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![Weijie Gao](/assets/img/avatar_default.png)
The ethsys contains not only the clock gating controller, but also the reset controller for the whole ethernet subsystem and its components. This patch adds binding of the reset controller so that the ethernet node can have references on it. Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
197 lines
4.3 KiB
C
197 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 MediaTek Inc.
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* Author: Ryder Lee <ryder.lee@mediatek.com>
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*/
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#ifndef __DRV_CLK_MTK_H
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#define __DRV_CLK_MTK_H
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#define CLK_XTAL 0
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#define MHZ (1000 * 1000)
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#define HAVE_RST_BAR BIT(0)
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#define CLK_DOMAIN_SCPSYS BIT(0)
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#define CLK_GATE_SETCLR BIT(0)
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#define CLK_GATE_SETCLR_INV BIT(1)
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#define CLK_GATE_NO_SETCLR BIT(2)
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#define CLK_GATE_NO_SETCLR_INV BIT(3)
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#define CLK_GATE_MASK GENMASK(3, 0)
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#define CLK_PARENT_APMIXED BIT(4)
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#define CLK_PARENT_TOPCKGEN BIT(5)
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#define CLK_PARENT_MASK GENMASK(5, 4)
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#define ETHSYS_RST_CTRL_OFS 0x34
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/* struct mtk_pll_data - hardware-specific PLLs data */
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struct mtk_pll_data {
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const int id;
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u32 reg;
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u32 pwr_reg;
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u32 en_mask;
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u32 pd_reg;
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int pd_shift;
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u32 flags;
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u32 rst_bar_mask;
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u64 fmax;
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int pcwbits;
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u32 pcw_reg;
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int pcw_shift;
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};
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/**
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* struct mtk_fixed_clk - fixed clocks
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*
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* @id: index of clocks
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* @parent: index of parnet clocks
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* @rate: fixed rate
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*/
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struct mtk_fixed_clk {
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const int id;
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const int parent;
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unsigned long rate;
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};
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#define FIXED_CLK(_id, _parent, _rate) { \
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.id = _id, \
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.parent = _parent, \
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.rate = _rate, \
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}
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/**
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* struct mtk_fixed_factor - fixed multiplier and divider clocks
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*
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* @id: index of clocks
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* @parent: index of parnet clocks
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* @mult: multiplier
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* @div: divider
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* @flag: hardware-specific flags
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*/
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struct mtk_fixed_factor {
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const int id;
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const int parent;
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u32 mult;
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u32 div;
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u32 flags;
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};
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#define FACTOR(_id, _parent, _mult, _div, _flags) { \
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.id = _id, \
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.parent = _parent, \
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.mult = _mult, \
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.div = _div, \
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.flags = _flags, \
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}
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/**
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* struct mtk_composite - aggregate clock of mux, divider and gate clocks
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*
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* @id: index of clocks
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* @parent: index of parnet clocks
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* @mux_reg: hardware-specific mux register
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* @gate_reg: hardware-specific gate register
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* @mux_mask: mask to the mux bit field
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* @mux_shift: shift to the mux bit field
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* @gate_shift: shift to the gate bit field
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* @num_parents: number of parent clocks
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* @flags: hardware-specific flags
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*/
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struct mtk_composite {
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const int id;
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const int *parent;
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u32 mux_reg;
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u32 gate_reg;
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u32 mux_mask;
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signed char mux_shift;
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signed char gate_shift;
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signed char num_parents;
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u16 flags;
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};
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#define MUX_GATE_FLAGS(_id, _parents, _reg, _shift, _width, _gate, \
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_flags) { \
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.id = _id, \
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.mux_reg = _reg, \
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.mux_shift = _shift, \
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.mux_mask = BIT(_width) - 1, \
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.gate_reg = _reg, \
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.gate_shift = _gate, \
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.parent = _parents, \
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.num_parents = ARRAY_SIZE(_parents), \
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.flags = _flags, \
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}
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#define MUX_GATE(_id, _parents, _reg, _shift, _width, _gate) \
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MUX_GATE_FLAGS(_id, _parents, _reg, _shift, _width, _gate, 0)
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#define MUX(_id, _parents, _reg, _shift, _width) { \
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.id = _id, \
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.mux_reg = _reg, \
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.mux_shift = _shift, \
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.mux_mask = BIT(_width) - 1, \
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.gate_shift = -1, \
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.parent = _parents, \
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.num_parents = ARRAY_SIZE(_parents), \
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.flags = 0, \
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}
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struct mtk_gate_regs {
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u32 sta_ofs;
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u32 clr_ofs;
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u32 set_ofs;
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};
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/**
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* struct mtk_gate - gate clocks
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*
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* @id: index of gate clocks
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* @parent: index of parnet clocks
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* @regs: hardware-specific mux register
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* @shift: shift to the gate bit field
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* @flags: hardware-specific flags
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*/
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struct mtk_gate {
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const int id;
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const int parent;
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const struct mtk_gate_regs *regs;
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int shift;
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u32 flags;
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};
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/* struct mtk_clk_tree - clock tree */
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struct mtk_clk_tree {
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unsigned long xtal_rate;
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unsigned long xtal2_rate;
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const int fdivs_offs;
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const int muxes_offs;
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const struct mtk_pll_data *plls;
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const struct mtk_fixed_clk *fclks;
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const struct mtk_fixed_factor *fdivs;
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const struct mtk_composite *muxes;
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};
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struct mtk_clk_priv {
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void __iomem *base;
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const struct mtk_clk_tree *tree;
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};
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struct mtk_cg_priv {
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void __iomem *base;
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const struct mtk_clk_tree *tree;
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const struct mtk_gate *gates;
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};
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extern const struct clk_ops mtk_clk_apmixedsys_ops;
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extern const struct clk_ops mtk_clk_topckgen_ops;
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extern const struct clk_ops mtk_clk_gate_ops;
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int mtk_common_clk_init(struct udevice *dev,
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const struct mtk_clk_tree *tree);
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int mtk_common_clk_gate_init(struct udevice *dev,
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const struct mtk_clk_tree *tree,
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const struct mtk_gate *gates);
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#endif /* __DRV_CLK_MTK_H */
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