1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2018 MediaTek Inc. 4 * Author: Wenzhen Yu <Wenzhen Yu@mediatek.com> 5 * Ryder Lee <ryder.lee@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/mt7629-clk.h> 18 19 #define GATE_PCIE(_id, _name, _parent, _shift) { \ 20 .id = _id, \ 21 .name = _name, \ 22 .parent_name = _parent, \ 23 .regs = &pcie_cg_regs, \ 24 .shift = _shift, \ 25 .ops = &mtk_clk_gate_ops_no_setclr_inv, \ 26 } 27 28 #define GATE_SSUSB(_id, _name, _parent, _shift) { \ 29 .id = _id, \ 30 .name = _name, \ 31 .parent_name = _parent, \ 32 .regs = &ssusb_cg_regs, \ 33 .shift = _shift, \ 34 .ops = &mtk_clk_gate_ops_no_setclr_inv, \ 35 } 36 37 static const struct mtk_gate_regs pcie_cg_regs = { 38 .set_ofs = 0x30, 39 .clr_ofs = 0x30, 40 .sta_ofs = 0x30, 41 }; 42 43 static const struct mtk_gate_regs ssusb_cg_regs = { 44 .set_ofs = 0x30, 45 .clr_ofs = 0x30, 46 .sta_ofs = 0x30, 47 }; 48 49 static const struct mtk_gate ssusb_clks[] = { 50 GATE_SSUSB(CLK_SSUSB_U2_PHY_1P_EN, "ssusb_u2_phy_1p", 51 "to_u2_phy_1p", 0), 52 GATE_SSUSB(CLK_SSUSB_U2_PHY_EN, "ssusb_u2_phy_en", "to_u2_phy", 1), 53 GATE_SSUSB(CLK_SSUSB_REF_EN, "ssusb_ref_en", "to_usb3_ref", 5), 54 GATE_SSUSB(CLK_SSUSB_SYS_EN, "ssusb_sys_en", "to_usb3_sys", 6), 55 GATE_SSUSB(CLK_SSUSB_MCU_EN, "ssusb_mcu_en", "to_usb3_mcu", 7), 56 GATE_SSUSB(CLK_SSUSB_DMA_EN, "ssusb_dma_en", "to_usb3_dma", 8), 57 }; 58 59 static const struct mtk_gate pcie_clks[] = { 60 GATE_PCIE(CLK_PCIE_P1_AUX_EN, "pcie_p1_aux_en", "p1_1mhz", 12), 61 GATE_PCIE(CLK_PCIE_P1_OBFF_EN, "pcie_p1_obff_en", "free_run_4mhz", 13), 62 GATE_PCIE(CLK_PCIE_P1_AHB_EN, "pcie_p1_ahb_en", "from_top_ahb", 14), 63 GATE_PCIE(CLK_PCIE_P1_AXI_EN, "pcie_p1_axi_en", "from_top_axi", 15), 64 GATE_PCIE(CLK_PCIE_P1_MAC_EN, "pcie_p1_mac_en", "pcie1_mac_en", 16), 65 GATE_PCIE(CLK_PCIE_P1_PIPE_EN, "pcie_p1_pipe_en", "pcie1_pipe_en", 17), 66 GATE_PCIE(CLK_PCIE_P0_AUX_EN, "pcie_p0_aux_en", "p0_1mhz", 18), 67 GATE_PCIE(CLK_PCIE_P0_OBFF_EN, "pcie_p0_obff_en", "free_run_4mhz", 19), 68 GATE_PCIE(CLK_PCIE_P0_AHB_EN, "pcie_p0_ahb_en", "from_top_ahb", 20), 69 GATE_PCIE(CLK_PCIE_P0_AXI_EN, "pcie_p0_axi_en", "from_top_axi", 21), 70 GATE_PCIE(CLK_PCIE_P0_MAC_EN, "pcie_p0_mac_en", "pcie0_mac_en", 22), 71 GATE_PCIE(CLK_PCIE_P0_PIPE_EN, "pcie_p0_pipe_en", "pcie0_pipe_en", 23), 72 }; 73 74 static u16 rst_ofs[] = { 0x34, }; 75 76 static const struct mtk_clk_rst_desc clk_rst_desc = { 77 .version = MTK_RST_SIMPLE, 78 .rst_bank_ofs = rst_ofs, 79 .rst_bank_nr = ARRAY_SIZE(rst_ofs), 80 }; 81 82 static int clk_mt7629_ssusbsys_init(struct platform_device *pdev) 83 { 84 struct clk_hw_onecell_data *clk_data; 85 struct device_node *node = pdev->dev.of_node; 86 int r; 87 88 clk_data = mtk_alloc_clk_data(CLK_SSUSB_NR_CLK); 89 90 mtk_clk_register_gates(node, ssusb_clks, ARRAY_SIZE(ssusb_clks), 91 clk_data); 92 93 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); 94 if (r) 95 dev_err(&pdev->dev, 96 "could not register clock provider: %s: %d\n", 97 pdev->name, r); 98 99 mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc); 100 101 return r; 102 } 103 104 static int clk_mt7629_pciesys_init(struct platform_device *pdev) 105 { 106 struct clk_hw_onecell_data *clk_data; 107 struct device_node *node = pdev->dev.of_node; 108 int r; 109 110 clk_data = mtk_alloc_clk_data(CLK_PCIE_NR_CLK); 111 112 mtk_clk_register_gates(node, pcie_clks, ARRAY_SIZE(pcie_clks), 113 clk_data); 114 115 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); 116 if (r) 117 dev_err(&pdev->dev, 118 "could not register clock provider: %s: %d\n", 119 pdev->name, r); 120 121 mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc); 122 123 return r; 124 } 125 126 static const struct of_device_id of_match_clk_mt7629_hif[] = { 127 { 128 .compatible = "mediatek,mt7629-pciesys", 129 .data = clk_mt7629_pciesys_init, 130 }, { 131 .compatible = "mediatek,mt7629-ssusbsys", 132 .data = clk_mt7629_ssusbsys_init, 133 }, { 134 /* sentinel */ 135 } 136 }; 137 138 static int clk_mt7629_hif_probe(struct platform_device *pdev) 139 { 140 int (*clk_init)(struct platform_device *); 141 int r; 142 143 clk_init = of_device_get_match_data(&pdev->dev); 144 if (!clk_init) 145 return -EINVAL; 146 147 r = clk_init(pdev); 148 if (r) 149 dev_err(&pdev->dev, 150 "could not register clock provider: %s: %d\n", 151 pdev->name, r); 152 153 return r; 154 } 155 156 static struct platform_driver clk_mt7629_hif_drv = { 157 .probe = clk_mt7629_hif_probe, 158 .driver = { 159 .name = "clk-mt7629-hif", 160 .of_match_table = of_match_clk_mt7629_hif, 161 }, 162 }; 163 164 builtin_platform_driver(clk_mt7629_hif_drv); 165