1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // OWL pll clock driver 4 // 5 // Copyright (c) 2014 Actions Semi Inc. 6 // Author: David Liu <liuwei@actions-semi.com> 7 // 8 // Copyright (c) 2018 Linaro Ltd. 9 // Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> 10 11 #ifndef _OWL_PLL_H_ 12 #define _OWL_PLL_H_ 13 14 #include "owl-common.h" 15 16 /* last entry should have rate = 0 */ 17 struct clk_pll_table { 18 unsigned int val; 19 unsigned long rate; 20 }; 21 22 struct owl_pll_hw { 23 u32 reg; 24 u32 bfreq; 25 u8 bit_idx; 26 u8 shift; 27 u8 width; 28 u8 min_mul; 29 u8 max_mul; 30 const struct clk_pll_table *table; 31 }; 32 33 struct owl_pll { 34 struct owl_pll_hw pll_hw; 35 struct owl_clk_common common; 36 }; 37 38 #define OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ 39 _width, _min_mul, _max_mul, _table) \ 40 { \ 41 .reg = _reg, \ 42 .bfreq = _bfreq, \ 43 .bit_idx = _bit_idx, \ 44 .shift = _shift, \ 45 .width = _width, \ 46 .min_mul = _min_mul, \ 47 .max_mul = _max_mul, \ 48 .table = _table, \ 49 } 50 51 #define OWL_PLL(_struct, _name, _parent, _reg, _bfreq, _bit_idx, \ 52 _shift, _width, _min_mul, _max_mul, _table, _flags) \ 53 struct owl_pll _struct = { \ 54 .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ 55 _width, _min_mul, \ 56 _max_mul, _table), \ 57 .common = { \ 58 .regmap = NULL, \ 59 .hw.init = CLK_HW_INIT(_name, \ 60 _parent, \ 61 &owl_pll_ops, \ 62 _flags), \ 63 }, \ 64 } 65 66 #define OWL_PLL_NO_PARENT(_struct, _name, _reg, _bfreq, _bit_idx, \ 67 _shift, _width, _min_mul, _max_mul, _table, _flags) \ 68 struct owl_pll _struct = { \ 69 .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \ 70 _width, _min_mul, \ 71 _max_mul, _table), \ 72 .common = { \ 73 .regmap = NULL, \ 74 .hw.init = CLK_HW_INIT_NO_PARENT(_name, \ 75 &owl_pll_ops, \ 76 _flags), \ 77 }, \ 78 } 79 80 #define mul_mask(m) ((1 << ((m)->width)) - 1) 81 #define PLL_STABILITY_WAIT_US (50) 82 83 static inline struct owl_pll *hw_to_owl_pll(const struct clk_hw *hw) 84 { 85 struct owl_clk_common *common = hw_to_owl_clk_common(hw); 86 87 return container_of(common, struct owl_pll, common); 88 } 89 90 extern const struct clk_ops owl_pll_ops; 91 92 #endif /* _OWL_PLL_H_ */ 93