1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (c) 2014 MediaTek Inc.
 4 * Author: Shunli Wang <shunli.wang@mediatek.com>
 5 */
 6
 7#include <linux/clk-provider.h>
 8#include <linux/platform_device.h>
 9
10#include "clk-mtk.h"
11#include "clk-gate.h"
12
13#include <dt-bindings/clock/mt2701-clk.h>
14
15static const struct mtk_gate_regs eth_cg_regs = {
16	.sta_ofs = 0x0030,
17};
18
19#define GATE_ETH(_id, _name, _parent, _shift) {		\
20		.id = _id,				\
21		.name = _name,				\
22		.parent_name = _parent,			\
23		.regs = &eth_cg_regs,			\
24		.shift = _shift,			\
25		.ops = &mtk_clk_gate_ops_no_setclr_inv,	\
26	}
27
28static const struct mtk_gate eth_clks[] = {
29	GATE_ETH(CLK_ETHSYS_HSDMA, "hsdma_clk", "ethif_sel", 5),
30	GATE_ETH(CLK_ETHSYS_ESW, "esw_clk", "ethpll_500m_ck", 6),
31	GATE_ETH(CLK_ETHSYS_GP2, "gp2_clk", "trgpll", 7),
32	GATE_ETH(CLK_ETHSYS_GP1, "gp1_clk", "ethpll_500m_ck", 8),
33	GATE_ETH(CLK_ETHSYS_PCM, "pcm_clk", "ethif_sel", 11),
34	GATE_ETH(CLK_ETHSYS_GDMA, "gdma_clk", "ethif_sel", 14),
35	GATE_ETH(CLK_ETHSYS_I2S, "i2s_clk", "ethif_sel", 17),
36	GATE_ETH(CLK_ETHSYS_CRYPTO, "crypto_clk", "ethif_sel", 29),
37};
38
39static const struct of_device_id of_match_clk_mt2701_eth[] = {
40	{ .compatible = "mediatek,mt2701-ethsys", },
41	{}
42};
43
44static int clk_mt2701_eth_probe(struct platform_device *pdev)
45{
46	struct clk_onecell_data *clk_data;
47	int r;
48	struct device_node *node = pdev->dev.of_node;
49
50	clk_data = mtk_alloc_clk_data(CLK_ETHSYS_NR);
51
52	mtk_clk_register_gates(node, eth_clks, ARRAY_SIZE(eth_clks),
53						clk_data);
54
55	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
56	if (r)
57		dev_err(&pdev->dev,
58			"could not register clock provider: %s: %d\n",
59			pdev->name, r);
60
61	mtk_register_reset_controller(node, 1, 0x34);
62
63	return r;
64}
65
66static struct platform_driver clk_mt2701_eth_drv = {
67	.probe = clk_mt2701_eth_probe,
68	.driver = {
69		.name = "clk-mt2701-eth",
70		.of_match_table = of_match_clk_mt2701_eth,
71	},
72};
73
74builtin_platform_driver(clk_mt2701_eth_drv);