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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2021 SiFive, Inc.
* Wesley Terpstra
* Paul Walmsley
* Zong Li
* Pragnesh Patel
*/
#ifndef __SIFIVE_CLK_SIFIVE_PRCI_H
#define __SIFIVE_CLK_SIFIVE_PRCI_H
#include <clk.h>
#include <linux/clk/analogbits-wrpll-cln28hpc.h>
/*
* EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects:
* hfclk and rtcclk
*/
#define EXPECTED_CLK_PARENT_COUNT 2
/*
* Register offsets and bitmasks
*/
/* COREPLLCFG0 */
#define PRCI_COREPLLCFG0_OFFSET 0x4
#define PRCI_COREPLLCFG0_DIVR_SHIFT 0
#define PRCI_COREPLLCFG0_DIVR_MASK (0x3f << PRCI_COREPLLCFG0_DIVR_SHIFT)
#define PRCI_COREPLLCFG0_DIVF_SHIFT 6
#define PRCI_COREPLLCFG0_DIVF_MASK (0x1ff << PRCI_COREPLLCFG0_DIVF_SHIFT)
#define PRCI_COREPLLCFG0_DIVQ_SHIFT 15
#define PRCI_COREPLLCFG0_DIVQ_MASK (0x7 << PRCI_COREPLLCFG0_DIVQ_SHIFT)
#define PRCI_COREPLLCFG0_RANGE_SHIFT 18
#define PRCI_COREPLLCFG0_RANGE_MASK (0x7 << PRCI_COREPLLCFG0_RANGE_SHIFT)
#define PRCI_COREPLLCFG0_BYPASS_SHIFT 24
#define PRCI_COREPLLCFG0_BYPASS_MASK (0x1 << PRCI_COREPLLCFG0_BYPASS_SHIFT)
#define PRCI_COREPLLCFG0_FSE_SHIFT 25
#define PRCI_COREPLLCFG0_FSE_MASK (0x1 << PRCI_COREPLLCFG0_FSE_SHIFT)
#define PRCI_COREPLLCFG0_LOCK_SHIFT 31
#define PRCI_COREPLLCFG0_LOCK_MASK (0x1 << PRCI_COREPLLCFG0_LOCK_SHIFT)
/* COREPLLCFG1 */
#define PRCI_COREPLLCFG1_OFFSET 0x8
#define PRCI_COREPLLCFG1_CKE_SHIFT 31
#define PRCI_COREPLLCFG1_CKE_MASK (0x1 << PRCI_COREPLLCFG1_CKE_SHIFT)
/* DDRPLLCFG0 */
#define PRCI_DDRPLLCFG0_OFFSET 0xc
#define PRCI_DDRPLLCFG0_DIVR_SHIFT 0
#define PRCI_DDRPLLCFG0_DIVR_MASK (0x3f << PRCI_DDRPLLCFG0_DIVR_SHIFT)
#define PRCI_DDRPLLCFG0_DIVF_SHIFT 6
#define PRCI_DDRPLLCFG0_DIVF_MASK (0x1ff << PRCI_DDRPLLCFG0_DIVF_SHIFT)
#define PRCI_DDRPLLCFG0_DIVQ_SHIFT 15
#define PRCI_DDRPLLCFG0_DIVQ_MASK (0x7 << PRCI_DDRPLLCFG0_DIVQ_SHIFT)
#define PRCI_DDRPLLCFG0_RANGE_SHIFT 18
#define PRCI_DDRPLLCFG0_RANGE_MASK (0x7 << PRCI_DDRPLLCFG0_RANGE_SHIFT)
#define PRCI_DDRPLLCFG0_BYPASS_SHIFT 24
#define PRCI_DDRPLLCFG0_BYPASS_MASK (0x1 << PRCI_DDRPLLCFG0_BYPASS_SHIFT)
#define PRCI_DDRPLLCFG0_FSE_SHIFT 25
#define PRCI_DDRPLLCFG0_FSE_MASK (0x1 << PRCI_DDRPLLCFG0_FSE_SHIFT)
#define PRCI_DDRPLLCFG0_LOCK_SHIFT 31
#define PRCI_DDRPLLCFG0_LOCK_MASK (0x1 << PRCI_DDRPLLCFG0_LOCK_SHIFT)
/* DDRPLLCFG1 */
#define PRCI_DDRPLLCFG1_OFFSET 0x10
#define PRCI_DDRPLLCFG1_CKE_SHIFT 31
#define PRCI_DDRPLLCFG1_CKE_MASK (0x1 << PRCI_DDRPLLCFG1_CKE_SHIFT)
/* PCIEAUXCFG1 */
#define PRCI_PCIEAUXCFG1_OFFSET 0x14
#define PRCI_PCIEAUXCFG1_SHIFT 0
#define PRCI_PCIEAUXCFG1_MASK (0x1 << PRCI_PCIEAUXCFG1_SHIFT)
/* GEMGXLPLLCFG0 */
#define PRCI_GEMGXLPLLCFG0_OFFSET 0x1c
#define PRCI_GEMGXLPLLCFG0_DIVR_SHIFT 0
#define PRCI_GEMGXLPLLCFG0_DIVR_MASK \
(0x3f << PRCI_GEMGXLPLLCFG0_DIVR_SHIFT)
#define PRCI_GEMGXLPLLCFG0_DIVF_SHIFT 6
#define PRCI_GEMGXLPLLCFG0_DIVF_MASK \
