736855f0c7
Patch from Ben Dooks Clock support for the clocks on the Samsung S3C2412 and S3C2413 SoCs. This provides clock enables and parent selection for all the standard clocks. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
205 lines
7 KiB
C
205 lines
7 KiB
C
/* linux/include/asm/arch-s3c2410/regs-clock.h
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*
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* Copyright (c) 2003,2004,2005,2006 Simtec Electronics <linux@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* S3C2410 clock register definitions
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*
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* Changelog:
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* 18-Aug-2004 Ben Dooks Added 2440 definitions
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* 08-Aug-2004 Herbert Pötzl Added CLKCON definitions
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* 19-06-2003 Ben Dooks Created file
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* 12-03-2004 Ben Dooks Updated include protection
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* 29-Sep-2004 Ben Dooks Fixed usage for assembly inclusion
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* 10-Feb-2005 Ben Dooks Fixed CAMDIVN address (Guillaume Gourat)
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* 10-Mar-2005 Lucas Villa Real Changed S3C2410_VA to S3C24XX_VA
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* 27-Aug-2005 Ben Dooks Add clock-slow info
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* 20-Oct-2005 Ben Dooks Fixed overflow in PLL (Guillaume Gourat)
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* 20-Oct-2005 Ben Dooks Add masks for DCLK (Guillaume Gourat)
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*/
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#ifndef __ASM_ARM_REGS_CLOCK
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#define __ASM_ARM_REGS_CLOCK "$Id: clock.h,v 1.4 2003/04/30 14:50:51 ben Exp $"
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#define S3C2410_CLKREG(x) ((x) + S3C24XX_VA_CLKPWR)
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#define S3C2410_PLLVAL(_m,_p,_s) ((_m) << 12 | ((_p) << 4) | ((_s)))
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#define S3C2410_LOCKTIME S3C2410_CLKREG(0x00)
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#define S3C2410_MPLLCON S3C2410_CLKREG(0x04)
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#define S3C2410_UPLLCON S3C2410_CLKREG(0x08)
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#define S3C2410_CLKCON S3C2410_CLKREG(0x0C)
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#define S3C2410_CLKSLOW S3C2410_CLKREG(0x10)
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#define S3C2410_CLKDIVN S3C2410_CLKREG(0x14)
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#define S3C2410_CLKCON_IDLE (1<<2)
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#define S3C2410_CLKCON_POWER (1<<3)
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#define S3C2410_CLKCON_NAND (1<<4)
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#define S3C2410_CLKCON_LCDC (1<<5)
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#define S3C2410_CLKCON_USBH (1<<6)
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#define S3C2410_CLKCON_USBD (1<<7)
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#define S3C2410_CLKCON_PWMT (1<<8)
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#define S3C2410_CLKCON_SDI (1<<9)
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#define S3C2410_CLKCON_UART0 (1<<10)
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#define S3C2410_CLKCON_UART1 (1<<11)
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#define S3C2410_CLKCON_UART2 (1<<12)
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#define S3C2410_CLKCON_GPIO (1<<13)
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#define S3C2410_CLKCON_RTC (1<<14)
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#define S3C2410_CLKCON_ADC (1<<15)
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#define S3C2410_CLKCON_IIC (1<<16)
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#define S3C2410_CLKCON_IIS (1<<17)
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#define S3C2410_CLKCON_SPI (1<<18)
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#define S3C2410_PLLCON_MDIVSHIFT 12
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#define S3C2410_PLLCON_PDIVSHIFT 4
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#define S3C2410_PLLCON_SDIVSHIFT 0
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#define S3C2410_PLLCON_MDIVMASK ((1<<(1+(19-12)))-1)
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#define S3C2410_PLLCON_PDIVMASK ((1<<5)-1)
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#define S3C2410_PLLCON_SDIVMASK 3
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/* DCLKCON register addresses in gpio.h */
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#define S3C2410_DCLKCON_DCLK0EN (1<<0)
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#define S3C2410_DCLKCON_DCLK0_PCLK (0<<1)
