drivers/clk/mediatek/clk-mt7986-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  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/of.h>
  10 #include <linux/of_address.h>
  11 #include <linux/of_device.h>
  12 #include <linux/platform_device.h>
  13 #include "clk-mtk.h"
  14 #include "clk-gate.h"
  15 #include "clk-mux.h"
  16
  17 #include <dt-bindings/clock/mt7986-clk.h>
  18 #include <linux/clk.h>
  19
  20 #define MT7986_PLL_FMAX (2500UL * MHZ)
  21 #define CON0_MT7986_RST_BAR BIT(27)
  22
  23 #define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,       \
  24                  _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift,         \
  25                  _div_table, _parent_name)                                     \
  26         {                                                                      \
  27                 .id = _id, .name = _name, .reg = _reg, .pwr_reg = _pwr_reg,    \
  28                 .en_mask = _en_mask, .flags = _flags,                          \
  29                 .rst_bar_mask = CON0_MT7986_RST_BAR, .fmax = MT7986_PLL_FMAX,  \
  30                 .pcwbits = _pcwbits, .pd_reg = _pd_reg, .pd_shift = _pd_shift, \
  31                 .tuner_reg = _tuner_reg, .pcw_reg = _pcw_reg,                  \
  32                 .pcw_shift = _pcw_shift, .div_table = _div_table,              \
  33                 .parent_name = _parent_name,                                   \
  34         }
  35
  36 #define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, _pd_reg,   \
  37             _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift)                       \
  38         PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits,       \
  39                  _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, NULL,   \
  40                  "clkxtal")
  41
  42 static const struct mtk_pll_data plls[] = {
  43         PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0x00000001, 0, 32,
  44             0x0200, 4, 0, 0x0204, 0),
  45         PLL(CLK_APMIXED_NET2PLL, "net2pll", 0x0210, 0x021C, 0x00000001, 0, 32,
  46             0x0210, 4, 0, 0x0214, 0),
  47         PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0220, 0x022C, 0x00000001, 0, 32,
  48             0x0220, 4, 0, 0x0224, 0),
  49         PLL(CLK_APMIXED_SGMPLL, "sgmpll", 0x0230, 0x023c, 0x00000001, 0, 32,
  50             0x0230, 4, 0, 0x0234, 0),
  51         PLL(CLK_APMIXED_WEDMCUPLL, "wedmcupll", 0x0240, 0x024c, 0x00000001, 0,
  52             32, 0x0240, 4, 0, 0x0244, 0),
  53         PLL(CLK_APMIXED_NET1PLL, "net1pll", 0x0250, 0x025c, 0x00000001, 0, 32,
  54             0x0250, 4, 0, 0x0254, 0),
  55         PLL(CLK_APMIXED_MPLL, "mpll", 0x0260, 0x0270, 0x00000001, 0, 32, 0x0260,
  56             4, 0, 0x0264, 0),
  57         PLL(CLK_APMIXED_APLL2, "apll2", 0x0278, 0x0288, 0x00000001, 0, 32,
  58             0x0278, 4, 0, 0x027c, 0),
  59 };
  60
  61 static const struct of_device_id of_match_clk_mt7986_apmixed[] = {
  62         { .compatible = "mediatek,mt7986-apmixedsys", },
  63         {}
  64 };
  65
  66 static int clk_mt7986_apmixed_probe(struct platform_device *pdev)
  67 {
  68         struct clk_onecell_data *clk_data;
  69         struct device_node *node = pdev->dev.of_node;
  70         int r;
  71
  72         clk_data = mtk_alloc_clk_data(ARRAY_SIZE(plls));
  73         if (!clk_data)
  74                 return -ENOMEM;
  75
  76         mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
  77
  78         clk_prepare_enable(clk_data->clks[CLK_APMIXED_ARMPLL]);
  79
  80         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  81         if (r) {
  82                 pr_err("%s(): could not register clock provider: %d\n",
  83                        __func__, r);
  84                 goto free_apmixed_data;
  85         }
  86         return r;
  87
  88 free_apmixed_data:
  89         mtk_free_clk_data(clk_data);
  90         return r;
  91 }
  92
  93 static struct platform_driver clk_mt7986_apmixed_drv = {
  94         .probe = clk_mt7986_apmixed_probe,
  95         .driver = {
  96                 .name = "clk-mt7986-apmixed",
  97                 .of_match_table = of_match_clk_mt7986_apmixed,
  98         },
  99 };
 100 builtin_platform_driver(clk_mt7986_apmixed_drv);