xref: /openbmc/linux/drivers/clk/mediatek/clk-mt8188-ccu.c (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1*87d06fa9SGarmin.Chang // SPDX-License-Identifier: GPL-2.0-only
2*87d06fa9SGarmin.Chang /*
3*87d06fa9SGarmin.Chang  * Copyright (c) 2022 MediaTek Inc.
4*87d06fa9SGarmin.Chang  * Author: Garmin Chang <garmin.chang@mediatek.com>
5*87d06fa9SGarmin.Chang  */
6*87d06fa9SGarmin.Chang 
7*87d06fa9SGarmin.Chang #include <dt-bindings/clock/mediatek,mt8188-clk.h>
8*87d06fa9SGarmin.Chang #include <linux/clk-provider.h>
9*87d06fa9SGarmin.Chang #include <linux/platform_device.h>
10*87d06fa9SGarmin.Chang 
11*87d06fa9SGarmin.Chang #include "clk-gate.h"
12*87d06fa9SGarmin.Chang #include "clk-mtk.h"
13*87d06fa9SGarmin.Chang 
14*87d06fa9SGarmin.Chang static const struct mtk_gate_regs ccu_cg_regs = {
15*87d06fa9SGarmin.Chang 	.set_ofs = 0x4,
16*87d06fa9SGarmin.Chang 	.clr_ofs = 0x8,
17*87d06fa9SGarmin.Chang 	.sta_ofs = 0x0,
18*87d06fa9SGarmin.Chang };
19*87d06fa9SGarmin.Chang 
20*87d06fa9SGarmin.Chang #define GATE_CCU(_id, _name, _parent, _shift)			\
21*87d06fa9SGarmin.Chang 	GATE_MTK(_id, _name, _parent, &ccu_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
22*87d06fa9SGarmin.Chang 
23*87d06fa9SGarmin.Chang static const struct mtk_gate ccu_clks[] = {
24*87d06fa9SGarmin.Chang 	GATE_CCU(CLK_CCU_LARB27, "ccu_larb27", "top_ccu", 0),
25*87d06fa9SGarmin.Chang 	GATE_CCU(CLK_CCU_AHB, "ccu_ahb", "top_ccu", 1),
26*87d06fa9SGarmin.Chang 	GATE_CCU(CLK_CCU_CCU0, "ccu_ccu0", "top_ccu", 2),
27*87d06fa9SGarmin.Chang };
28*87d06fa9SGarmin.Chang 
29*87d06fa9SGarmin.Chang static const struct mtk_clk_desc ccu_desc = {
30*87d06fa9SGarmin.Chang 	.clks = ccu_clks,
31*87d06fa9SGarmin.Chang 	.num_clks = ARRAY_SIZE(ccu_clks),
32*87d06fa9SGarmin.Chang };
33*87d06fa9SGarmin.Chang 
34*87d06fa9SGarmin.Chang static const struct of_device_id of_match_clk_mt8188_ccu[] = {
35*87d06fa9SGarmin.Chang 	{ .compatible = "mediatek,mt8188-ccusys", .data = &ccu_desc },
36*87d06fa9SGarmin.Chang 	{ /* sentinel */ }
37*87d06fa9SGarmin.Chang };
38*87d06fa9SGarmin.Chang MODULE_DEVICE_TABLE(of, of_match_clk_mt8188_ccu);
39*87d06fa9SGarmin.Chang 
40*87d06fa9SGarmin.Chang static struct platform_driver clk_mt8188_ccu_drv = {
41*87d06fa9SGarmin.Chang 	.probe = mtk_clk_simple_probe,
42*87d06fa9SGarmin.Chang 	.remove_new = mtk_clk_simple_remove,
43*87d06fa9SGarmin.Chang 	.driver = {
44*87d06fa9SGarmin.Chang 		.name = "clk-mt8188-ccu",
45*87d06fa9SGarmin.Chang 		.of_match_table = of_match_clk_mt8188_ccu,
46*87d06fa9SGarmin.Chang 	},
47*87d06fa9SGarmin.Chang };
48*87d06fa9SGarmin.Chang 
49*87d06fa9SGarmin.Chang module_platform_driver(clk_mt8188_ccu_drv);
50*87d06fa9SGarmin.Chang MODULE_LICENSE("GPL");
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