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#define S3C2410_DCLKCON_DCLK0_UCLK (1<<1)
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#define S3C2410_DCLKCON_DCLK0_DIV(x) (((x) - 1 )<<4)
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#define S3C2410_DCLKCON_DCLK0_CMP(x) (((x) - 1 )<<8)
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#define S3C2410_DCLKCON_DCLK0_DIV_MASK ((0xf)<<4)
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#define S3C2410_DCLKCON_DCLK0_CMP_MASK ((0xf)<<8)
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#define S3C2410_DCLKCON_DCLK1EN (1<<16)
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#define S3C2410_DCLKCON_DCLK1_PCLK (0<<17)
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#define S3C2410_DCLKCON_DCLK1_UCLK (1<<17)
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#define S3C2410_DCLKCON_DCLK1_DIV(x) (((x) - 1) <<20)
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#define S3C2410_DCLKCON_DCLK1_CMP(x) (((x) - 1) <<24)
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#define S3C2410_DCLKCON_DCLK1_DIV_MASK ((0xf) <<20)
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#define S3C2410_DCLKCON_DCLK1_CMP_MASK ((0xf) <<24)
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#define S3C2410_CLKDIVN_PDIVN (1<<0)
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#define S3C2410_CLKDIVN_HDIVN (1<<1)
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#define S3C2410_CLKSLOW_UCLK_OFF (1<<7)
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#define S3C2410_CLKSLOW_MPLL_OFF (1<<5)
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#define S3C2410_CLKSLOW_SLOW (1<<4)
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#define S3C2410_CLKSLOW_SLOWVAL(x) (x)
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#define S3C2410_CLKSLOW_GET_SLOWVAL(x) ((x) & 7)
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#ifndef __ASSEMBLY__
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#include <asm/div64.h>
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static inline unsigned int
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s3c2410_get_pll(unsigned int pllval, unsigned int baseclk)
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{
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unsigned int mdiv, pdiv, sdiv;
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uint64_t fvco;
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mdiv = pllval >> S3C2410_PLLCON_MDIVSHIFT;
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pdiv = pllval >> S3C2410_PLLCON_PDIVSHIFT;
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sdiv = pllval >> S3C2410_PLLCON_SDIVSHIFT;
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mdiv &= S3C2410_PLLCON_MDIVMASK;
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pdiv &= S3C2410_PLLCON_PDIVMASK;
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sdiv &= S3C2410_PLLCON_SDIVMASK;
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fvco = (uint64_t)baseclk * (mdiv + 8);
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do_div(fvco, (pdiv + 2) << sdiv);
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return (unsigned int)fvco;
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}
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#endif /* __ASSEMBLY__ */
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#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
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/* extra registers */
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#define S3C2440_CAMDIVN S3C2410_CLKREG(0x18)
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#define S3C2440_CLKCON_CAMERA (1<<19)
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#define S3C2440_CLKCON_AC97 (1<<20)
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#define S3C2440_CLKDIVN_PDIVN (1<<0)
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#define S3C2440_CLKDIVN_HDIVN_MASK (3<<1)
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#define S3C2440_CLKDIVN_HDIVN_1 (0<<1)
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#define S3C2440_CLKDIVN_HDIVN_2 (1<<1)
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#define S3C2440_CLKDIVN_HDIVN_4_8 (2<<1)
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#define S3C2440_CLKDIVN_HDIVN_3_6 (3<<1)
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#define S3C2440_CLKDIVN_UCLK (1<<3)
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#define S3C2440_CAMDIVN_CAMCLK_MASK (0xf<<0)
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#define S3C2440_CAMDIVN_CAMCLK_SEL (1<<4)
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#define S3C2440_CAMDIVN_HCLK3_HALF (1<<8)
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#define S3C2440_CAMDIVN_HCLK4_HALF (1<<9)
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#define S3C2440_CAMDIVN_DVSEN (1<<12)
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#define S3C2442_CAMDIVN_CAMCLK_DIV3 (1<<5)
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#endif /* CONFIG_CPU_S3C2440 or CONFIG_CPU_S3C2442 */