(0x1ff << PRCI_GEMGXLPLLCFG0_DIVF_SHIFT)
#define PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT 15
#define PRCI_GEMGXLPLLCFG0_DIVQ_MASK (0x7 << PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT)
#define PRCI_GEMGXLPLLCFG0_RANGE_SHIFT 18
#define PRCI_GEMGXLPLLCFG0_RANGE_MASK \
(0x7 << PRCI_GEMGXLPLLCFG0_RANGE_SHIFT)
#define PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT 24
#define PRCI_GEMGXLPLLCFG0_BYPASS_MASK \
(0x1 << PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT)
#define PRCI_GEMGXLPLLCFG0_FSE_SHIFT 25
#define PRCI_GEMGXLPLLCFG0_FSE_MASK \
(0x1 << PRCI_GEMGXLPLLCFG0_FSE_SHIFT)
#define PRCI_GEMGXLPLLCFG0_LOCK_SHIFT 31
#define PRCI_GEMGXLPLLCFG0_LOCK_MASK (0x1 << PRCI_GEMGXLPLLCFG0_LOCK_SHIFT)
/* GEMGXLPLLCFG1 */
#define PRCI_GEMGXLPLLCFG1_OFFSET 0x20
#define PRCI_GEMGXLPLLCFG1_CKE_SHIFT 31
#define PRCI_GEMGXLPLLCFG1_CKE_MASK (0x1 << PRCI_GEMGXLPLLCFG1_CKE_SHIFT)
/* CORECLKSEL */
#define PRCI_CORECLKSEL_OFFSET 0x24
#define PRCI_CORECLKSEL_CORECLKSEL_SHIFT 0
#define PRCI_CORECLKSEL_CORECLKSEL_MASK \
(0x1 << PRCI_CORECLKSEL_CORECLKSEL_SHIFT)
/* DEVICESRESETREG */
#define PRCI_DEVICESRESETREG_OFFSET 0x28
#define PRCI_DEVICERESETCNT 6
/* CLKMUXSTATUSREG */
#define PRCI_CLKMUXSTATUSREG_OFFSET 0x2c
#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT 1
#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK \
(0x1 << PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT)
/* CLTXPLLCFG0 */
#define PRCI_CLTXPLLCFG0_OFFSET 0x30
#define PRCI_CLTXPLLCFG0_DIVR_SHIFT 0
#define PRCI_CLTXPLLCFG0_DIVR_MASK (0x3f << PRCI_CLTXPLLCFG0_DIVR_SHIFT)
#define PRCI_CLTXPLLCFG0_DIVF_SHIFT 6
#define PRCI_CLTXPLLCFG0_DIVF_MASK (0x1ff << PRCI_CLTXPLLCFG0_DIVF_SHIFT)
#define PRCI_CLTXPLLCFG0_DIVQ_SHIFT 15
#define PRCI_CLTXPLLCFG0_DIVQ_MASK (0x7 << PRCI_CLTXPLLCFG0_DIVQ_SHIFT)
#define PRCI_CLTXPLLCFG0_RANGE_SHIFT 18
#define PRCI_CLTXPLLCFG0_RANGE_MASK (0x7 << PRCI_CLTXPLLCFG0_RANGE_SHIFT)
#define PRCI_CLTXPLLCFG0_BYPASS_SHIFT 24
#define PRCI_CLTXPLLCFG0_BYPASS_MASK (0x1 << PRCI_CLTXPLLCFG0_BYPASS_SHIFT)
#define PRCI_CLTXPLLCFG0_FSE_SHIFT 25
#define PRCI_CLTXPLLCFG0_FSE_MASK (0x1 << PRCI_CLTXPLLCFG0_FSE_SHIFT)
#define PRCI_CLTXPLLCFG0_LOCK_SHIFT 31
#define PRCI_CLTXPLLCFG0_LOCK_MASK (0x1 << PRCI_CLTXPLLCFG0_LOCK_SHIFT)
/* CLTXPLLCFG1 */
#define PRCI_CLTXPLLCFG1_OFFSET 0x34
#define PRCI_CLTXPLLCFG1_CKE_SHIFT 24
#define PRCI_CLTXPLLCFG1_CKE_MASK (0x1 << PRCI_CLTXPLLCFG1_CKE_SHIFT)
/* DVFSCOREPLLCFG0 */
#define PRCI_DVFSCOREPLLCFG0_OFFSET 0x38
/* DVFSCOREPLLCFG1 */
#define PRCI_DVFSCOREPLLCFG1_OFFSET 0x3c
#define PRCI_DVFSCOREPLLCFG1_CKE_SHIFT 24
#define PRCI_DVFSCOREPLLCFG1_CKE_MASK (0x1 << PRCI_DVFSCOREPLLCFG1_CKE_SHIFT)
/* COREPLLSEL */
#define PRCI_COREPLLSEL_OFFSET 0x40
#define PRCI_COREPLLSEL_COREPLLSEL_SHIFT 0
#define PRCI_COREPLLSEL_COREPLLSEL_MASK \
(0x1 << PRCI_COREPLLSEL_COREPLLSEL_SHIFT)
/* HFPCLKPLLCFG0 */
