drivers/clk/mediatek/clk-mt8365.c

Source file repositories/reference/linux-study-clean/drivers/clk/mediatek/clk-mt8365.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mediatek/clk-mt8365.c
Extension
.c
Size
27167 bytes
Lines
818
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) 2022 MediaTek Inc.
 * Copyright (C) 2023 Collabora Ltd.
 *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
 */

#include <dt-bindings/clock/mediatek,mt8365-clk.h>
#include <linux/clk.h>
#include <linux/clk-provider.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"

static DEFINE_SPINLOCK(mt8365_clk_lock);

static const struct mtk_fixed_clk top_fixed_clks[] = {
	FIXED_CLK(CLK_TOP_CLK_NULL, "clk_null", NULL, 0),
	FIXED_CLK(CLK_TOP_I2S0_BCK, "i2s0_bck", NULL, 26000000),
	FIXED_CLK(CLK_TOP_DSI0_LNTC_DSICK, "dsi0_lntc_dsick", "clk26m",
		  75000000),
	FIXED_CLK(CLK_TOP_VPLL_DPIX, "vpll_dpix", "clk26m", 75000000),
	FIXED_CLK(CLK_TOP_LVDSTX_CLKDIG_CTS, "lvdstx_dig_cts", "clk26m",
		  52500000),
};

static const struct mtk_fixed_factor top_divs[] = {
	FACTOR(CLK_TOP_SYS_26M_D2, "sys_26m_d2", "clk26m", 1, 2),
	FACTOR(CLK_TOP_SYSPLL_D2, "syspll_d2", "mainpll", 1, 2),
	FACTOR(CLK_TOP_SYSPLL1_D2, "syspll1_d2", "mainpll", 1, 4),
	FACTOR(CLK_TOP_SYSPLL1_D4, "syspll1_d4", "mainpll", 1, 8),
	FACTOR(CLK_TOP_SYSPLL1_D8, "syspll1_d8", "mainpll", 1, 16),
	FACTOR(CLK_TOP_SYSPLL1_D16, "syspll1_d16", "mainpll", 1, 32),
	FACTOR(CLK_TOP_SYSPLL_D3, "syspll_d3", "mainpll", 1, 3),
	FACTOR(CLK_TOP_SYSPLL2_D2, "syspll2_d2", "mainpll", 1, 6),
	FACTOR(CLK_TOP_SYSPLL2_D4, "syspll2_d4", "mainpll", 1, 12),
	FACTOR(CLK_TOP_SYSPLL2_D8, "syspll2_d8", "mainpll", 1, 24),
	FACTOR(CLK_TOP_SYSPLL_D5, "syspll_d5", "mainpll", 1, 5),
	FACTOR(CLK_TOP_SYSPLL3_D2, "syspll3_d2", "mainpll", 1, 10),
	FACTOR(CLK_TOP_SYSPLL3_D4, "syspll3_d4", "mainpll", 1, 20),
	FACTOR(CLK_TOP_SYSPLL_D7, "syspll_d7", "mainpll", 1, 7),
	FACTOR(CLK_TOP_SYSPLL4_D2, "syspll4_d2", "mainpll", 1, 14),
	FACTOR(CLK_TOP_SYSPLL4_D4, "syspll4_d4", "mainpll", 1, 28),
	FACTOR(CLK_TOP_UNIVPLL, "univpll", "univ_en", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univpll", 1, 2),
	FACTOR(CLK_TOP_UNIVPLL1_D2, "univpll1_d2", "univpll", 1, 4),
	FACTOR(CLK_TOP_UNIVPLL1_D4, "univpll1_d4", "univpll", 1, 8),
	FACTOR(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univpll", 1, 3),
	FACTOR(CLK_TOP_UNIVPLL2_D2, "univpll2_d2", "univpll", 1, 6),
	FACTOR(CLK_TOP_UNIVPLL2_D4, "univpll2_d4", "univpll", 1, 12),
	FACTOR(CLK_TOP_UNIVPLL2_D8, "univpll2_d8", "univpll", 1, 24),
	FACTOR(CLK_TOP_UNIVPLL2_D32, "univpll2_d32", "univpll", 1, 96),
	FACTOR(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univpll", 1, 5),
	FACTOR(CLK_TOP_UNIVPLL3_D2, "univpll3_d2", "univpll", 1, 10),
	FACTOR(CLK_TOP_UNIVPLL3_D4, "univpll3_d4", "univpll", 1, 20),
	FACTOR(CLK_TOP_MMPLL, "mmpll_ck", "mmpll", 1, 1),
	FACTOR(CLK_TOP_MMPLL_D2, "mmpll_d2", "mmpll", 1, 2),
	FACTOR(CLK_TOP_MFGPLL, "mfgpll_ck", "mfgpll", 1, 1),
	FACTOR(CLK_TOP_LVDSPLL_D2, "lvdspll_d2", "lvdspll", 1, 2),
	FACTOR(CLK_TOP_LVDSPLL_D4, "lvdspll_d4", "lvdspll", 1, 4),
	FACTOR(CLK_TOP_LVDSPLL_D8, "lvdspll_d8", "lvdspll", 1, 8),
	FACTOR(CLK_TOP_LVDSPLL_D16, "lvdspll_d16", "lvdspll", 1, 16),
	FACTOR(CLK_TOP_USB20_192M, "usb20_192m_ck", "usb20_en", 1, 13),
	FACTOR(CLK_TOP_USB20_192M_D4, "usb20_192m_d4", "usb20_192m_ck", 1, 4),
	FACTOR(CLK_TOP_USB20_192M_D8, "usb20_192m_d8", "usb20_192m_ck", 1, 8),
	FACTOR(CLK_TOP_USB20_192M_D16, "usb20_192m_d16", "usb20_192m_ck",
	       1, 16),
	FACTOR(CLK_TOP_USB20_192M_D32, "usb20_192m_d32", "usb20_192m_ck",
	       1, 32),
	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_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),
	FACTOR(CLK_TOP_MSDCPLL, "msdcpll_ck", "msdcpll", 1, 1),
	FACTOR(CLK_TOP_MSDCPLL_D2, "msdcpll_d2", "msdcpll", 1, 2),
	FACTOR(CLK_TOP_DSPPLL, "dsppll_ck", "dsppll", 1, 1),
	FACTOR(CLK_TOP_DSPPLL_D2, "dsppll_d2", "dsppll", 1, 2),
	FACTOR(CLK_TOP_DSPPLL_D4, "dsppll_d4", "dsppll", 1, 4),
	FACTOR(CLK_TOP_DSPPLL_D8, "dsppll_d8", "dsppll", 1, 8),
	FACTOR(CLK_TOP_APUPLL, "apupll_ck", "apupll", 1, 1),

Annotation

Implementation Notes