1 /* linux/include/asm/arch-s3c2410/regs-clock.h
3 * Copyright (c) 2003,2004,2005 Simtec Electronics <linux@simtec.co.uk>
4 * http://armlinux.simtec.co.uk/
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * S3C2410 clock register definitions
13 * 18-Aug-2004 Ben Dooks Added 2440 definitions
14 * 08-Aug-2004 Herbert Pƶtzl Added CLKCON definitions
15 * 19-06-2003 Ben Dooks Created file
16 * 12-03-2004 Ben Dooks Updated include protection
17 * 29-Sep-2004 Ben Dooks Fixed usage for assembly inclusion
18 * 10-Feb-2005 Ben Dooks Fixed CAMDIVN address (Guillaume Gourat)
19 * 10-Mar-2005 Lucas Villa Real Changed S3C2410_VA to S3C24XX_VA
20 * 27-Aug-2005 Ben Dooks Add clock-slow info
21 * 20-Oct-2005 Ben Dooks Fixed overflow in PLL (Guillaume Gourat)
22 * 20-Oct-2005 Ben Dooks Add masks for DCLK (Guillaume Gourat)
25 #ifndef __ASM_ARM_REGS_CLOCK
26 #define __ASM_ARM_REGS_CLOCK "$Id: clock.h,v 1.4 2003/04/30 14:50:51 ben Exp $"
28 #define S3C2410_CLKREG(x) ((x) + S3C24XX_VA_CLKPWR)
30 #define S3C2410_PLLVAL(_m,_p,_s) ((_m) << 12 | ((_p) << 4) | ((_s)))
32 #define S3C2410_LOCKTIME S3C2410_CLKREG(0x00)
33 #define S3C2410_MPLLCON S3C2410_CLKREG(0x04)
34 #define S3C2410_UPLLCON S3C2410_CLKREG(0x08)
35 #define S3C2410_CLKCON S3C2410_CLKREG(0x0C)
36 #define S3C2410_CLKSLOW S3C2410_CLKREG(0x10)
37 #define S3C2410_CLKDIVN S3C2410_CLKREG(0x14)
39 #define S3C2410_CLKCON_IDLE (1<<2)
40 #define S3C2410_CLKCON_POWER (1<<3)
41 #define S3C2410_CLKCON_NAND (1<<4)
42 #define S3C2410_CLKCON_LCDC (1<<5)
43 #define S3C2410_CLKCON_USBH (1<<6)
44 #define S3C2410_CLKCON_USBD (1<<7)
45 #define S3C2410_CLKCON_PWMT (1<<8)
46 #define S3C2410_CLKCON_SDI (1<<9)
47 #define S3C2410_CLKCON_UART0 (1<<10)
48 #define S3C2410_CLKCON_UART1 (1<<11)
49 #define S3C2410_CLKCON_UART2 (1<<12)
50 #define S3C2410_CLKCON_GPIO (1<<13)
51 #define S3C2410_CLKCON_RTC (1<<14)
52 #define S3C2410_CLKCON_ADC (1<<15)
53 #define S3C2410_CLKCON_IIC (1<<16)
54 #define S3C2410_CLKCON_IIS (1<<17)
55 #define S3C2410_CLKCON_SPI (1<<18)
57 #define S3C2410_PLLCON_MDIVSHIFT 12
58 #define S3C2410_PLLCON_PDIVSHIFT 4
59 #define S3C2410_PLLCON_SDIVSHIFT 0
60 #define S3C2410_PLLCON_MDIVMASK ((1<<(1+(19-12)))-1)
61 #define S3C2410_PLLCON_PDIVMASK ((1<<5)-1)
62 #define S3C2410_PLLCON_SDIVMASK 3
64 /* DCLKCON register addresses in gpio.h */
