drivers/clk/mediatek/clk-mt7988-eth.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2023 MediaTek Inc.
   4  * Author: Sam Shih <sam.shih@mediatek.com>
   5  * Author: Xiufeng Li <Xiufeng.Li@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 "reset.h"
  16 #include <dt-bindings/clock/mediatek,mt7988-clk.h>
  17 #include <dt-bindings/reset/mediatek,mt7988-resets.h>
  18
  19 static const struct mtk_gate_regs ethdma_cg_regs = {
  20         .set_ofs = 0x30,
  21         .clr_ofs = 0x30,
  22         .sta_ofs = 0x30,
  23 };
  24
  25 #define GATE_ETHDMA(_id, _name, _parent, _shift)                \
  26         {                                                       \
  27                 .id = _id,                                      \
  28                 .name = _name,                                  \
  29                 .parent_name = _parent,                         \
  30                 .regs = &ethdma_cg_regs,                        \
  31                 .shift = _shift,                                \
  32                 .ops = &mtk_clk_gate_ops_no_setclr_inv,         \
  33         }
  34
  35 static const struct mtk_gate ethdma_clks[] = {
  36         GATE_ETHDMA(CLK_ETHDMA_XGP1_EN, "ethdma_xgp1_en", "top_xtal", 0),
  37         GATE_ETHDMA(CLK_ETHDMA_XGP2_EN, "ethdma_xgp2_en", "top_xtal", 1),
  38         GATE_ETHDMA(CLK_ETHDMA_XGP3_EN, "ethdma_xgp3_en", "top_xtal", 2),
  39         GATE_ETHDMA(CLK_ETHDMA_FE_EN, "ethdma_fe_en", "netsys_2x_sel", 6),
  40         GATE_ETHDMA(CLK_ETHDMA_GP2_EN, "ethdma_gp2_en", "top_xtal", 7),
  41         GATE_ETHDMA(CLK_ETHDMA_GP1_EN, "ethdma_gp1_en", "top_xtal", 8),
  42         GATE_ETHDMA(CLK_ETHDMA_GP3_EN, "ethdma_gp3_en", "top_xtal", 10),
  43         GATE_ETHDMA(CLK_ETHDMA_ESW_EN, "ethdma_esw_en", "netsys_gsw_sel", 16),
  44         GATE_ETHDMA(CLK_ETHDMA_CRYPT0_EN, "ethdma_crypt0_en", "eip197_sel", 29),
  45 };
  46
  47 static const struct mtk_clk_desc ethdma_desc = {
  48         .clks = ethdma_clks,
  49         .num_clks = ARRAY_SIZE(ethdma_clks),
  50 };
  51
  52 static const struct mtk_gate_regs sgmii_cg_regs = {
  53         .set_ofs = 0xe4,
  54         .clr_ofs = 0xe4,
  55         .sta_ofs = 0xe4,
  56 };
  57
  58 #define GATE_SGMII(_id, _name, _parent, _shift)                 \
  59         {                                                       \
  60                 .id = _id,                                      \
  61                 .name = _name,                                  \
  62                 .parent_name = _parent,                         \
  63                 .regs = &sgmii_cg_regs,                         \
  64                 .shift = _shift,                                \
  65                 .ops = &mtk_clk_gate_ops_no_setclr_inv,         \
  66         }
  67
  68 static const struct mtk_gate sgmii0_clks[] = {
  69         GATE_SGMII(CLK_SGM0_TX_EN, "sgm0_tx_en", "top_xtal", 2),
  70         GATE_SGMII(CLK_SGM0_RX_EN, "sgm0_rx_en", "top_xtal", 3),
  71 };
  72
  73 static const struct mtk_clk_desc sgmii0_desc = {
  74         .clks = sgmii0_clks,
