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_PCIE(_id, _name, _parent, _shift)				\
20 	GATE_MTK(_id, _name, _parent, &pcie_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
21 
22 #define GATE_SSUSB(_id, _name, _parent, _shift)				\
23 	GATE_MTK(_id, _name, _parent, &ssusb_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
24 
25 static const struct mtk_gate_regs pcie_cg_regs = {
26 	.set_ofs = 0x30,
27 	.clr_ofs = 0x30,
28 	.sta_ofs = 0x30,
29 };
30 
31 static const struct mtk_gate_regs ssusb_cg_regs = {
32 	.set_ofs = 0x30,
33 	.clr_ofs = 0x30,
34 	.sta_ofs = 0x30,
35 };
36 
37 static const struct mtk_gate ssusb_clks[] = {
38 	GATE_SSUSB(CLK_SSUSB_U2_PHY_1P_EN, "ssusb_u2_phy_1p",
39 		   "to_u2_phy_1p", 0),
40 	GATE_SSUSB(CLK_SSUSB_U2_PHY_EN, "ssusb_u2_phy_en", "to_u2_phy", 1),
41 	GATE_SSUSB(CLK_SSUSB_REF_EN, "ssusb_ref_en", "to_usb3_ref", 5),
42 	GATE_SSUSB(CLK_SSUSB_SYS_EN, "ssusb_sys_en", "to_usb3_sys", 6),
43 	GATE_SSUSB(CLK_SSUSB_MCU_EN, "ssusb_mcu_en", "axi_sel", 7),
44 	GATE_SSUSB(CLK_SSUSB_DMA_EN, "ssusb_dma_en", "hif_sel", 8),
45 };
46 
47 static const struct mtk_gate pcie_clks[] = {
48 	GATE_PCIE(CLK_PCIE_P1_AUX_EN, "pcie_p1_aux_en", "p1_1mhz", 12),
49 	GATE_PCIE(CLK_PCIE_P1_OBFF_EN, "pcie_p1_obff_en", "free_run_4mhz", 13),
50 	GATE_PCIE(CLK_PCIE_P1_AHB_EN, "pcie_p1_ahb_en", "axi_sel", 14),
51 	GATE_PCIE(CLK_PCIE_P1_AXI_EN, "pcie_p1_axi_en", "hif_sel", 15),
52 	GATE_PCIE(CLK_PCIE_P1_MAC_EN, "pcie_p1_mac_en", "pcie1_mac_en", 16),
53 	GATE_PCIE(CLK_PCIE_P1_PIPE_EN, "pcie_p1_pipe_en", "pcie1_pipe_en", 17),
54 	GATE_PCIE(CLK_PCIE_P0_AUX_EN, "pcie_p0_aux_en", "p0_1mhz", 18),
55 	GATE_PCIE(CLK_PCIE_P0_OBFF_EN, "pcie_p0_obff_en", "free_run_4mhz", 19),
56 	GATE_PCIE(CLK_PCIE_P0_AHB_EN, "pcie_p0_ahb_en", "axi_sel", 20),
57 	GATE_PCIE(CLK_PCIE_P0_AXI_EN, "pcie_p0_axi_en", "hif_sel", 21),
58 	GATE_PCIE(CLK_PCIE_P0_MAC_EN, "pcie_p0_mac_en", "pcie0_mac_en", 22),
59 	GATE_PCIE(CLK_PCIE_P0_PIPE_EN, "pcie_p0_pipe_en", "pcie0_pipe_en", 23),
60 	GATE_PCIE(CLK_SATA_AHB_EN, "sata_ahb_en", "axi_sel", 26),
61 	GATE_PCIE(CLK_SATA_AXI_EN, "sata_axi_en", "hif_sel", 27),
62 	GATE_PCIE(CLK_SATA_ASIC_EN, "sata_asic_en", "sata_asic", 28),
63 	GATE_PCIE(CLK_SATA_RBC_EN, "sata_rbc_en", "sata_rbc", 29),
64 	GATE_PCIE(CLK_SATA_PM_EN, "sata_pm_en", "univpll2_d4", 30),
65 };
66 
67 static u16 rst_ofs[] = { 0x34, };
68 
69 static const struct mtk_clk_rst_desc clk_rst_desc = {
70 	.version = MTK_RST_SIMPLE,
71 	.rst_bank_ofs = rst_ofs,
72 	.rst_bank_nr = ARRAY_SIZE(rst_ofs),
73 };
74 
75 static const struct mtk_clk_desc ssusb_desc = {
76 	.clks = ssusb_clks,
77 	.num_clks = ARRAY_SIZE(ssusb_clks),
78 	.rst_desc = &clk_rst_desc,
79 };
80 
81 static const struct mtk_clk_desc pcie_desc = {
82 	.clks = pcie_clks,
83 	.num_clks = ARRAY_SIZE(pcie_clks),
84 	.rst_desc = &clk_rst_desc,
85 };
86 
87 static const struct of_device_id of_match_clk_mt7622_hif[] = {
88 	{ .compatible = "mediatek,mt7622-pciesys", .data = &pcie_desc },
89 	{ .compatible = "mediatek,mt7622-ssusbsys", .data = &ssusb_desc },
90 	{ /* sentinel */ }
91 };
92 MODULE_DEVICE_TABLE(of, of_match_clk_mt7622_hif);
93 
94 static struct platform_driver clk_mt7622_hif_drv = {
95 	.probe = mtk_clk_simple_probe,
96 	.remove_new = mtk_clk_simple_remove,
97 	.driver = {
98 		.name = "clk-mt7622-hif",
99 		.of_match_table = of_match_clk_mt7622_hif,
100 	},
101 };
102 module_platform_driver(clk_mt7622_hif_drv);
103 MODULE_LICENSE("GPL");
104