .pllm_min = 1,
 104         .pllm_max = 1023,
 105         .flags = PLL_HAS_PREDIV | PLL_HAS_POSTDIV | PLL_POSTDIV_ALWAYS_ENABLED |
 106                  PLL_PLLM_2X,
 107 };
 108
 109 SYSCLK(1, pll2_sysclk1, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED);
 110 SYSCLK(2, pll2_sysclk2, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED);
 111 SYSCLK(3, pll2_sysclk3, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED);
 112 SYSCLK(4, pll2_sysclk4, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED);
 113 SYSCLK(5, pll2_sysclk5, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED);
 114
 115 static const struct davinci_pll_obsclk_info dm365_pll2_obsclk_info = {
 116         .name = "pll2_obsclk",
 117         .parent_names = dm365_pll_obsclk_parent_names,
 118         .num_parents = ARRAY_SIZE(dm365_pll_obsclk_parent_names),
 119         .table = dm365_pll_obsclk_table,
 120         .ocsrc_mask = BIT(4),
 121 };
 122
 123 int dm365_pll2_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
 124 {
 125         struct clk *clk;
 126
 127         davinci_pll_clk_register(dev, &dm365_pll2_info, "oscin", base, cfgchip);
 128
 129         davinci_pll_sysclk_register(dev, &pll2_sysclk1, base);
 130
 131         clk = davinci_pll_sysclk_register(dev, &pll2_sysclk2, base);
 132         clk_register_clkdev(clk, "pll1_sysclk2", "dm365-psc");
 133
 134         davinci_pll_sysclk_register(dev, &pll2_sysclk3, base);
 135
 136         clk = davinci_pll_sysclk_register(dev, &pll2_sysclk4, base);
 137         clk_register_clkdev(clk, "pll1_sysclk4", "dm365-psc");
 138
 139         davinci_pll_sysclk_register(dev, &pll2_sysclk5, base);
 140
 141         davinci_pll_auxclk_register(dev, "pll2_auxclk", base);
 142
 143         davinci_pll_obsclk_register(dev, &dm365_pll2_obsclk_info, base);
 144
 145         return 0;
 146 }