xref: /openbmc/linux/drivers/clk/imx/clk.h (revision c900529f3d9161bfde5cca0754f83b4d3c3e0220)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MACH_IMX_CLK_H
#define __MACH_IMX_CLK_H

#include <linux/bits.h>
#include <linux/spinlock.h>
#include <linux/clk-provider.h>

extern spinlock_t imx_ccm_lock;
extern bool mcore_booted;

void imx_check_clocks(struct clk *clks[], unsigned int count);
void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count);
#ifndef MODULE
void imx_register_uart_clocks(void);
#else
static inline void imx_register_uart_clocks(void)
{
}
#endif
void imx_mmdc_mask_handshake(void __iomem *ccm_base, unsigned int chn);
void imx_unregister_hw_clocks(struct clk_hw *hws[], unsigned int count);

extern void imx_cscmr1_fixup(u32 *val);

enum imx_pllv1_type {
	IMX_PLLV1_IMX1,
	IMX_PLLV1_IMX21,
	IMX_PLLV1_IMX25,
	IMX_PLLV1_IMX27,
	IMX_PLLV1_IMX31,
	IMX_PLLV1_IMX35,
};

enum imx_sscg_pll_type {
	SCCG_PLL1,
	SCCG_PLL2,
};

enum imx_pll14xx_type {
	PLL_1416X,
	PLL_1443X,
};

enum imx_pllv4_type {
	IMX_PLLV4_IMX7ULP,
	IMX_PLLV4_IMX8ULP,
	IMX_PLLV4_IMX8ULP_1GHZ,
};

enum imx_pfdv2_type {
	IMX_PFDV2_IMX7ULP,
	IMX_PFDV2_IMX8ULP,
};

/* NOTE: Rate table should be kept sorted in descending order. */
struct imx_pll14xx_rate_table {
	unsigned int rate;
	unsigned int pdiv;
	unsigned int mdiv;
	unsigned int sdiv;
	unsigned int kdiv;
};

struct imx_pll14xx_clk {
	enum imx_pll14xx_type type;
	const struct imx_pll14xx_rate_table *rate_table;
	int rate_count;
	int flags;
};

extern struct imx_pll14xx_clk imx_1416x_pll;
extern struct imx_pll14xx_clk imx_1443x_pll;
extern struct imx_pll14xx_clk imx_1443x_dram_pll;

#define CLK_FRACN_GPPLL_INTEGER	BIT(0)
#define CLK_FRACN_GPPLL_FRACN	BIT(1)

/* NOTE: Rate table should be kept sorted in descending order. */
struct imx_fracn_gppll_rate_table {
	unsigned int rate;
	unsigned int mfi;
	unsigned int mfn;
	unsigned int mfd;
	unsigned int rdiv;
	unsigned int odiv;
};

struct imx_fracn_gppll_clk {
	const struct imx_fracn_gppll_rate_table *rate_table;
	int rate_count;
	int flags;
};

struct clk_hw *imx_clk_fracn_gppll(const char *name, const char *parent_name, void __iomem *base,
				   const struct imx_fracn_gppll_clk *pll_clk);
struct clk_hw *imx_clk_fracn_gppll_integer(const char *name, const char *parent_name,
					   void __iomem *base,
					   const struct imx_fracn_gppll_clk *pll_clk);

extern struct imx_fracn_gppll_clk imx_fracn_gppll;
extern struct imx_fracn_gppll_clk imx_fracn_gppll_integer;

#define imx_clk_cpu(name, parent_name, div, mux, pll, step) \
	to_clk(imx_clk_hw_cpu(name, parent_name, div, mux, pll, step))

#define clk_register_gate2(dev, name, parent_name, flags, reg, bit_idx, \
				cgr_val, cgr_mask, clk_gate_flags, lock, share_count) \
	to_clk(clk_hw_register_gate2(dev, name, parent_name, flags, reg, bit_idx, \
				cgr_val, cgr_mask, clk_gate_flags, lock, share_count))

#define imx_clk_pllv3(type, name, parent_name, base, div_mask) \
	to_clk(imx_clk_hw_pllv3(type, name, parent_name, base, div_mask))

#define imx_clk_pfd(name, parent_name, reg, idx) \
	to_clk(imx_clk_hw_pfd(name, parent_name, reg, idx))

#define imx_clk_gate_exclusive(name, parent, reg, shift, exclusive_mask) \
	to_clk(imx_clk_hw_gate_exclusive(name, parent, reg, shift, exclusive_mask))

