drivers/clk/mediatek/clk-mt2712.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt2712.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt2712.c
Extension
.c
Size
29859 bytes
Lines
1006
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) 2017 MediaTek Inc.
 * Author: Weiyi Lu <weiyi.lu@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 <dt-bindings/clock/mt2712-clk.h>

static DEFINE_SPINLOCK(mt2712_clk_lock);

static const struct mtk_fixed_clk top_fixed_clks[] = {
	FIXED_CLK(CLK_TOP_VPLL3_DPIX, "vpll3_dpix", NULL, 200000000),
	FIXED_CLK(CLK_TOP_VPLL_DPIX, "vpll_dpix", NULL, 200000000),
	FIXED_CLK(CLK_TOP_LTEPLL_FS26M, "ltepll_fs26m", NULL, 26000000),
	FIXED_CLK(CLK_TOP_DMPLL, "dmpll_ck", NULL, 350000000),
	FIXED_CLK(CLK_TOP_DSI0_LNTC, "dsi0_lntc", NULL, 143000000),
	FIXED_CLK(CLK_TOP_DSI1_LNTC, "dsi1_lntc", NULL, 143000000),
	FIXED_CLK(CLK_TOP_LVDSTX3_CLKDIG_CTS, "lvdstx3", NULL, 140000000),
	FIXED_CLK(CLK_TOP_LVDSTX_CLKDIG_CTS, "lvdstx", NULL, 140000000),
	FIXED_CLK(CLK_TOP_CLKRTC_EXT, "clkrtc_ext", NULL, 32768),
	FIXED_CLK(CLK_TOP_CLKRTC_INT, "clkrtc_int", NULL, 32747),
	FIXED_CLK(CLK_TOP_CSI0, "csi0", NULL, 26000000),
	FIXED_CLK(CLK_TOP_CVBSPLL, "cvbspll", NULL, 108000000),
};

