drivers/clk/renesas/r8a779h0-cpg-mssr.c

Source file repositories/reference/linux-study-clean/drivers/clk/renesas/r8a779h0-cpg-mssr.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/renesas/r8a779h0-cpg-mssr.c
Extension
.c
Size
12261 bytes
Lines
308
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
/*
 * r8a779h0 Clock Pulse Generator / Module Standby and Software Reset
 *
 * Copyright (C) 2023 Renesas Electronics Corp.
 *
 * Based on r8a779g0-cpg-mssr.c
 */

#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>

#include <dt-bindings/clock/renesas,r8a779h0-cpg-mssr.h>

#include "renesas-cpg-mssr.h"
#include "rcar-gen4-cpg.h"

enum clk_ids {
	/* Core Clock Outputs exported to DT */
	LAST_DT_CORE_CLK = R8A779H0_CLK_R,

	/* External Input Clocks */
	CLK_EXTAL,
	CLK_EXTALR,

	/* Internal Core Clocks */
	CLK_MAIN,
	CLK_PLL1,
	CLK_PLL2,
	CLK_PLL3,
	CLK_PLL4,
	CLK_PLL5,
	CLK_PLL6,
	CLK_PLL1_DIV2,
	CLK_PLL3_DIV2,
	CLK_PLL4_DIV2,
	CLK_PLL4_DIV5,
	CLK_PLL5_DIV2,
	CLK_PLL5_DIV4,
	CLK_PLL6_DIV2,
	CLK_S0,
	CLK_S0_VIO,
	CLK_S0_VC,
	CLK_S0_HSC,
	CLK_SASYNCPER,
	CLK_SV_VIP,
	CLK_SV_IR,
	CLK_IMPASRC,
	CLK_IMPBSRC,
	CLK_VIOSRC,
	CLK_VCSRC,
	CLK_SDSRC,
	CLK_RPCSRC,
	CLK_OCO,

	/* Module Clocks */
	MOD_CLK_BASE
};

static const struct cpg_core_clk r8a779h0_core_clks[] __initconst = {
	/* External Clock Inputs */
	DEF_INPUT("extal",	CLK_EXTAL),
	DEF_INPUT("extalr",	CLK_EXTALR),

	/* Internal Core Clocks */
	DEF_BASE(".main", CLK_MAIN,	CLK_TYPE_GEN4_MAIN,	CLK_EXTAL),
	DEF_GEN4_PLL_F8_25(".pll1", 1,	CLK_PLL1,		CLK_MAIN),
	DEF_GEN4_PLL_V8_25(".pll2", 2,	CLK_PLL2,		CLK_MAIN),
	DEF_GEN4_PLL_V8_25(".pll3", 3,	CLK_PLL3,		CLK_MAIN),
	DEF_GEN4_PLL_V8_25(".pll4", 4,	CLK_PLL4,		CLK_MAIN),
	DEF_BASE(".pll5", CLK_PLL5,	CLK_TYPE_GEN4_PLL5,	CLK_MAIN),
	DEF_GEN4_PLL_V8_25(".pll6", 6,	CLK_PLL6,		CLK_MAIN),

	DEF_FIXED(".pll1_div2",	CLK_PLL1_DIV2,	CLK_PLL1,	2, 1),
	DEF_FIXED(".pll3_div2",	CLK_PLL3_DIV2,	CLK_PLL3,	2, 1),
	DEF_FIXED(".pll4_div2",	CLK_PLL4_DIV2,	CLK_PLL4,	2, 1),
	DEF_FIXED(".pll4_div5",	CLK_PLL4_DIV5,	CLK_PLL4,	5, 1),
	DEF_FIXED(".pll5_div2",	CLK_PLL5_DIV2,	CLK_PLL5,	2, 1),
	DEF_FIXED(".pll5_div4",	CLK_PLL5_DIV4,	CLK_PLL5_DIV2,	2, 1),
	DEF_FIXED(".pll6_div2",	CLK_PLL6_DIV2,	CLK_PLL6,	2, 1),
	DEF_FIXED(".s0",	CLK_S0,		CLK_PLL1_DIV2,	2, 1),
	DEF_FIXED(".s0_vio",	CLK_S0_VIO,	CLK_PLL1_DIV2,	2, 1),
	DEF_FIXED(".s0_vc",	CLK_S0_VC,	CLK_PLL1_DIV2,	2, 1),
	DEF_FIXED(".s0_hsc",	CLK_S0_HSC,	CLK_PLL1_DIV2,	2, 1),
	DEF_FIXED(".sasyncper",	CLK_SASYNCPER,	CLK_PLL5_DIV4,	3, 1),

Annotation

Implementation Notes