#define imx_clk_fixed(name, rate) \
	to_clk(imx_clk_hw_fixed(name, rate))

#define imx_clk_fixed_factor(name, parent, mult, div) \
	to_clk(imx_clk_hw_fixed_factor(name, parent, mult, div))

#define imx_clk_divider(name, parent, reg, shift, width) \
	to_clk(imx_clk_hw_divider(name, parent, reg, shift, width))

#define imx_clk_divider_flags(name, parent, reg, shift, width, flags) \
	to_clk(imx_clk_hw_divider_flags(name, parent, reg, shift, width, flags))

#define imx_clk_gate(name, parent, reg, shift) \
	to_clk(imx_clk_hw_gate(name, parent, reg, shift))

#define imx_clk_gate_dis(name, parent, reg, shift) \
	to_clk(imx_clk_hw_gate_dis(name, parent, reg, shift))

#define imx_clk_gate2(name, parent, reg, shift) \
	to_clk(imx_clk_hw_gate2(name, parent, reg, shift))

#define imx_clk_gate2_cgr(name, parent, reg, shift, cgr_val) \
	to_clk(__imx_clk_hw_gate2(name, parent, reg, shift, cgr_val, 0, NULL))

#define imx_clk_gate2_flags(name, parent, reg, shift, flags) \
	to_clk(imx_clk_hw_gate2_flags(name, parent, reg, shift, flags))

#define imx_clk_mux(name, reg, shift, width, parents, num_parents) \
	to_clk(imx_clk_hw_mux(name, reg, shift, width, parents, num_parents))

#define imx_clk_mux_flags(name, reg, shift, width, parents, num_parents, flags) \
	to_clk(imx_clk_hw_mux_flags(name, reg, shift, width, parents, num_parents, flags))

#define imx_clk_mux2_flags(name, reg, shift, width, parents, num_parents, flags) \
	to_clk(imx_clk_hw_mux2_flags(name, reg, shift, width, parents, num_parents, flags))

#define imx_clk_pllv1(type, name, parent, base) \
	to_clk(imx_clk_hw_pllv1(type, name, parent, base))

#define imx_clk_pllv2(name, parent, base) \
	to_clk(imx_clk_hw_pllv2(name, parent, base))

#define imx_clk_hw_gate(name, parent, reg, shift) \
	imx_clk_hw_gate_flags(name, parent, reg, shift, 0)

#define imx_clk_hw_gate2(name, parent, reg, shift) \
	imx_clk_hw_gate2_flags(name, parent, reg, shift, 0)

#define imx_clk_hw_gate_dis(name, parent, reg, shift) \
	imx_clk_hw_gate_dis_flags(name, parent, reg, shift, 0)

#define imx_clk_hw_gate_dis_flags(name, parent, reg, shift, flags) \
	__imx_clk_hw_gate(name, parent, reg, shift, flags, CLK_GATE_SET_TO_DISABLE)

#define imx_clk_hw_gate_flags(name, parent, reg, shift, flags) \
	__imx_clk_hw_gate(name, parent, reg, shift, flags, 0)

#define imx_clk_hw_gate2_flags(name, parent, reg, shift, flags) \
	__imx_clk_hw_gate2(name, parent, reg, shift, 0x3, flags, NULL)

#define imx_clk_hw_gate2_shared(name, parent, reg, shift, shared_count) \
	__imx_clk_hw_gate2(name, parent, reg, shift, 0x3, 0, shared_count)

#define imx_clk_hw_gate2_shared2(name, parent, reg, shift, shared_count) \
	__imx_clk_hw_gate2(name, parent, reg, shift, 0x3, CLK_OPS_PARENT_ENABLE, shared_count)

#define imx_clk_hw_gate3(name, parent, reg, shift) \
	imx_clk_hw_gate3_flags(name, parent, reg, shift, 0)

#define imx_clk_hw_gate3_flags(name, parent, reg, shift, flags) \
	__imx_clk_hw_gate(name, parent, reg, shift, flags | CLK_OPS_PARENT_ENABLE, 0)

#define imx_clk_hw_gate4(name, parent, reg, shift) \
	imx_clk_hw_gate4_flags(name, parent, reg, shift, 0)

#define imx_clk_hw_gate4_flags(name, parent, reg, shift, flags) \
	imx_clk_hw_gate2_flags(name, parent, reg, shift, flags | CLK_OPS_PARENT_ENABLE)

