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https://github.com/edk2-porting/linux-next.git
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160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018 MediaTek Inc.
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* Author: Wenzhen Yu <Wenzhen Yu@mediatek.com>
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* Ryder Lee <ryder.lee@mediatek.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include "clk-mtk.h"
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#include "clk-gate.h"
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#include <dt-bindings/clock/mt7629-clk.h>
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#define GATE_ETH(_id, _name, _parent, _shift) { \
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.id = _id, \
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.name = _name, \
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.parent_name = _parent, \
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.regs = ð_cg_regs, \
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.shift = _shift, \
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.ops = &mtk_clk_gate_ops_no_setclr_inv, \
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}
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static const struct mtk_gate_regs eth_cg_regs = {
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.set_ofs = 0x30,
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.clr_ofs = 0x30,
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.sta_ofs = 0x30,
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};
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static const struct mtk_gate eth_clks[] = {
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GATE_ETH(CLK_ETH_FE_EN, "eth_fe_en", "eth2pll", 6),
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GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "txclk_src_pre", 7),
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GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "txclk_src_pre", 8),
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GATE_ETH(CLK_ETH_GP0_EN, "eth_gp0_en", "txclk_src_pre", 9),
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GATE_ETH(CLK_ETH_ESW_EN, "eth_esw_en", "eth_500m", 16),
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};
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static const struct mtk_gate_regs sgmii_cg_regs = {
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.set_ofs = 0xE4,
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.clr_ofs = 0xE4,
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.sta_ofs = 0xE4,
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};
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#define GATE_SGMII(_id, _name, _parent, _shift) { \
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.id = _id, \
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.name = _name, \
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.parent_name = _parent, \
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.regs = &sgmii_cg_regs, \
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.shift = _shift, \
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.ops = &mtk_clk_gate_ops_no_setclr_inv, \
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}
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static const struct mtk_gate sgmii_clks[2][4] = {
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{
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GATE_SGMII(CLK_SGMII_TX_EN, "sgmii_tx_en",
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"ssusb_tx250m", 2),
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GATE_SGMII(CLK_SGMII_RX_EN, "sgmii_rx_en",
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"ssusb_eq_rx250m", 3),
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GATE_SGMII(CLK_SGMII_CDR_REF, "sgmii_cdr_ref",
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"ssusb_cdr_ref", 4),
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GATE_SGMII(CLK_SGMII_CDR_FB, "sgmii_cdr_fb",
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"ssusb_cdr_fb", 5),
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}, {
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GATE_SGMII(CLK_SGMII_TX_EN, "sgmii_tx_en1",
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"ssusb_tx250m", 2),
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GATE_SGMII(CLK_SGMII_RX_EN, "sgmii_rx_en1",
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"ssusb_eq_rx250m", 3),
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GATE_SGMII(CLK_SGMII_CDR_REF, "sgmii_cdr_ref1",
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"ssusb_cdr_ref", 4),
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GATE_SGMII(CLK_SGMII_CDR_FB, "sgmii_cdr_fb1",
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"ssusb_cdr_fb", 5),
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}
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};
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static int clk_mt7629_ethsys_init(struct platform_device *pdev)
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{
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struct clk_onecell_data *clk_data;
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struct device_node *node = pdev->dev.of_node;
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int r;
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clk_data = mtk_alloc_clk_data(CLK_ETH_NR_CLK);
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mtk_clk_register_gates(node, eth_clks, CLK_ETH_NR_CLK, clk_data);
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r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
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if (r)
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dev_err(&pdev->dev,
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"could not register clock provider: %s: %d\n",
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pdev->name, r);
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mtk_register_reset_controller(node, 1, 0x34);
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return r;
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}
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static int clk_mt7629_sgmiisys_init(struct platform_device *pdev)
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{
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struct clk_onecell_data *clk_data;
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struct device_node *node = pdev->dev.of_node;
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static int id;
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int r;
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clk_data = mtk_alloc_clk_data(CLK_SGMII_NR_CLK);
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mtk_clk_register_gates(node, sgmii_clks[id++], CLK_SGMII_NR_CLK,
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clk_data);
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r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
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if (r)
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dev_err(&pdev->dev,
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"could not register clock provider: %s: %d\n",
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pdev->name, r);
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return r;
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}
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static const struct of_device_id of_match_clk_mt7629_eth[] = {
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{
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.compatible = "mediatek,mt7629-ethsys",
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.data = clk_mt7629_ethsys_init,
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}, {
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.compatible = "mediatek,mt7629-sgmiisys",
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.data = clk_mt7629_sgmiisys_init,
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}, {
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/* sentinel */
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}
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};
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static int clk_mt7629_eth_probe(struct platform_device *pdev)
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{
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int (*clk_init)(struct platform_device *);
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int r;
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clk_init = of_device_get_match_data(&pdev->dev);
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if (!clk_init)
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return -EINVAL;
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r = clk_init(pdev);
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if (r)
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dev_err(&pdev->dev,
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"could not register clock provider: %s: %d\n",
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pdev->name, r);
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return r;
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}
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static struct platform_driver clk_mt7629_eth_drv = {
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.probe = clk_mt7629_eth_probe,
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.driver = {
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.name = "clk-mt7629-eth",
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.of_match_table = of_match_clk_mt7629_eth,
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},
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};
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builtin_platform_driver(clk_mt7629_eth_drv);
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