  75         .num_clks = ARRAY_SIZE(sgmii0_clks),
  76 };
  77
  78 static const struct mtk_gate sgmii1_clks[] = {
  79         GATE_SGMII(CLK_SGM1_TX_EN, "sgm1_tx_en", "top_xtal", 2),
  80         GATE_SGMII(CLK_SGM1_RX_EN, "sgm1_rx_en", "top_xtal", 3),
  81 };
  82
  83 static const struct mtk_clk_desc sgmii1_desc = {
  84         .clks = sgmii1_clks,
  85         .num_clks = ARRAY_SIZE(sgmii1_clks),
  86 };
  87
  88 static const struct mtk_gate_regs ethwarp_cg_regs = {
  89         .set_ofs = 0x14,
  90         .clr_ofs = 0x14,
  91         .sta_ofs = 0x14,
  92 };
  93
  94 #define GATE_ETHWARP(_id, _name, _parent, _shift)               \
  95         {                                                       \
  96                 .id = _id,                                      \
  97                 .name = _name,                                  \
  98                 .parent_name = _parent,                         \
  99                 .regs = &ethwarp_cg_regs,                       \
 100                 .shift = _shift,                                \
 101                 .ops = &mtk_clk_gate_ops_no_setclr_inv,         \
 102         }
 103
 104 static const struct mtk_gate ethwarp_clks[] = {
 105         GATE_ETHWARP(CLK_ETHWARP_WOCPU2_EN, "ethwarp_wocpu2_en", "netsys_mcu_sel", 13),
 106         GATE_ETHWARP(CLK_ETHWARP_WOCPU1_EN, "ethwarp_wocpu1_en", "netsys_mcu_sel", 14),
 107         GATE_ETHWARP(CLK_ETHWARP_WOCPU0_EN, "ethwarp_wocpu0_en", "netsys_mcu_sel", 15),
 108 };
 109
 110 static u16 ethwarp_rst_ofs[] = { 0x8 };
 111
 112 static u16 ethwarp_idx_map[] = {
 113         [MT7988_ETHWARP_RST_SWITCH] = 9,
 114 };
 115
 116 static const struct mtk_clk_rst_desc ethwarp_rst_desc = {
 117         .version = MTK_RST_SIMPLE,
 118         .rst_bank_ofs = ethwarp_rst_ofs,
 119         .rst_bank_nr = ARRAY_SIZE(ethwarp_rst_ofs),
 120         .rst_idx_map = ethwarp_idx_map,
 121         .rst_idx_map_nr = ARRAY_SIZE(ethwarp_idx_map),
 122 };
 123
 124 static const struct mtk_clk_desc ethwarp_desc = {
 125         .clks = ethwarp_clks,
 126         .num_clks = ARRAY_SIZE(ethwarp_clks),
 127         .rst_desc = &ethwarp_rst_desc,
 128 };
 129
 130 static const struct of_device_id of_match_clk_mt7988_eth[] = {
 131         { .compatible = "mediatek,mt7988-ethsys", .data = &ethdma_desc },
 132         { .compatible = "mediatek,mt7988-sgmiisys0", .data = &sgmii0_desc },
 133         { .compatible = "mediatek,mt7988-sgmiisys1", .data = &sgmii1_desc },
 134         { .compatible = "mediatek,mt7988-ethwarp", .data = &ethwarp_desc },
 135         { /* sentinel */ }
 136 };
 137 MODULE_DEVICE_TABLE(of, of_match_clk_mt7988_eth);
 138
 139 static struct platform_driver clk_mt7988_eth_drv = {
 140         .driver = {
 141                 .name = "clk-mt7988-eth",
 142                 .of_match_table = of_match_clk_mt7988_eth,
 143         },
 144         .probe = mtk_clk_simple_probe,
 145         .remove = mtk_clk_simple_remove,
 146 };
 147 module_platform_driver(clk_mt7988_eth_drv);
 148
 149 MODULE_DESCRIPTION("MediaTek MT7988 Ethernet clocks driver");
 150 MODULE_LICENSE("GPL");