drivers/clk/mediatek/clk-mt6779.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt6779.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt6779.c
Extension
.c
Size
38650 bytes
Lines
1336
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) 2019 MediaTek Inc.
 * Author: Wendell Lin <wendell.lin@mediatek.com>
 */

#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>

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

#include <dt-bindings/clock/mt6779-clk.h>

static DEFINE_SPINLOCK(mt6779_clk_lock);

static const struct mtk_fixed_clk top_fixed_clks[] = {
	FIXED_CLK(CLK_TOP_CLK26M, "f_f26m_ck", "clk26m", 26000000),
};

static const struct mtk_fixed_factor top_divs[] = {
	FACTOR(CLK_TOP_CLK13M, "clk13m", "clk26m", 1, 2),
	FACTOR(CLK_TOP_F26M_CK_D2, "csw_f26m_ck_d2", "clk26m", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_CK, "mainpll_ck", "mainpll", 1, 1),
	FACTOR(CLK_TOP_MAINPLL_D2, "mainpll_d2", "mainpll_ck", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_D2_D2, "mainpll_d2_d2", "mainpll_d2", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_D2_D4, "mainpll_d2_d4", "mainpll_d2", 1, 4),
	FACTOR(CLK_TOP_MAINPLL_D2_D8, "mainpll_d2_d8", "mainpll_d2", 1, 8),
	FACTOR(CLK_TOP_MAINPLL_D2_D16, "mainpll_d2_d16", "mainpll_d2", 1, 16),
	FACTOR(CLK_TOP_MAINPLL_D3, "mainpll_d3", "mainpll", 1, 3),
	FACTOR(CLK_TOP_MAINPLL_D3_D2, "mainpll_d3_d2", "mainpll_d3", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_D3_D4, "mainpll_d3_d4", "mainpll_d3", 1, 4),
	FACTOR(CLK_TOP_MAINPLL_D3_D8, "mainpll_d3_d8", "mainpll_d3", 1, 8),
	FACTOR(CLK_TOP_MAINPLL_D5, "mainpll_d5", "mainpll", 1, 5),
	FACTOR(CLK_TOP_MAINPLL_D5_D2, "mainpll_d5_d2", "mainpll_d5", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_D5_D4, "mainpll_d5_d4", "mainpll_d5", 1, 4),
	FACTOR(CLK_TOP_MAINPLL_D7, "mainpll_d7", "mainpll", 1, 7),
	FACTOR(CLK_TOP_MAINPLL_D7_D2, "mainpll_d7_d2", "mainpll_d7", 1, 2),
	FACTOR(CLK_TOP_MAINPLL_D7_D4, "mainpll_d7_d4", "mainpll_d7", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL_CK, "univpll", "univ2pll", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univpll", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D2_D2, "univpll_d2_d2", "univpll_d2", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D2_D4, "univpll_d2_d4", "univpll_d2", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL_D2_D8, "univpll_d2_d8", "univpll_d2", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univpll", 1, 3),
	FACTOR(CLK_TOP_UNIVPLL_D3_D2, "univpll_d3_d2", "univpll_d3", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D3_D4, "univpll_d3_d4", "univpll_d3", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL_D3_D8, "univpll_d3_d8", "univpll_d3", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D3_D16, "univpll_d3_d16", "univpll_d3", 1, 16),
	FACTOR(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univpll", 1, 5),
	FACTOR(CLK_TOP_UNIVPLL_D5_D2, "univpll_d5_d2", "univpll_d5", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D5_D4, "univpll_d5_d4", "univpll_d5", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL_D5_D8, "univpll_d5_d8", "univpll_d5", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univpll", 1, 7),
	FACTOR(CLK_TOP_UNIVP_192M_CK, "univpll_192m_ck", "univ2pll", 1, 13),
	FACTOR(CLK_TOP_UNIVP_192M_D2, "univpll_192m_d2", "univpll_192m_ck",
	       1, 2),
	FACTOR(CLK_TOP_UNIVP_192M_D4, "univpll_192m_d4", "univpll_192m_ck",
	       1, 4),
	FACTOR(CLK_TOP_UNIVP_192M_D8, "univpll_192m_d8", "univpll_192m_ck",
	       1, 8),
	FACTOR(CLK_TOP_UNIVP_192M_D16, "univpll_192m_d16", "univpll_192m_ck",
	       1, 16),
	FACTOR(CLK_TOP_UNIVP_192M_D32, "univpll_192m_d32", "univpll_192m_ck",
	       1, 32),
	FACTOR(CLK_TOP_APLL1_CK, "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_CK, "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_TVDPLL_CK, "tvdpll_ck", "tvdpll", 1, 1),
	FACTOR(CLK_TOP_TVDPLL_D2, "tvdpll_d2", "tvdpll_ck", 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_MMPLL_CK, "mmpll_ck", "mmpll", 1, 1),
	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_D4_D4, "mmpll_d4_d4", "mmpll_d4", 1, 4),
	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_D5_D4, "mmpll_d5_d4", "mmpll_d5", 1, 4),
	FACTOR(CLK_TOP_MMPLL_D6, "mmpll_d6", "mmpll", 1, 6),
	FACTOR(CLK_TOP_MMPLL_D7, "mmpll_d7", "mmpll", 1, 7),

Annotation

Implementation Notes