#define PRCI_HFPCLKPLLCFG0_OFFSET 0x50
#define PRCI_HFPCLKPLL_CFG0_DIVR_SHIFT 0
#define PRCI_HFPCLKPLL_CFG0_DIVR_MASK \
(0x3f << PRCI_HFPCLKPLLCFG0_DIVR_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_DIVF_SHIFT 6
#define PRCI_HFPCLKPLL_CFG0_DIVF_MASK \
(0x1ff << PRCI_HFPCLKPLLCFG0_DIVF_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_DIVQ_SHIFT 15
#define PRCI_HFPCLKPLL_CFG0_DIVQ_MASK \
(0x7 << PRCI_HFPCLKPLLCFG0_DIVQ_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_RANGE_SHIFT 18
#define PRCI_HFPCLKPLL_CFG0_RANGE_MASK \
(0x7 << PRCI_HFPCLKPLLCFG0_RANGE_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_BYPASS_SHIFT 24
#define PRCI_HFPCLKPLL_CFG0_BYPASS_MASK \
(0x1 << PRCI_HFPCLKPLLCFG0_BYPASS_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_FSE_SHIFT 25
#define PRCI_HFPCLKPLL_CFG0_FSE_MASK \
(0x1 << PRCI_HFPCLKPLLCFG0_FSE_SHIFT)
#define PRCI_HFPCLKPLL_CFG0_LOCK_SHIFT 31
#define PRCI_HFPCLKPLL_CFG0_LOCK_MASK \
(0x1 << PRCI_HFPCLKPLLCFG0_LOCK_SHIFT)
/* HFPCLKPLLCFG1 */
#define PRCI_HFPCLKPLLCFG1_OFFSET 0x54
#define PRCI_HFPCLKPLLCFG1_CKE_SHIFT 24
#define PRCI_HFPCLKPLLCFG1_CKE_MASK \
(0x1 << PRCI_HFPCLKPLLCFG1_CKE_SHIFT)
/* HFPCLKPLLSEL */
#define PRCI_HFPCLKPLLSEL_OFFSET 0x58
#define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT 0
#define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_MASK \
(0x1 << PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT)
/* HFPCLKPLLDIV */
#define PRCI_HFPCLKPLLDIV_OFFSET 0x5c
/* PRCIPLL */
#define PRCI_PRCIPLL_OFFSET 0xe0
#define PRCI_PRCIPLL_CLTXPLL (0x1 << 0)
#define PRCI_PRCIPLL_GEMGXLPLL (0x1 << 1)
#define PRCI_PRCIPLL_DDRPLL (0x1 << 2)
#define PRCI_PRCIPLL_HFPCLKPLL (0x1 << 3)
#define PRCI_PRCIPLL_DVFSCOREPLL (0x1 << 4)
#define PRCI_PRCIPLL_COREPLL (0x1 << 5)
/* PROCMONCFG */
#define PRCI_PROCMONCFG_OFFSET 0xF0
#define PRCI_PROCMONCFG_CORE_CLOCK_SHIFT 24
#define PRCI_PROCMONCFG_CORE_CLOCK_MASK \
(0x1 << PRCI_PROCMONCFG_CORE_CLOCK_SHIFT)
/*
* Private structures
*/
/**
* struct __prci_data - per-device-instance data
* @va: base virtual address of the PRCI IP block
* @parent: parent clk instance
*
* PRCI per-device instance data
*/
struct __prci_data {
void *va;
struct clk parent_hfclk;
struct clk parent_rtcclk;
};
/**
* struct __prci_wrpll_data - WRPLL configuration and integration data
* @c: WRPLL current configuration record
* @enable_bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL)
* @disable_bypass: fn ptr to code to not bypass the WRPLL (or NULL)
* @cfg0_offs: WRPLL CFG0 register offset (in bytes) from the PRCI base address
* @cfg1_offs: WRPLL CFG1 register offset (in bytes) from the PRCI base address
* @release_reset: fn ptr to code to release clock reset
*
* @enable_bypass and @disable_bypass are used for WRPLL instances
* that contain a separate external glitchless clock mux downstream
* from the PLL. The WRPLL internal bypass mux is not glitchless.