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#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
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#define S3C2412_OSCSET S3C2410_CLKREG(0x18)
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#define S3C2412_CLKSRC S3C2410_CLKREG(0x1C)
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#define S3C2412_PLLCON_OFF (1<<20)
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#define S3C2412_CLKDIVN_PDIVN (1<<2)
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#define S3C2412_CLKDIVN_HDIVN_MASK (3<<0)
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#define S3C2421_CLKDIVN_ARMDIVN (1<<3)
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#define S3C2412_CLKDIVN_USB48DIV (1<<6)
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#define S3C2412_CLKDIVN_UARTDIV_MASK (15<<8)
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#define S3C2412_CLKDIVN_UARTDIV_SHIFT (8)
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#define S3C2412_CLKDIVN_I2SDIV_MASK (15<<12)
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#define S3C2412_CLKDIVN_I2SDIV_SHIFT (12)
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#define S3C2412_CLKDIVN_CAMDIV_MASK (15<<16)
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#define S3C2412_CLKDIVN_CAMDIV_SHIFT (16)
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#define S3C2412_CLKCON_WDT (1<<28)
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#define S3C2412_CLKCON_SPI (1<<27)
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#define S3C2412_CLKCON_IIS (1<<26)
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#define S3C2412_CLKCON_IIC (1<<25)
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#define S3C2412_CLKCON_ADC (1<<24)
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#define S3C2412_CLKCON_RTC (1<<23)
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#define S3C2412_CLKCON_GPIO (1<<22)
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#define S3C2412_CLKCON_UART2 (1<<21)
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#define S3C2412_CLKCON_UART1 (1<<20)
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#define S3C2412_CLKCON_UART0 (1<<19)
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#define S3C2412_CLKCON_SDI (1<<18)
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#define S3C2412_CLKCON_PWMT (1<<17)
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#define S3C2412_CLKCON_USBD (1<<16)
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#define S3C2412_CLKCON_CAMCLK (1<<15)
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#define S3C2412_CLKCON_UARTCLK (1<<14)
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/* missing 13 */
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#define S3C2412_CLKCON_USB_HOST48 (1<<12)
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#define S3C2412_CLKCON_USB_DEV48 (1<<11)
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#define S3C2412_CLKCON_HCLKdiv2 (1<<10)
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#define S3C2412_CLKCON_HCLKx2 (1<<9)
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#define S3C2412_CLKCON_SDRAM (1<<8)
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/* missing 7 */
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#define S3C2412_CLKCON_USBH S3C2410_CLKCON_USBH
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#define S3C2412_CLKCON_LCDC S3C2410_CLKCON_LCDC
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#define S3C2412_CLKCON_NAND S3C2410_CLKCON_NAND
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#define S3C2412_CLKCON_DMA3 (1<<3)
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#define S3C2412_CLKCON_DMA2 (1<<2)
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#define S3C2412_CLKCON_DMA1 (1<<1)
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#define S3C2412_CLKCON_DMA0 (1<<0)
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/* clock sourec controls */
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#define S3C2412_CLKSRC_EXTCLKDIV_MASK (7 << 0)
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#define S3C2412_CLKSRC_EXTCLKDIV_SHIFT (0)
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#define S3C2412_CLKSRC_MDIVCLK_EXTCLKDIV (1<<3)
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#define S3C2412_CLKSRC_MSYSCLK_MPLL (1<<4)
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#define S3C2412_CLKSRC_USYSCLK_UPLL (1<<5)
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#define S3C2412_CLKSRC_UARTCLK_MPLL (1<<8)
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#define S3C2412_CLKSRC_I2SCLK_MPLL (1<<9)
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#define S3C2412_CLKSRC_USBCLK_HCLK (1<<10)
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#define S3C2412_CLKSRC_CAMCLK_HCLK (1<<11)
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#endif /* CONFIG_CPU_S3C2412 | CONFIG_CPU_S3C2413 */
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#endif /* __ASM_ARM_REGS_CLOCK */
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