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// 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/of_address.h>
#include <linux/of_device.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");
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