| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2018 MediaTek Inc. |
| * Author: Wenzhen Yu <Wenzhen Yu@mediatek.com> |
| * Ryder Lee <ryder.lee@mediatek.com> |
| */ |
| |
| #include <linux/clk-provider.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| |
| #include "clk-mtk.h" |
| #include "clk-gate.h" |
| |
| #include <dt-bindings/clock/mt7629-clk.h> |
| |
| #define GATE_ETH(_id, _name, _parent, _shift) \ |
| GATE_MTK(_id, _name, _parent, ð_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv) |
| |
| static const struct mtk_gate_regs eth_cg_regs = { |
| .set_ofs = 0x30, |
| .clr_ofs = 0x30, |
| .sta_ofs = 0x30, |
| }; |
| |
| static const struct mtk_gate eth_clks[] = { |
| GATE_ETH(CLK_ETH_FE_EN, "eth_fe_en", "eth2pll", 6), |
| GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "txclk_src_pre", 7), |
| GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "txclk_src_pre", 8), |
| GATE_ETH(CLK_ETH_GP0_EN, "eth_gp0_en", "txclk_src_pre", 9), |
| GATE_ETH(CLK_ETH_ESW_EN, "eth_esw_en", "eth_500m", 16), |
| }; |
| |
| static const struct mtk_gate_regs sgmii_cg_regs = { |
| .set_ofs = 0xE4, |
| .clr_ofs = 0xE4, |
| .sta_ofs = 0xE4, |
| }; |
| |
| #define GATE_SGMII(_id, _name, _parent, _shift) \ |
| GATE_MTK(_id, _name, _parent, &sgmii_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv) |
| |
| static const struct mtk_gate sgmii_clks[2][4] = { |
| { |
| GATE_SGMII(CLK_SGMII_TX_EN, "sgmii_tx_en", |
| "ssusb_tx250m", 2), |
| GATE_SGMII(CLK_SGMII_RX_EN, "sgmii_rx_en", |
| "ssusb_eq_rx250m", 3), |
| GATE_SGMII(CLK_SGMII_CDR_REF, "sgmii_cdr_ref", |
| "ssusb_cdr_ref", 4), |
| GATE_SGMII(CLK_SGMII_CDR_FB, "sgmii_cdr_fb", |
| "ssusb_cdr_fb", 5), |
| }, { |
| GATE_SGMII(CLK_SGMII_TX_EN, "sgmii_tx_en1", |
| "ssusb_tx250m", 2), |
| GATE_SGMII(CLK_SGMII_RX_EN, "sgmii_rx_en1", |
| "ssusb_eq_rx250m", 3), |
| GATE_SGMII(CLK_SGMII_CDR_REF, "sgmii_cdr_ref1", |
| "ssusb_cdr_ref", 4), |
| GATE_SGMII(CLK_SGMII_CDR_FB, "sgmii_cdr_fb1", |
| "ssusb_cdr_fb", 5), |
| } |
| }; |
| |
| static u16 rst_ofs[] = { 0x34, }; |
| |
| static const struct mtk_clk_rst_desc clk_rst_desc = { |
| .version = MTK_RST_SIMPLE, |
| .rst_bank_ofs = rst_ofs, |
| .rst_bank_nr = ARRAY_SIZE(rst_ofs), |
| }; |
| |
| static int clk_mt7629_ethsys_init(struct platform_device *pdev) |
| { |
| struct clk_hw_onecell_data *clk_data; |
| struct device_node *node = pdev->dev.of_node; |
| int r; |
| |
| clk_data = mtk_alloc_clk_data(CLK_ETH_NR_CLK); |
| |
| mtk_clk_register_gates(&pdev->dev, node, eth_clks, |
| CLK_ETH_NR_CLK, clk_data); |
| |
| r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); |
| if (r) |
| dev_err(&pdev->dev, |
| "could not register clock provider: %s: %d\n", |
| pdev->name, r); |
| |
| mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc); |
| |
| return r; |
| } |
| |
| static int clk_mt7629_sgmiisys_init(struct platform_device *pdev) |
| { |
| struct clk_hw_onecell_data *clk_data; |
| struct device_node *node = pdev->dev.of_node; |
| static int id; |
| int r; |
| |
| clk_data = mtk_alloc_clk_data(CLK_SGMII_NR_CLK); |
| |
| mtk_clk_register_gates(&pdev->dev, node, sgmii_clks[id++], |
| CLK_SGMII_NR_CLK, clk_data); |
| |
| r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); |
| if (r) |
| dev_err(&pdev->dev, |
| "could not register clock provider: %s: %d\n", |
| pdev->name, r); |
| |
| return r; |
| } |
| |
| static const struct of_device_id of_match_clk_mt7629_eth[] = { |
| { |
| .compatible = "mediatek,mt7629-ethsys", |
| .data = clk_mt7629_ethsys_init, |
| }, { |
| .compatible = "mediatek,mt7629-sgmiisys", |
| .data = clk_mt7629_sgmiisys_init, |
| }, { |
| /* sentinel */ |
| } |
| }; |
| MODULE_DEVICE_TABLE(of, of_match_clk_mt7629_eth); |
| |
| static int clk_mt7629_eth_probe(struct platform_device *pdev) |
| { |
| int (*clk_init)(struct platform_device *); |
| int r; |
| |
| clk_init = of_device_get_match_data(&pdev->dev); |
| if (!clk_init) |
| return -EINVAL; |
| |
| r = clk_init(pdev); |
| if (r) |
| dev_err(&pdev->dev, |
| "could not register clock provider: %s: %d\n", |
| pdev->name, r); |
| |
| return r; |
| } |
| |
| static struct platform_driver clk_mt7629_eth_drv = { |
| .probe = clk_mt7629_eth_probe, |
| .driver = { |
| .name = "clk-mt7629-eth", |
| .of_match_table = of_match_clk_mt7629_eth, |
| }, |
| }; |
| |
| builtin_platform_driver(clk_mt7629_eth_drv); |
| MODULE_LICENSE("GPL"); |