66 #define S3C2410_DCLKCON_DCLK0EN (1<<0)
67 #define S3C2410_DCLKCON_DCLK0_PCLK (0<<1)
68 #define S3C2410_DCLKCON_DCLK0_UCLK (1<<1)
69 #define S3C2410_DCLKCON_DCLK0_DIV(x) (((x) - 1 )<<4)
70 #define S3C2410_DCLKCON_DCLK0_CMP(x) (((x) - 1 )<<8)
71 #define S3C2410_DCLKCON_DCLK0_DIV_MASK ((0xf)<<4)
72 #define S3C2410_DCLKCON_DCLK0_CMP_MASK ((0xf)<<8)
74 #define S3C2410_DCLKCON_DCLK1EN (1<<16)
75 #define S3C2410_DCLKCON_DCLK1_PCLK (0<<17)
76 #define S3C2410_DCLKCON_DCLK1_UCLK (1<<17)
77 #define S3C2410_DCLKCON_DCLK1_DIV(x) (((x) - 1) <<20)
78 #define S3C2410_DCLKCON_DCLK1_CMP(x) (((x) - 1) <<24)
79 #define S3C2410_DCLKCON_DCLK1_DIV_MASK ((0xf) <<20)
80 #define S3C2410_DCLKCON_DCLK1_CMP_MASK ((0xf) <<24)
82 #define S3C2410_CLKDIVN_PDIVN (1<<0)
83 #define S3C2410_CLKDIVN_HDIVN (1<<1)
85 #define S3C2410_CLKSLOW_UCLK_OFF (1<<7)
86 #define S3C2410_CLKSLOW_MPLL_OFF (1<<5)
87 #define S3C2410_CLKSLOW_SLOW (1<<4)
88 #define S3C2410_CLKSLOW_SLOWVAL(x) (x)
89 #define S3C2410_CLKSLOW_GET_SLOWVAL(x) ((x) & 7)
93 #include <asm/div64.h>
95 static inline unsigned int
96 s3c2410_get_pll(unsigned int pllval, unsigned int baseclk)
98 unsigned int mdiv, pdiv, sdiv;
101 mdiv = pllval >> S3C2410_PLLCON_MDIVSHIFT;
102 pdiv = pllval >> S3C2410_PLLCON_PDIVSHIFT;
103 sdiv = pllval >> S3C2410_PLLCON_SDIVSHIFT;
105 mdiv &= S3C2410_PLLCON_MDIVMASK;
106 pdiv &= S3C2410_PLLCON_PDIVMASK;
107 sdiv &= S3C2410_PLLCON_SDIVMASK;
109 fvco = (uint64_t)baseclk * (mdiv + 8);
110 do_div(fvco, (pdiv + 2) << sdiv);
112 return (unsigned int)fvco;
115 #endif /* __ASSEMBLY__ */
117 #ifdef CONFIG_CPU_S3C2440
119 /* extra registers */
120 #define S3C2440_CAMDIVN S3C2410_CLKREG(0x18)
122 #define S3C2440_CLKCON_CAMERA (1<<19)
123 #define S3C2440_CLKCON_AC97 (1<<20)
125 #define S3C2440_CLKDIVN_PDIVN (1<<0)
126 #define S3C2440_CLKDIVN_HDIVN_MASK (3<<1)
127 #define S3C2440_CLKDIVN_HDIVN_1 (0<<1)
128 #define S3C2440_CLKDIVN_HDIVN_2 (1<<1)
129 #define S3C2440_CLKDIVN_HDIVN_4_8 (2<<1)
130 #define S3C2440_CLKDIVN_HDIVN_3_6 (3<<1)
131 #define S3C2440_CLKDIVN_UCLK (1<<3)
133 #define S3C2440_CAMDIVN_CAMCLK_MASK (0xf<<0)
134 #define S3C2440_CAMDIVN_CAMCLK_SEL (1<<4)
135 #define S3C2440_CAMDIVN_HCLK3_HALF (1<<8)
136 #define S3C2440_CAMDIVN_HCLK4_HALF (1<<9)
137 #define S3C2440_CAMDIVN_DVSEN (1<<12)
139 #endif /* CONFIG_CPU_S3C2440 */
142 #endif /* __ASM_ARM_REGS_CLOCK */