drivers/clk/mediatek/clk-mt7986-eth.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/mod_devicetable.h>
  10 #include <linux/platform_device.h>
  11
  12 #include "clk-mtk.h"
  13 #include "clk-gate.h"
  14
  15 #include <dt-bindings/clock/mt7986-clk.h>
  16
  17 static const struct mtk_gate_regs sgmii0_cg_regs = {
  18         .set_ofs = 0xe4,
  19         .clr_ofs = 0xe4,
  20         .sta_ofs = 0xe4,
  21 };
  22
  23 #define GATE_SGMII0(_id, _name, _parent, _shift)                \
  24         GATE_MTK(_id, _name, _parent, &sgmii0_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
  25
  26 static const struct mtk_gate sgmii0_clks[] = {
  27         GATE_SGMII0(CLK_SGMII0_TX250M_EN, "sgmii0_tx250m_en", "top_xtal", 2),
  28         GATE_SGMII0(CLK_SGMII0_RX250M_EN, "sgmii0_rx250m_en", "top_xtal", 3),
  29         GATE_SGMII0(CLK_SGMII0_CDR_REF, "sgmii0_cdr_ref", "top_xtal", 4),
  30         GATE_SGMII0(CLK_SGMII0_CDR_FB, "sgmii0_cdr_fb", "top_xtal", 5),
  31 };
  32
  33 static const struct mtk_gate_regs sgmii1_cg_regs = {
  34         .set_ofs = 0xe4,
  35         .clr_ofs = 0xe4,
  36         .sta_ofs = 0xe4,
  37 };
  38
  39 #define GATE_SGMII1(_id, _name, _parent, _shift)                \
  40         GATE_MTK(_id, _name, _parent, &sgmii1_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
  41
  42 static const struct mtk_gate sgmii1_clks[] = {
  43         GATE_SGMII1(CLK_SGMII1_TX250M_EN, "sgmii1_tx250m_en", "top_xtal", 2),
  44         GATE_SGMII1(CLK_SGMII1_RX250M_EN, "sgmii1_rx250m_en", "top_xtal", 3),
  45         GATE_SGMII1(CLK_SGMII1_CDR_REF, "sgmii1_cdr_ref", "top_xtal", 4),
  46         GATE_SGMII1(CLK_SGMII1_CDR_FB, "sgmii1_cdr_fb", "top_xtal", 5),
  47 };
  48
  49 static const struct mtk_gate_regs eth_cg_regs = {
  50         .set_ofs = 0x30,
  51         .clr_ofs = 0x30,
  52         .sta_ofs = 0x30,
  53 };
  54
  55 #define GATE_ETH(_id, _name, _parent, _shift)                   \
  56         GATE_MTK(_id, _name, _parent, &eth_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
  57
  58 static const struct mtk_gate eth_clks[] = {
  59         GATE_ETH(CLK_ETH_FE_EN, "eth_fe_en", "netsys_2x_sel", 6),
  60         GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "sgm_325m_sel", 7),
  61         GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "sgm_325m_sel", 8),
  62         GATE_ETH(CLK_ETH_WOCPU1_EN, "eth_wocpu1_en", "netsys_mcu_sel", 14),
  63         GATE_ETH(CLK_ETH_WOCPU0_EN, "eth_wocpu0_en", "netsys_mcu_sel", 15),
  64 };
  65
  66 static const struct mtk_clk_desc eth_desc = {
  67         .clks = eth_clks,
  68         .num_clks = ARRAY_SIZE(eth_clks),
  69 };
  70
  71 static const struct mtk_clk_desc sgmii0_desc = {
  72         .clks = sgmii0_clks,
  73         .num_clks = ARRAY_SIZE(sgmii0_clks),
  74 };
  75
  76 static const struct mtk_clk_desc sgmii1_desc = {
  77         .clks = sgmii1_clks,
  78         .num_clks = ARRAY_SIZE(sgmii1_clks),
  79 };
  80
  81 static const struct of_device_id of_match_clk_mt7986_eth[] = {
  82         { .compatible = "mediatek,mt7986-ethsys", .data = &eth_desc },
  83         { .compatible = "mediatek,mt7986-sgmiisys_0", .data = &sgmii0_desc },
  84         { .compatible = "mediatek,mt7986-sgmiisys_1", .data = &sgmii1_desc },
  85         { /* sentinel */ }
  86 };
  87 MODULE_DEVICE_TABLE(of, of_match_clk_mt7986_eth);
  88
  89 static struct platform_driver clk_mt7986_eth_drv = {
  90         .driver = {
  91                 .name = "clk-mt7986-eth",
  92                 .of_match_table = of_match_clk_mt7986_eth,
  93         },
  94         .probe = mtk_clk_simple_probe,
  95         .remove = mtk_clk_simple_remove,
  96 };
  97 module_platform_driver(clk_mt7986_eth_drv);
  98
  99 MODULE_DESCRIPTION("MediaTek MT7986 Ethernet clocks driver");
 100 MODULE_LICENSE("GPL");