1 /* arch/arm/plat-s5p/include/plat/pll.h
3 * Copyright (c) 2009 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
8 * Based on arch/arm/plat-s3c64xx/include/plat/pll.h
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #define PLL45XX_MDIV_MASK (0x3FF)
16 #define PLL45XX_PDIV_MASK (0x3F)
17 #define PLL45XX_SDIV_MASK (0x7)
18 #define PLL45XX_MDIV_SHIFT (16)
19 #define PLL45XX_PDIV_SHIFT (8)
20 #define PLL45XX_SDIV_SHIFT (0)
22 #include <asm/div64.h>
30 static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con,
31 enum pll45xx_type_t pll_type)
36 mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK;
37 pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK;
38 sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK;
40 if (pll_type == pll_4508)
44 do_div(fvco, (pdiv << sdiv));
46 return (unsigned long)fvco;
49 #define PLL46XX_KDIV_MASK (0xFFFF)
50 #define PLL46XX_MDIV_MASK (0x1FF)
51 #define PLL46XX_PDIV_MASK (0x3F)
52 #define PLL46XX_SDIV_MASK (0x7)
53 #define PLL46XX_MDIV_SHIFT (16)
54 #define PLL46XX_PDIV_SHIFT (8)
55 #define PLL46XX_SDIV_SHIFT (0)
62 static inline unsigned long s5p_get_pll46xx(unsigned long baseclk,
63 u32 pll_con0, u32 pll_con1,
64 enum pll46xx_type_t pll_type)
67 u32 mdiv, pdiv, sdiv, kdiv;
70 mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK;
71 pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK;
72 sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK;
73 kdiv = pll_con1 & PLL46XX_KDIV_MASK;
77 if (pll_type == pll_4600) {
78 tmp *= (mdiv << 16) + kdiv;
79 do_div(tmp, (pdiv << sdiv));
82 tmp *= (mdiv << 10) + kdiv;
83 do_div(tmp, (pdiv << sdiv));
90 #define PLL90XX_MDIV_MASK (0xFF)
91 #define PLL90XX_PDIV_MASK (0x3F)
92 #define PLL90XX_SDIV_MASK (0x7)
93 #define PLL90XX_KDIV_MASK (0xffff)
94 #define PLL90XX_MDIV_SHIFT (16)
95 #define PLL90XX_PDIV_SHIFT (8)
96 #define PLL90XX_SDIV_SHIFT (0)
97 #define PLL90XX_KDIV_SHIFT (0)
99 static inline unsigned long s5p_get_pll90xx(unsigned long baseclk,
100 u32 pll_con, u32 pll_conk)
102 unsigned long result;
103 u32 mdiv, pdiv, sdiv, kdiv;
106 mdiv = (pll_con >> PLL90XX_MDIV_SHIFT) & PLL90XX_MDIV_MASK;
107 pdiv = (pll_con >> PLL90XX_PDIV_SHIFT) & PLL90XX_PDIV_MASK;
108 sdiv = (pll_con >> PLL90XX_SDIV_SHIFT) & PLL90XX_SDIV_MASK;
109 kdiv = pll_conk & PLL90XX_KDIV_MASK;
111 /* We need to multiple baseclk by mdiv (the integer part) and kdiv
112 * which is in 2^16ths, so shift mdiv up (does not overflow) and
113 * add kdiv before multiplying. The use of tmp is to avoid any
114 * overflows before shifting bac down into result when multipling
115 * by the mdiv and kdiv pair.
119 tmp *= (mdiv << 16) + kdiv;
120 do_div(tmp, (pdiv << sdiv));
126 #define PLL65XX_MDIV_MASK (0x3FF)
127 #define PLL65XX_PDIV_MASK (0x3F)
128 #define PLL65XX_SDIV_MASK (0x7)
129 #define PLL65XX_MDIV_SHIFT (16)
130 #define PLL65XX_PDIV_SHIFT (8)
131 #define PLL65XX_SDIV_SHIFT (0)
133 static inline unsigned long s5p_get_pll65xx(unsigned long baseclk, u32 pll_con)
135 u32 mdiv, pdiv, sdiv;
138 mdiv = (pll_con >> PLL65XX_MDIV_SHIFT) & PLL65XX_MDIV_MASK;
139 pdiv = (pll_con >> PLL65XX_PDIV_SHIFT) & PLL65XX_PDIV_MASK;
140 sdiv = (pll_con >> PLL65XX_SDIV_SHIFT) & PLL65XX_SDIV_MASK;
143 do_div(fvco, (pdiv << sdiv));
145 return (unsigned long)fvco;