*/
struct __prci_wrpll_data {
struct wrpll_cfg c;
void (*enable_bypass)(struct __prci_data *pd);
void (*disable_bypass)(struct __prci_data *pd);
u8 cfg0_offs;
u8 cfg1_offs;
void (*release_reset)(struct __prci_data *pd);
};
/**
* struct __prci_clock - describes a clock device managed by PRCI
* @name: user-readable clock name string - should match the manual
* @parent_name: parent name for this clock
* @ops: struct __prci_clock_ops for control
* @pwd: WRPLL-specific data, associated with this clock (if not NULL)
* @pd: PRCI-specific data associated with this clock (if not NULL)
*
* PRCI clock data. Used by the PRCI driver to register PRCI-provided
* clocks to the Linux clock infrastructure.
*/
struct __prci_clock {
const char *name;
const char *parent_name;
const struct __prci_clock_ops *ops;
struct __prci_wrpll_data *pwd;
struct __prci_data *pd;
};
/* struct __prci_clock_ops - clock operations */
struct __prci_clock_ops {
int (*set_rate)(struct __prci_clock *pc,
unsigned long rate,
unsigned long parent_rate);
unsigned long (*round_rate)(struct __prci_clock *pc,
unsigned long rate,
unsigned long *parent_rate);
unsigned long (*recalc_rate)(struct __prci_clock *pc,
unsigned long parent_rate);
int (*enable_clk)(struct __prci_clock *pc, bool enable);
};
/*
* struct prci_clk_desc - describes the information of clocks of each SoCs
* @clks: point to a array of __prci_clock
* @num_clks: the number of element of clks
*/
struct prci_clk_desc {
struct __prci_clock *clks;
size_t num_clks;
};
void sifive_prci_ethernet_release_reset(struct __prci_data *pd);
void sifive_prci_ddr_release_reset(struct __prci_data *pd);
void sifive_prci_cltx_release_reset(struct __prci_data *pd);
/* Core clock mux control */
void sifive_prci_coreclksel_use_hfclk(struct __prci_data *pd);
void sifive_prci_coreclksel_use_corepll(struct __prci_data *pd);
void sifive_prci_coreclksel_use_final_corepll(struct __prci_data *pd);
void sifive_prci_corepllsel_use_dvfscorepll(struct __prci_data *pd);
void sifive_prci_corepllsel_use_corepll(struct __prci_data *pd);
void sifive_prci_hfpclkpllsel_use_hfclk(struct __prci_data *pd);
void sifive_prci_hfpclkpllsel_use_hfpclkpll(struct __prci_data *pd);
unsigned long sifive_prci_wrpll_round_rate(struct __prci_clock *pc,
unsigned long rate,
unsigned long *parent_rate);
/* Linux clock framework integration */
int sifive_prci_wrpll_set_rate(struct __prci_clock *pc,
unsigned long rate,
unsigned long parent_rate);
unsigned long sifive_prci_wrpll_recalc_rate(struct __prci_clock *pc,
unsigned long parent_rate);
unsigned long sifive_prci_tlclksel_recalc_rate(struct __prci_clock *pc,
unsigned long parent_rate);
unsigned long sifive_prci_hfpclkplldiv_recalc_rate(struct __prci_clock *pc,
unsigned long parent_rate);
int sifive_prci_clock_enable(struct __prci_clock *pc, bool enable);
#endif /* __SIFIVE_CLK_SIFIVE_PRCI_H */
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