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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: Shunli Wang <shunli.wang@mediatek.com>
*/
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include "clk-mtk.h"
#include "clk-gate.h"
#include <dt-bindings/clock/mt2701-clk.h>
static const struct mtk_gate_regs hif_cg_regs = {
.sta_ofs = 0x0030,
};
#define GATE_HIF(_id, _name, _parent, _shift) \
GATE_MTK(_id, _name, _parent, &hif_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
static const struct mtk_gate hif_clks[] = {
GATE_HIF(CLK_HIFSYS_USB0PHY, "usb0_phy_clk", "ethpll_500m_ck", 21),
GATE_HIF(CLK_HIFSYS_USB1PHY, "usb1_phy_clk", "ethpll_500m_ck", 22),
GATE_HIF(CLK_HIFSYS_PCIE0, "pcie0_clk", "ethpll_500m_ck", 24),
GATE_HIF(CLK_HIFSYS_PCIE1, "pcie1_clk", "ethpll_500m_ck", 25),
GATE_HIF(CLK_HIFSYS_PCIE2, "pcie2_clk", "ethpll_500m_ck", 26),
};
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 const struct of_device_id of_match_clk_mt2701_hif[] = {
{ .compatible = "mediatek,mt2701-hifsys", },
{}
};
static int clk_mt2701_hif_probe(struct platform_device *pdev)
{
struct clk_hw_onecell_data *clk_data;
int r;
struct device_node *node = pdev->dev.of_node;
clk_data = mtk_alloc_clk_data(CLK_HIFSYS_NR);
mtk_clk_register_gates(&pdev->dev, node, hif_clks,
ARRAY_SIZE(hif_clks), 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;
}
mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
return 0;
}
static struct platform_driver clk_mt2701_hif_drv = {
.probe = clk_mt2701_hif_probe,
.driver = {
.name = "clk-mt2701-hif",
.of_match_table = of_match_clk_mt2701_hif,
},
};
builtin_platform_driver(clk_mt2701_hif_drv);
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