drivers/clk/mediatek/clk-mt8192.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt8192.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt8192.c
Extension
.c
Size
36149 bytes
Lines
1035
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-only
//
// Copyright (c) 2021 MediaTek Inc.
// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/mfd/syscon.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include "clk-gate.h"
#include "clk-mtk.h"
#include "clk-mux.h"

#include <dt-bindings/clock/mt8192-clk.h>
#include <dt-bindings/reset/mt8192-resets.h>

static DEFINE_SPINLOCK(mt8192_clk_lock);

static const struct mtk_fixed_clk top_fixed_clks[] = {
	FIXED_CLK(CLK_TOP_ULPOSC, "ulposc", NULL, 260000000),
};

static const struct mtk_fixed_factor top_divs[] = {
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D3, "mainpll_d3", "mainpll", 1, 3, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4, "mainpll_d4", "mainpll", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4_D2, "mainpll_d4_d2", "mainpll_d4", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4_D4, "mainpll_d4_d4", "mainpll_d4", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4_D8, "mainpll_d4_d8", "mainpll_d4", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4_D16, "mainpll_d4_d16", "mainpll_d4", 1, 16, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D5, "mainpll_d5", "mainpll", 1, 5, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D5_D2, "mainpll_d5_d2", "mainpll_d5", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D5_D4, "mainpll_d5_d4", "mainpll_d5", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D5_D8, "mainpll_d5_d8", "mainpll_d5", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D6, "mainpll_d6", "mainpll", 1, 6, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D6_D2, "mainpll_d6_d2", "mainpll_d6", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D6_D4, "mainpll_d6_d4", "mainpll_d6", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D7, "mainpll_d7", "mainpll", 1, 7, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D7_D2, "mainpll_d7_d2", "mainpll_d7", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D7_D4, "mainpll_d7_d4", "mainpll_d7", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_MAINPLL_D7_D8, "mainpll_d7_d8", "mainpll_d7", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univpll", 1, 3, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D4, "univpll_d4", "univpll", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D4_D2, "univpll_d4_d2", "univpll_d4", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D4_D4, "univpll_d4_d4", "univpll_d4", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D4_D8, "univpll_d4_d8", "univpll_d4", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univpll", 1, 5, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D5_D2, "univpll_d5_d2", "univpll_d5", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D5_D4, "univpll_d5_d4", "univpll_d5", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D5_D8, "univpll_d5_d8", "univpll_d5", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D6, "univpll_d6", "univpll", 1, 6, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D6_D2, "univpll_d6_d2", "univpll_d6", 1, 2, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D6_D4, "univpll_d6_d4", "univpll_d6", 1, 4, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D6_D8, "univpll_d6_d8", "univpll_d6", 1, 8, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D6_D16, "univpll_d6_d16", "univpll_d6", 1, 16, 0),
	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univpll", 1, 7, 0),
	FACTOR(CLK_TOP_APLL1, "apll1_ck", "apll1", 1, 1),
	FACTOR(CLK_TOP_APLL1_D2, "apll1_d2", "apll1", 1, 2),
	FACTOR(CLK_TOP_APLL1_D4, "apll1_d4", "apll1", 1, 4),
	FACTOR(CLK_TOP_APLL1_D8, "apll1_d8", "apll1", 1, 8),
	FACTOR(CLK_TOP_APLL2, "apll2_ck", "apll2", 1, 1),
	FACTOR(CLK_TOP_APLL2_D2, "apll2_d2", "apll2", 1, 2),
	FACTOR(CLK_TOP_APLL2_D4, "apll2_d4", "apll2", 1, 4),
	FACTOR(CLK_TOP_APLL2_D8, "apll2_d8", "apll2", 1, 8),
	FACTOR(CLK_TOP_MMPLL_D4, "mmpll_d4", "mmpll", 1, 4),
	FACTOR(CLK_TOP_MMPLL_D4_D2, "mmpll_d4_d2", "mmpll_d4", 1, 2),
	FACTOR(CLK_TOP_MMPLL_D5, "mmpll_d5", "mmpll", 1, 5),
	FACTOR(CLK_TOP_MMPLL_D5_D2, "mmpll_d5_d2", "mmpll_d5", 1, 2),
	FACTOR(CLK_TOP_MMPLL_D6, "mmpll_d6", "mmpll", 1, 6),
	FACTOR(CLK_TOP_MMPLL_D6_D2, "mmpll_d6_d2", "mmpll_d6", 1, 2),
	FACTOR(CLK_TOP_MMPLL_D7, "mmpll_d7", "mmpll", 1, 7),
	FACTOR(CLK_TOP_MMPLL_D9, "mmpll_d9", "mmpll", 1, 9),
	FACTOR(CLK_TOP_APUPLL, "apupll_ck", "apupll", 1, 2),
	FACTOR(CLK_TOP_NPUPLL, "npupll_ck", "npupll", 1, 1),
	FACTOR(CLK_TOP_TVDPLL, "tvdpll_ck", "tvdpll", 1, 1),
	FACTOR(CLK_TOP_TVDPLL_D2, "tvdpll_d2", "tvdpll", 1, 2),
	FACTOR(CLK_TOP_TVDPLL_D4, "tvdpll_d4", "tvdpll", 1, 4),
	FACTOR(CLK_TOP_TVDPLL_D8, "tvdpll_d8", "tvdpll", 1, 8),
	FACTOR(CLK_TOP_TVDPLL_D16, "tvdpll_d16", "tvdpll", 1, 16),
	FACTOR(CLK_TOP_MSDCPLL, "msdcpll_ck", "msdcpll", 1, 1),
	FACTOR(CLK_TOP_MSDCPLL_D2, "msdcpll_d2", "msdcpll", 1, 2),
	FACTOR(CLK_TOP_MSDCPLL_D4, "msdcpll_d4", "msdcpll", 1, 4),
	FACTOR(CLK_TOP_OSC_D2, "osc_d2", "ulposc", 1, 2),
	FACTOR(CLK_TOP_OSC_D4, "osc_d4", "ulposc", 1, 4),
	FACTOR(CLK_TOP_OSC_D8, "osc_d8", "ulposc", 1, 8),
	FACTOR(CLK_TOP_OSC_D10, "osc_d10", "ulposc", 1, 10),
	FACTOR(CLK_TOP_OSC_D16, "osc_d16", "ulposc", 1, 16),
	FACTOR(CLK_TOP_OSC_D20, "osc_d20", "ulposc", 1, 20),

Annotation

Implementation Notes