static const struct mtk_fixed_factor top_divs[] = {
	FACTOR(CLK_TOP_SYS_26M, "sys_26m", "clk26m", 1, 1),
	FACTOR(CLK_TOP_CLK26M_D2, "clk26m_d2", "sys_26m", 1, 2),
	FACTOR(CLK_TOP_ARMCA35PLL, "armca35pll_ck", "armca35pll", 1, 1),
	FACTOR(CLK_TOP_ARMCA35PLL_600M, "armca35pll_600m", "armca35pll_ck", 1, 2),
	FACTOR(CLK_TOP_ARMCA35PLL_400M, "armca35pll_400m", "armca35pll_ck", 1, 3),
	FACTOR(CLK_TOP_ARMCA72PLL, "armca72pll_ck", "armca72pll", 1, 1),
	FACTOR(CLK_TOP_SYSPLL, "syspll_ck", "mainpll", 1, 1),
	FACTOR(CLK_TOP_SYSPLL_D2, "syspll_d2", "syspll_ck", 1, 2),
	FACTOR(CLK_TOP_SYSPLL1_D2, "syspll1_d2", "syspll_d2", 1, 2),
	FACTOR(CLK_TOP_SYSPLL1_D4, "syspll1_d4", "syspll_d2", 1, 4),
	FACTOR(CLK_TOP_SYSPLL1_D8, "syspll1_d8", "syspll_d2", 1, 8),
	FACTOR(CLK_TOP_SYSPLL1_D16, "syspll1_d16", "syspll_d2", 1, 16),
	FACTOR(CLK_TOP_SYSPLL_D3, "syspll_d3", "syspll_ck", 1, 3),
	FACTOR(CLK_TOP_SYSPLL2_D2, "syspll2_d2", "syspll_d3", 1, 2),
	FACTOR(CLK_TOP_SYSPLL2_D4, "syspll2_d4", "syspll_d3", 1, 4),
	FACTOR(CLK_TOP_SYSPLL_D5, "syspll_d5", "syspll_ck", 1, 5),
	FACTOR(CLK_TOP_SYSPLL3_D2, "syspll3_d2", "syspll_d5", 1, 2),
	FACTOR(CLK_TOP_SYSPLL3_D4, "syspll3_d4", "syspll_d5", 1, 4),
	FACTOR(CLK_TOP_SYSPLL_D7, "syspll_d7", "syspll_ck", 1, 7),
	FACTOR(CLK_TOP_SYSPLL4_D2, "syspll4_d2", "syspll_d7", 1, 2),
	FACTOR(CLK_TOP_SYSPLL4_D4, "syspll4_d4", "syspll_d7", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL, "univpll_ck", "univpll", 1, 1),
	FACTOR(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univpll_ck", 1, 7),
	FACTOR(CLK_TOP_UNIVPLL_D26, "univpll_d26", "univpll_ck", 1, 26),
	FACTOR(CLK_TOP_UNIVPLL_D52, "univpll_d52", "univpll_ck", 1, 52),
	FACTOR(CLK_TOP_UNIVPLL_D104, "univpll_d104", "univpll_ck", 1, 104),
	FACTOR(CLK_TOP_UNIVPLL_D208, "univpll_d208", "univpll_ck", 1, 208),
	FACTOR(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univpll_ck", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL1_D2, "univpll1_d2", "univpll_d2", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL1_D4, "univpll1_d4", "univpll_d2", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL1_D8, "univpll1_d8", "univpll_d2", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univpll_ck", 1, 3),
	FACTOR(CLK_TOP_UNIVPLL2_D2, "univpll2_d2", "univpll_d3", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL2_D4, "univpll2_d4", "univpll_d3", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL2_D8, "univpll2_d8", "univpll_d3", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univpll_ck", 1, 5),
	FACTOR(CLK_TOP_UNIVPLL3_D2, "univpll3_d2", "univpll_d5", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL3_D4, "univpll3_d4", "univpll_d5", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL3_D8, "univpll3_d8", "univpll_d5", 1, 8),
	FACTOR(CLK_TOP_F_MP0_PLL1, "f_mp0_pll1_ck", "univpll_d2", 1, 1),
	FACTOR(CLK_TOP_F_MP0_PLL2, "f_mp0_pll2_ck", "univpll1_d2", 1, 1),
	FACTOR(CLK_TOP_F_BIG_PLL1, "f_big_pll1_ck", "univpll_d2", 1, 1),
	FACTOR(CLK_TOP_F_BIG_PLL2, "f_big_pll2_ck", "univpll1_d2", 1, 1),
	FACTOR(CLK_TOP_F_BUS_PLL1, "f_bus_pll1_ck", "univpll_d2", 1, 1),
	FACTOR(CLK_TOP_F_BUS_PLL2, "f_bus_pll2_ck", "univpll1_d2", 1, 1),
	FACTOR(CLK_TOP_APLL1, "apll1_ck", "apll1", 1, 1),
	FACTOR(CLK_TOP_APLL1_D2, "apll1_d2", "apll1_ck", 1, 2),
	FACTOR(CLK_TOP_APLL1_D4, "apll1_d4", "apll1_ck", 1, 4),
	FACTOR(CLK_TOP_APLL1_D8, "apll1_d8", "apll1_ck", 1, 8),
	FACTOR(CLK_TOP_APLL1_D16, "apll1_d16", "apll1_ck", 1, 16),
	FACTOR(CLK_TOP_APLL2, "apll2_ck", "apll2", 1, 1),
	FACTOR(CLK_TOP_APLL2_D2, "apll2_d2", "apll2_ck", 1, 2),
	FACTOR(CLK_TOP_APLL2_D4, "apll2_d4", "apll2_ck", 1, 4),
	FACTOR(CLK_TOP_APLL2_D8, "apll2_d8", "apll2_ck", 1, 8),

Annotation

Implementation Notes