#define imx_clk_hw_mux2(name, reg, shift, width, parents, num_parents) \
	imx_clk_hw_mux2_flags(name, reg, shift, width, parents, num_parents, 0)

#define imx_clk_hw_mux(name, reg, shift, width, parents, num_parents) \
	__imx_clk_hw_mux(name, reg, shift, width, parents, num_parents, 0, 0)

#define imx_clk_hw_mux_flags(name, reg, shift, width, parents, num_parents, flags) \
	__imx_clk_hw_mux(name, reg, shift, width, parents, num_parents, flags, 0)

#define imx_clk_hw_mux_ldb(name, reg, shift, width, parents, num_parents) \
	__imx_clk_hw_mux(name, reg, shift, width, parents, num_parents, CLK_SET_RATE_PARENT, CLK_MUX_READ_ONLY)

#define imx_clk_hw_mux2_flags(name, reg, shift, width, parents, num_parents, flags) \
	__imx_clk_hw_mux(name, reg, shift, width, parents, num_parents, flags | CLK_OPS_PARENT_ENABLE, 0)

#define imx_clk_hw_divider(name, parent, reg, shift, width) \
	__imx_clk_hw_divider(name, parent, reg, shift, width, CLK_SET_RATE_PARENT)

#define imx_clk_hw_divider2(name, parent, reg, shift, width) \
	__imx_clk_hw_divider(name, parent, reg, shift, width, \
				CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE)

#define imx_clk_hw_divider_flags(name, parent, reg, shift, width, flags) \
	__imx_clk_hw_divider(name, parent, reg, shift, width, flags)

#define imx_clk_hw_pll14xx(name, parent_name, base, pll_clk) \
	imx_dev_clk_hw_pll14xx(NULL, name, parent_name, base, pll_clk)

struct clk_hw *imx_dev_clk_hw_pll14xx(struct device *dev, const char *name,
				const char *parent_name, void __iomem *base,
				const struct imx_pll14xx_clk *pll_clk);

struct clk_hw *imx_clk_hw_pllv1(enum imx_pllv1_type type, const char *name,
		const char *parent, void __iomem *base);

struct clk_hw *imx_clk_hw_pllv2(const char *name, const char *parent,
		void __iomem *base);

struct clk_hw *imx_clk_hw_frac_pll(const char *name, const char *parent_name,
			     void __iomem *base);

struct clk_hw *imx_clk_hw_sscg_pll(const char *name,
				const char * const *parent_names,
				u8 num_parents,
				u8 parent, u8 bypass1, u8 bypass2,
				void __iomem *base,
				unsigned long flags);

enum imx_pllv3_type {
	IMX_PLLV3_GENERIC,
	IMX_PLLV3_SYS,
	IMX_PLLV3_USB,
	IMX_PLLV3_USB_VF610,
	IMX_PLLV3_AV,
	IMX_PLLV3_ENET,
	IMX_PLLV3_ENET_IMX7,
	IMX_PLLV3_SYS_VF610,
	IMX_PLLV3_DDR_IMX7,
	IMX_PLLV3_AV_IMX7,
};

struct clk_hw *imx_clk_hw_pllv3(enum imx_pllv3_type type, const char *name,
		const char *parent_name, void __iomem *base, u32 div_mask);

#define PLL_1416X_RATE(_rate, _m, _p, _s)		\
	{						\
		.rate	=	(_rate),		\
		.mdiv	=	(_m),			\
		.pdiv	=	(_p),			\
		.sdiv	=	(_s),			\
	}

#define PLL_1443X_RATE(_rate, _m, _p, _s, _k)		\
	{						\
		.rate	=	(_rate),		\
		.mdiv	=	(_m),			\
		.pdiv	=	(_p),			\
		.sdiv	=	(_s),			\
		.kdiv	=	(_k),			\
	}

struct clk_hw *imx_clk_hw_pllv4(enum imx_pllv4_type type, const char *name,
		const char *parent_name, void __iomem *base);

struct clk_hw *clk_hw_register_gate2(struct device *dev, const char *name,
		const char *parent_name, unsigned long flags,
		void __iomem *reg, u8 bit_idx, u8 cgr_val, u8 cgr_mask,
		u8 clk_gate_flags, spinlock_t *lock,
		unsigned int *share_count);

struct clk * imx_obtain_fixed_clock(
			const char *name, unsigned long rate);

struct clk_hw *imx_obtain_fixed_clock_hw(
			const char *name, unsigned long rate);

