1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2017 MediaTek Inc. 4 * Author: Chen Zhong <chen.zhong@mediatek.com> 5 * Sean Wang <sean.wang@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 14 #include "clk-mtk.h" 15 #include "clk-gate.h" 16 17 #include <dt-bindings/clock/mt7622-clk.h> 18 19 #define GATE_ETH(_id, _name, _parent, _shift) \ 20 GATE_MTK(_id, _name, _parent, ð_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv) 21 22 static const struct mtk_gate_regs eth_cg_regs = { 23 .set_ofs = 0x30, 24 .clr_ofs = 0x30, 25 .sta_ofs = 0x30, 26 }; 27 28 static const struct mtk_gate eth_clks[] = { 29 GATE_ETH(CLK_ETH_HSDMA_EN, "eth_hsdma_en", "eth_sel", 5), 30 GATE_ETH(CLK_ETH_ESW_EN, "eth_esw_en", "eth_500m", 6), 31 GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "txclk_src_pre", 7), 32 GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "txclk_src_pre", 8), 33 GATE_ETH(CLK_ETH_GP0_EN, "eth_gp0_en", "txclk_src_pre", 9), 34 }; 35 36 static const struct mtk_gate_regs sgmii_cg_regs = { 37 .set_ofs = 0xE4, 38 .clr_ofs = 0xE4, 39 .sta_ofs = 0xE4, 40 }; 41 42 #define GATE_SGMII(_id, _name, _parent, _shift) \ 43 GATE_MTK(_id, _name, _parent, &sgmii_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv) 44 45 static const struct mtk_gate sgmii_clks[] = { 46 GATE_SGMII(CLK_SGMII_TX250M_EN, "sgmii_tx250m_en", 47 "ssusb_tx250m", 2), 48 GATE_SGMII(CLK_SGMII_RX250M_EN, "sgmii_rx250m_en", 49 "ssusb_eq_rx250m", 3), 50 GATE_SGMII(CLK_SGMII_CDR_REF, "sgmii_cdr_ref", 51 "ssusb_cdr_ref", 4), 52 GATE_SGMII(CLK_SGMII_CDR_FB, "sgmii_cdr_fb", 53 "ssusb_cdr_fb", 5), 54 }; 55 56 static u16 rst_ofs[] = { 0x34, }; 57 58 static const struct mtk_clk_rst_desc clk_rst_desc = { 59 .version = MTK_RST_SIMPLE, 60 .rst_bank_ofs = rst_ofs, 61 .rst_bank_nr = ARRAY_SIZE(rst_ofs), 62 }; 63 64 static const struct mtk_clk_desc eth_desc = { 65 .clks = eth_clks, 66 .num_clks = ARRAY_SIZE(eth_clks), 67 .rst_desc = &clk_rst_desc, 68 }; 69 70 static const struct mtk_clk_desc sgmii_desc = { 71 .clks = sgmii_clks, 72 .num_clks = ARRAY_SIZE(sgmii_clks), 73 }; 74 75 static const struct of_device_id of_match_clk_mt7622_eth[] = { 76 { .compatible = "mediatek,mt7622-ethsys", .data = ð_desc }, 77 { .compatible = "mediatek,mt7622-sgmiisys", .data = &sgmii_desc }, 78 { /* sentinel */ } 79 }; 80 MODULE_DEVICE_TABLE(of, of_match_clk_mt7622_eth); 81 82 static struct platform_driver clk_mt7622_eth_drv = { 83 .probe = mtk_clk_simple_probe, 84 .remove = mtk_clk_simple_remove, 85 .driver = { 86 .name = "clk-mt7622-eth", 87 .of_match_table = of_match_clk_mt7622_eth, 88 }, 89 }; 90 module_platform_driver(clk_mt7622_eth_drv); 91 MODULE_LICENSE("GPL"); 92