drivers/clk/mediatek/clk-mt7988-apmixed.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt7988-apmixed.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt7988-apmixed.c
Extension
.c
Size
4080 bytes
Lines
117
Domain
Driver Families
Bucket
drivers/clk
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2023 MediaTek Inc.
 * Author: Sam Shih <sam.shih@mediatek.com>
 * Author: Xiufeng Li <Xiufeng.Li@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 "clk-mux.h"
#include "clk-pll.h"
#include <dt-bindings/clock/mediatek,mt7988-clk.h>

#define MT7988_PLL_FMAX (2500UL * MHZ)
#define MT7988_PCW_CHG_BIT 2

#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _rst_bar_mask, _pcwbits, _pd_reg,	\
	    _pd_shift, _tuner_reg, _tuner_en_reg, _tuner_en_bit, _pcw_reg, _pcw_shift,		\
	    _pcw_chg_reg)									\
	{											\
		.id = _id,									\
		.name = _name,									\
		.reg = _reg,									\
		.pwr_reg = _pwr_reg,								\
		.en_mask = _en_mask,								\
		.flags = _flags,								\
		.rst_bar_mask = BIT(_rst_bar_mask),						\
		.fmax = MT7988_PLL_FMAX,							\
		.pcwbits = _pcwbits,								\
		.pd_reg = _pd_reg,								\
		.pd_shift = _pd_shift,								\
		.tuner_reg = _tuner_reg,							\
		.tuner_en_reg = _tuner_en_reg,							\
		.tuner_en_bit = _tuner_en_bit,							\
		.pcw_reg = _pcw_reg,								\
		.pcw_shift = _pcw_shift,							\
		.pcw_chg_reg = _pcw_chg_reg,							\
		.pcw_chg_bit = MT7988_PCW_CHG_BIT,						\
		.parent_name = "clkxtal",							\
	}

static const struct mtk_pll_data plls[] = {
	PLL(CLK_APMIXED_NETSYSPLL, "netsyspll", 0x0104, 0x0110, 0x00000001, 0, 0, 32, 0x0104, 4, 0,
	    0, 0, 0x0108, 0, 0x0104),
	PLL(CLK_APMIXED_MPLL, "mpll", 0x0114, 0x0120, 0xff000001, HAVE_RST_BAR, 23, 32, 0x0114, 4,
	    0, 0, 0, 0x0118, 0, 0x0114),
	PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0124, 0x0130, 0xff000001, HAVE_RST_BAR, 23, 32, 0x0124, 4,
	    0, 0, 0, 0x0128, 0, 0x0124),
	PLL(CLK_APMIXED_APLL2, "apll2", 0x0134, 0x0140, 0x00000001, 0, 0, 32, 0x0134, 4, 0x0704,
	    0x0700, 1, 0x0138, 0, 0x0134),
	PLL(CLK_APMIXED_NET1PLL, "net1pll", 0x0144, 0x0150, 0xff000001, HAVE_RST_BAR, 23, 32,
	    0x0144, 4, 0, 0, 0, 0x0148, 0, 0x0144),
	PLL(CLK_APMIXED_NET2PLL, "net2pll", 0x0154, 0x0160, 0xff000001, (HAVE_RST_BAR | PLL_AO), 23,
	    32, 0x0154, 4, 0, 0, 0, 0x0158, 0, 0x0154),
	PLL(CLK_APMIXED_WEDMCUPLL, "wedmcupll", 0x0164, 0x0170, 0x00000001, 0, 0, 32, 0x0164, 4, 0,
	    0, 0, 0x0168, 0, 0x0164),
	PLL(CLK_APMIXED_SGMPLL, "sgmpll", 0x0174, 0x0180, 0x00000001, 0, 0, 32, 0x0174, 4, 0, 0, 0,
	    0x0178, 0, 0x0174),
	PLL(CLK_APMIXED_ARM_B, "arm_b", 0x0204, 0x0210, 0xff000001, (HAVE_RST_BAR | PLL_AO), 23, 32,
	    0x0204, 4, 0, 0, 0, 0x0208, 0, 0x0204),
	PLL(CLK_APMIXED_CCIPLL2_B, "ccipll2_b", 0x0214, 0x0220, 0xff000001, HAVE_RST_BAR, 23, 32,
	    0x0214, 4, 0, 0, 0, 0x0218, 0, 0x0214),
	PLL(CLK_APMIXED_USXGMIIPLL, "usxgmiipll", 0x0304, 0x0310, 0xff000001, HAVE_RST_BAR, 23, 32,
	    0x0304, 4, 0, 0, 0, 0x0308, 0, 0x0304),
	PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x0314, 0x0320, 0x00000001, 0, 0, 32, 0x0314, 4, 0, 0,
	    0, 0x0318, 0, 0x0314),
};

static const struct of_device_id of_match_clk_mt7988_apmixed[] = {
	{ .compatible = "mediatek,mt7988-apmixedsys" },
	{ /* sentinel */ }
};

static int clk_mt7988_apmixed_probe(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(ARRAY_SIZE(plls));
	if (!clk_data)
		return -ENOMEM;

	r = mtk_clk_register_plls(&pdev->dev, plls, ARRAY_SIZE(plls), clk_data);
	if (r)

Annotation

Implementation Notes