struct clk_hw *imx_obtain_fixed_of_clock(struct device_node *np,
					 const char *name, unsigned long rate);

struct clk_hw *imx_get_clk_hw_by_name(struct device_node *np, const char *name);

struct clk_hw *imx_clk_hw_gate_exclusive(const char *name, const char *parent,
	 void __iomem *reg, u8 shift, u32 exclusive_mask);

struct clk_hw *imx_clk_hw_pfd(const char *name, const char *parent_name,
		void __iomem *reg, u8 idx);

struct clk_hw *imx_clk_hw_pfdv2(enum imx_pfdv2_type type, const char *name,
	 const char *parent_name, void __iomem *reg, u8 idx);

struct clk_hw *imx_clk_hw_busy_divider(const char *name, const char *parent_name,
				 void __iomem *reg, u8 shift, u8 width,
				 void __iomem *busy_reg, u8 busy_shift);

struct clk_hw *imx_clk_hw_busy_mux(const char *name, void __iomem *reg, u8 shift,
			     u8 width, void __iomem *busy_reg, u8 busy_shift,
			     const char * const *parent_names, int num_parents);

struct clk_hw *imx7ulp_clk_hw_composite(const char *name,
				     const char * const *parent_names,
				     int num_parents, bool mux_present,
				     bool rate_present, bool gate_present,
				     void __iomem *reg);

struct clk_hw *imx8ulp_clk_hw_composite(const char *name,
				     const char * const *parent_names,
				     int num_parents, bool mux_present,
				     bool rate_present, bool gate_present,
				     void __iomem *reg, bool has_swrst);

struct clk_hw *imx_clk_hw_fixup_divider(const char *name, const char *parent,
				  void __iomem *reg, u8 shift, u8 width,
				  void (*fixup)(u32 *val));

struct clk_hw *imx_clk_hw_fixup_mux(const char *name, void __iomem *reg,
			      u8 shift, u8 width, const char * const *parents,
			      int num_parents, void (*fixup)(u32 *val));

static inline struct clk *to_clk(struct clk_hw *hw)
{
	if (IS_ERR_OR_NULL(hw))
		return ERR_CAST(hw);
	return hw->clk;
}

static inline struct clk_hw *imx_clk_hw_fixed(const char *name, int rate)
{
	return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate);
}

static inline struct clk_hw *imx_clk_hw_fixed_factor(const char *name,
		const char *parent, unsigned int mult, unsigned int div)
{
	return clk_hw_register_fixed_factor(NULL, name, parent,
			CLK_SET_RATE_PARENT, mult, div);
}

static inline struct clk_hw *imx_clk_hw_divider_closest(const char *name,
						const char *parent,
						void __iomem *reg, u8 shift,
						u8 width)
{
	return clk_hw_register_divider(NULL, name, parent, 0,
				       reg, shift, width, CLK_DIVIDER_ROUND_CLOSEST, &imx_ccm_lock);
}

static inline struct clk_hw *__imx_clk_hw_divider(const char *name,
						   const char *parent,
						   void __iomem *reg, u8 shift,
						   u8 width, unsigned long flags)
{
	return clk_hw_register_divider(NULL, name, parent, flags,
				       reg, shift, width, 0, &imx_ccm_lock);
}

static inline struct clk_hw *__imx_clk_hw_gate(const char *name, const char *parent,
						void __iomem *reg, u8 shift,
						unsigned long flags,
						unsigned long clk_gate_flags)
{
	return clk_hw_register_gate(NULL, name, parent, flags | CLK_SET_RATE_PARENT, reg,
					shift, clk_gate_flags, &imx_ccm_lock);
}

static inline struct clk_hw *__imx_clk_hw_gate2(const char *name, const char *parent,
						void __iomem *reg, u8 shift, u8 cgr_val,
						unsigned long flags,
						unsigned int *share_count)
{
	return clk_hw_register_gate2(NULL, name, parent, flags | CLK_SET_RATE_PARENT, reg,
					shift, cgr_val, 0x3, 0, &imx_ccm_lock, share_count);
}

static inline struct clk_hw *__imx_clk_hw_mux(const char *name, void __iomem *reg,
			u8 shift, u8 width, const char * const *parents,
			int num_parents, unsigned long flags, unsigned long clk_mux_flags)
{
	return clk_hw_register_mux(NULL, name, parents, num_parents,
			flags | CLK_SET_RATE_NO_REPARENT, reg, shift,
			width, clk_mux_flags, &imx_ccm_lock);
}

struct clk_hw *imx_clk_hw_cpu(const char *name, const char *parent_name,
		struct clk *div, struct clk *mux, struct clk *pll,
		struct clk *step);

