drivers/clk/mediatek/clk-mt7981-apmixed.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2021 MediaTek Inc.
   4  * Author: Sam Shih <sam.shih@mediatek.com>
   5  * Author: Wenzhen Yu <wenzhen.yu@mediatek.com>
   6  * Author: Jianhui Zhao <zhaojh329@gmail.com>
   7  * Author: Daniel Golle <daniel@makrotopia.org>
   8  */
   9
  10 #include <linux/clk-provider.h>
  11 #include <linux/mod_devicetable.h>
  12 #include <linux/platform_device.h>
  13
  14 #include "clk-gate.h"
  15 #include "clk-mtk.h"
  16 #include "clk-mux.h"
  17 #include "clk-pll.h"
  18
  19 #include <dt-bindings/clock/mediatek,mt7981-clk.h>
  20 #include <linux/clk.h>
  21
  22 #define MT7981_PLL_FMAX (2500UL * MHZ)
  23 #define CON0_MT7981_RST_BAR BIT(27)
  24
  25 #define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,       \
  26                  _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift,         \
  27                  _div_table, _parent_name)                                     \
  28         {                                                                      \
  29                 .id = _id, .name = _name, .reg = _reg, .pwr_reg = _pwr_reg,    \
  30                 .en_mask = _en_mask, .flags = _flags,                          \
  31                 .rst_bar_mask = CON0_MT7981_RST_BAR, .fmax = MT7981_PLL_FMAX,  \
  32                 .pcwbits = _pcwbits, .pd_reg = _pd_reg, .pd_shift = _pd_shift, \
  33                 .tuner_reg = _tuner_reg, .pcw_reg = _pcw_reg,                  \
  34                 .pcw_shift = _pcw_shift, .div_table = _div_table,              \
  35                 .parent_name = _parent_name,                                   \
  36         }
  37
  38 #define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, _pd_reg,   \
  39             _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift)                       \
  40         PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,       \
  41                  _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, NULL,   \
  42                  "clkxtal")
  43
  44 static const struct mtk_pll_data plls[] = {
  45         PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0x00000001, PLL_AO,
  46             32, 0x0200, 4, 0, 0x0204, 0),
  47         PLL(CLK_APMIXED_NET2PLL, "net2pll", 0x0210, 0x021C, 0x00000001, 0, 32,
  48             0x0210, 4, 0, 0x0214, 0),
  49         PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0220, 0x022C, 0x00000001, 0, 32,
  50             0x0220, 4, 0, 0x0224, 0),
  51         PLL(CLK_APMIXED_SGMPLL, "sgmpll", 0x0230, 0x023C, 0x00000001, 0, 32,
  52             0x0230, 4, 0, 0x0234, 0),
  53         PLL(CLK_APMIXED_WEDMCUPLL, "wedmcupll", 0x0240, 0x024C, 0x00000001, 0, 32,
  54             0x0240, 4, 0, 0x0244, 0),
  55         PLL(CLK_APMIXED_NET1PLL, "net1pll", 0x0250, 0x025C, 0x00000001, 0, 32,
  56             0x0250, 4, 0, 0x0254, 0),
  57         PLL(CLK_APMIXED_MPLL, "mpll", 0x0260, 0x0270, 0x00000001, 0, 32,
  58             0x0260, 4, 0, 0x0264, 0),
  59         PLL(CLK_APMIXED_APLL2, "apll2", 0x0278, 0x0288, 0x00000001, 0, 32,
  60             0x0278, 4, 0, 0x027C, 0),
  61 };
  62
  63 static const struct of_device_id of_match_clk_mt7981_apmixed[] = {
  64         { .compatible = "mediatek,mt7981-apmixedsys", },
  65         { /* sentinel */ }
  66 };
  67 MODULE_DEVICE_TABLE(of, of_match_clk_mt7981_apmixed);
  68
  69 static int clk_mt7981_apmixed_probe(struct platform_device *pdev)
  70 {
  71         struct clk_hw_onecell_data *clk_data;
  72         struct device_node *node = pdev->dev.of_node;
  73         int r;
  74
  75         clk_data = mtk_alloc_clk_data(ARRAY_SIZE(plls));
  76         if (!clk_data)
  77                 return -ENOMEM;
  78
  79         mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
  80
  81         r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
  82         if (r) {
  83                 pr_err("%s(): could not register clock provider: %d\n",
  84                        __func__, r);
  85                 goto free_apmixed_data;
  86         }
  87         return r;
  88
  89 free_apmixed_data:
  90         mtk_free_clk_data(clk_data);
  91         return r;
  92 }
  93
  94 static struct platform_driver clk_mt7981_apmixed_drv = {
  95         .probe = clk_mt7981_apmixed_probe,
  96         .driver = {
  97                 .name = "clk-mt7981-apmixed",
  98                 .of_match_table = of_match_clk_mt7981_apmixed,
  99         },
 100 };
 101 builtin_platform_driver(clk_mt7981_apmixed_drv);
 102
 103 MODULE_DESCRIPTION("MediaTek MT7981 apmixedsys clocks driver");
 104 MODULE_LICENSE("GPL");