clk-mt7629-hif.c
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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_PCIE(_id, _name, _parent, _shift) { \
.id = _id, \
.name = _name, \
.parent_name = _parent, \
.regs = &pcie_cg_regs, \
.shift = _shift, \
.ops = &mtk_clk_gate_ops_no_setclr_inv, \
}
#define GATE_SSUSB(_id, _name, _parent, _shift) { \
.id = _id, \
.name = _name, \
.parent_name = _parent, \
.regs = &ssusb_cg_regs, \
.shift = _shift, \
.ops = &mtk_clk_gate_ops_no_setclr_inv, \
}
static const struct mtk_gate_regs pcie_cg_regs = {
.set_ofs = 0x30,
.clr_ofs = 0x30,
.sta_ofs = 0x30,
};
static const struct mtk_gate_regs ssusb_cg_regs = {
.set_ofs = 0x30,
.clr_ofs = 0x30,
.sta_ofs = 0x30,
};
static const struct mtk_gate ssusb_clks[] = {
GATE_SSUSB(CLK_SSUSB_U2_PHY_1P_EN, "ssusb_u2_phy_1p",
"to_u2_phy_1p", 0),
GATE_SSUSB(CLK_SSUSB_U2_PHY_EN, "ssusb_u2_phy_en", "to_u2_phy", 1),
GATE_SSUSB(CLK_SSUSB_REF_EN, "ssusb_ref_en", "to_usb3_ref", 5),
GATE_SSUSB(CLK_SSUSB_SYS_EN, "ssusb_sys_en", "to_usb3_sys", 6),
GATE_SSUSB(CLK_SSUSB_MCU_EN, "ssusb_mcu_en", "to_usb3_mcu", 7),
GATE_SSUSB(CLK_SSUSB_DMA_EN, "ssusb_dma_en", "to_usb3_dma", 8),
};
static const struct mtk_gate pcie_clks[] = {
GATE_PCIE(CLK_PCIE_P1_AUX_EN, "pcie_p1_aux_en", "p1_1mhz", 12),
GATE_PCIE(CLK_PCIE_P1_OBFF_EN, "pcie_p1_obff_en", "free_run_4mhz", 13),
GATE_PCIE(CLK_PCIE_P1_AHB_EN, "pcie_p1_ahb_en", "from_top_ahb", 14),
GATE_PCIE(CLK_PCIE_P1_AXI_EN, "pcie_p1_axi_en", "from_top_axi", 15),
GATE_PCIE(CLK_PCIE_P1_MAC_EN, "pcie_p1_mac_en", "pcie1_mac_en", 16),
GATE_PCIE(CLK_PCIE_P1_PIPE_EN, "pcie_p1_pipe_en", "pcie1_pipe_en", 17),
GATE_PCIE(CLK_PCIE_P0_AUX_EN, "pcie_p0_aux_en", "p0_1mhz", 18),
GATE_PCIE(CLK_PCIE_P0_OBFF_EN, "pcie_p0_obff_en", "free_run_4mhz", 19),
GATE_PCIE(CLK_PCIE_P0_AHB_EN, "pcie_p0_ahb_en", "from_top_ahb", 20),
GATE_PCIE(CLK_PCIE_P0_AXI_EN, "pcie_p0_axi_en", "from_top_axi", 21),
GATE_PCIE(CLK_PCIE_P0_MAC_EN, "pcie_p0_mac_en", "pcie0_mac_en", 22),
GATE_PCIE(CLK_PCIE_P0_PIPE_EN, "pcie_p0_pipe_en", "pcie0_pipe_en", 23),
};
static int clk_mt7629_ssusbsys_init(struct platform_device *pdev)
{
struct clk_onecell_data *clk_data;
struct device_node *node = pdev->dev.of_node;
int r;
clk_data = mtk_alloc_clk_data(CLK_SSUSB_NR_CLK);
mtk_clk_register_gates(node, ssusb_clks, ARRAY_SIZE(ssusb_clks),
clk_data);
r = of_clk_add_provider(node, of_clk_src_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(node, 1, 0x34);
return r;
}
static int clk_mt7629_pciesys_init(struct platform_device *pdev)
{
struct clk_onecell_data *clk_data;
struct device_node *node = pdev->dev.of_node;
int r;
clk_data = mtk_alloc_clk_data(CLK_PCIE_NR_CLK);
mtk_clk_register_gates(node, pcie_clks, ARRAY_SIZE(pcie_clks),
clk_data);
r = of_clk_add_provider(node, of_clk_src_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(node, 1, 0x34);
return r;
}
static const struct of_device_id of_match_clk_mt7629_hif[] = {
{
.compatible = "mediatek,mt7629-pciesys",
.data = clk_mt7629_pciesys_init,
}, {
.compatible = "mediatek,mt7629-ssusbsys",
.data = clk_mt7629_ssusbsys_init,
}, {
/* sentinel */
}
};
static int clk_mt7629_hif_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_hif_drv = {
.probe = clk_mt7629_hif_probe,
.driver = {
.name = "clk-mt7629-hif",
.of_match_table = of_match_clk_mt7629_hif,
},
};
builtin_platform_driver(clk_mt7629_hif_drv);