#define IMX_COMPOSITE_CORE		BIT(0)
#define IMX_COMPOSITE_BUS		BIT(1)
#define IMX_COMPOSITE_FW_MANAGED	BIT(2)

#define IMX_COMPOSITE_CLK_FLAGS_DEFAULT \
	(CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
#define IMX_COMPOSITE_CLK_FLAGS_CRITICAL \
	(IMX_COMPOSITE_CLK_FLAGS_DEFAULT | CLK_IS_CRITICAL)
#define IMX_COMPOSITE_CLK_FLAGS_GET_RATE_NO_CACHE \
	(IMX_COMPOSITE_CLK_FLAGS_DEFAULT | CLK_GET_RATE_NOCACHE)
#define IMX_COMPOSITE_CLK_FLAGS_CRITICAL_GET_RATE_NO_CACHE \
	(IMX_COMPOSITE_CLK_FLAGS_GET_RATE_NO_CACHE | CLK_IS_CRITICAL)

struct clk_hw *__imx8m_clk_hw_composite(const char *name,
					    const char * const *parent_names,
					    int num_parents,
					    void __iomem *reg,
					    u32 composite_flags,
					    unsigned long flags);

#define _imx8m_clk_hw_composite(name, parent_names, reg, composite_flags, flags) \
	__imx8m_clk_hw_composite(name, parent_names, \
		ARRAY_SIZE(parent_names), reg, composite_flags, flags)

#define imx8m_clk_hw_composite(name, parent_names, reg) \
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			0, IMX_COMPOSITE_CLK_FLAGS_DEFAULT)

#define imx8m_clk_hw_composite_flags(name, parent_names, reg, flags) \
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			0, IMX_COMPOSITE_CLK_FLAGS_DEFAULT |  flags)

#define imx8m_clk_hw_composite_critical(name, parent_names, reg) \
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			0, IMX_COMPOSITE_CLK_FLAGS_CRITICAL)

#define imx8m_clk_hw_composite_bus(name, parent_names, reg)	\
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			IMX_COMPOSITE_BUS, IMX_COMPOSITE_CLK_FLAGS_DEFAULT)

#define imx8m_clk_hw_composite_bus_critical(name, parent_names, reg)	\
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			IMX_COMPOSITE_BUS, IMX_COMPOSITE_CLK_FLAGS_CRITICAL)

#define imx8m_clk_hw_composite_core(name, parent_names, reg)	\
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			IMX_COMPOSITE_CORE, IMX_COMPOSITE_CLK_FLAGS_DEFAULT)

#define imx8m_clk_hw_fw_managed_composite(name, parent_names, reg) \
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			IMX_COMPOSITE_FW_MANAGED, \
			IMX_COMPOSITE_CLK_FLAGS_GET_RATE_NO_CACHE)

#define imx8m_clk_hw_fw_managed_composite_critical(name, parent_names, reg) \
	_imx8m_clk_hw_composite(name, parent_names, reg, \
			IMX_COMPOSITE_FW_MANAGED, \
			IMX_COMPOSITE_CLK_FLAGS_CRITICAL_GET_RATE_NO_CACHE)

struct clk_hw *imx93_clk_composite_flags(const char *name,
					 const char * const *parent_names,
					 int num_parents,
					 void __iomem *reg,
					 u32 domain_id,
					 unsigned long flags);
#define imx93_clk_composite(name, parent_names, num_parents, reg, domain_id) \
	imx93_clk_composite_flags(name, parent_names, num_parents, reg, domain_id \
				  CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)

struct clk_hw *imx93_clk_gate(struct device *dev, const char *name, const char *parent_name,
			      unsigned long flags, void __iomem *reg, u32 bit_idx, u32 val,
			      u32 mask, u32 domain_id, unsigned int *share_count);

struct clk_hw *imx_clk_hw_divider_gate(const char *name, const char *parent_name,
		unsigned long flags, void __iomem *reg, u8 shift, u8 width,
		u8 clk_divider_flags, const struct clk_div_table *table,
		spinlock_t *lock);

struct clk_hw *imx_clk_gpr_mux(const char *name, const char *compatible,
			       u32 reg, const char **parent_names,
			       u8 num_parents, const u32 *mux_table, u32 mask);

#endif