126 lines
4.3 KiB
C
126 lines
4.3 KiB
C
/****************************************************************************/
|
|
/*
|
|
* arch/arm/mach-l7200/include/mach/pmu.h
|
|
*
|
|
* Registers and helper functions for the L7200 Link-Up Systems
|
|
* Power Management Unit (PMU).
|
|
*
|
|
* (C) Copyright 2000, S A McConnell (samcconn@cotw.com)
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
/****************************************************************************/
|
|
|
|
#define PMU_OFF 0x00050000 /* Offset from IO_START to the PMU registers. */
|
|
|
|
/* IO_START and IO_BASE are defined in hardware.h */
|
|
|
|
#define PMU_START (IO_START + PMU_OFF) /* Physical addr. of the PMU reg. */
|
|
#define PMU_BASE (IO_BASE + PMU_OFF) /* Virtual addr. of the PMU reg. */
|
|
|
|
|
|
/* Define the PMU registers for use by device drivers and the kernel. */
|
|
|
|
typedef struct {
|
|
unsigned int CURRENT; /* Current configuration register */
|
|
unsigned int NEXT; /* Next configuration register */
|
|
unsigned int reserved;
|
|
unsigned int RUN; /* Run configuration register */
|
|
unsigned int COMM; /* Configuration command register */
|
|
unsigned int SDRAM; /* SDRAM configuration bypass register */
|
|
} pmu_interface;
|
|
|
|
#define PMU ((volatile pmu_interface *)(PMU_BASE))
|
|
|
|
|
|
/* Macro's for reading the common register fields. */
|
|
|
|
#define GET_TRANSOP(reg) ((reg >> 25) & 0x03) /* Bits 26-25 */
|
|
#define GET_OSCEN(reg) ((reg >> 16) & 0x01)
|
|
#define GET_OSCMUX(reg) ((reg >> 15) & 0x01)
|
|
#define GET_PLLMUL(reg) ((reg >> 9) & 0x3f) /* Bits 14-9 */
|
|
#define GET_PLLEN(reg) ((reg >> 8) & 0x01)
|
|
#define GET_PLLMUX(reg) ((reg >> 7) & 0x01)
|
|
#define GET_BCLK_DIV(reg) ((reg >> 3) & 0x03) /* Bits 4-3 */
|
|
#define GET_SDRB_SEL(reg) ((reg >> 2) & 0x01)
|
|
#define GET_SDRF_SEL(reg) ((reg >> 1) & 0x01)
|
|
#define GET_FASTBUS(reg) (reg & 0x1)
|
|
|
|
/* CFG_NEXT register */
|
|
|
|
#define CFG_NEXT_CLOCKRECOVERY ((PMU->NEXT >> 18) & 0x7f) /* Bits 24-18 */
|
|
#define CFG_NEXT_INTRET ((PMU->NEXT >> 17) & 0x01)
|
|
#define CFG_NEXT_SDR_STOP ((PMU->NEXT >> 6) & 0x01)
|
|
#define CFG_NEXT_SYSCLKEN ((PMU->NEXT >> 5) & 0x01)
|
|
|
|
/* Useful field values that can be used to construct the
|
|
* CFG_NEXT and CFG_RUN registers.
|
|
*/
|
|
|
|
#define TRANSOP_NOP 0<<25 /* NOCHANGE_NOSTALL */
|
|
#define NOCHANGE_STALL 1<<25
|
|
#define CHANGE_NOSTALL 2<<25
|
|
#define CHANGE_STALL 3<<25
|
|
|
|
#define INTRET 1<<17
|
|
#define OSCEN 1<<16
|
|
#define OSCMUX 1<<15
|
|
|
|
/* PLL frequencies */
|
|
|
|
#define PLLMUL_0 0<<9 /* 3.6864 MHz */
|
|
#define PLLMUL_1 1<<9 /* ?????? MHz */
|
|
#define PLLMUL_5 5<<9 /* 18.432 MHz */
|
|
#define PLLMUL_10 10<<9 /* 36.864 MHz */
|
|
#define PLLMUL_18 18<<9 /* ?????? MHz */
|
|
#define PLLMUL_20 20<<9 /* 73.728 MHz */
|
|
#define PLLMUL_32 32<<9 /* ?????? MHz */
|
|
#define PLLMUL_35 35<<9 /* 129.024 MHz */
|
|
#define PLLMUL_36 36<<9 /* ?????? MHz */
|
|
#define PLLMUL_39 39<<9 /* ?????? MHz */
|
|
#define PLLMUL_40 40<<9 /* 147.456 MHz */
|
|
|
|
/* Clock recovery times */
|
|
|
|
#define CRCLOCK_1 1<<18
|
|
#define CRCLOCK_2 2<<18
|
|
#define CRCLOCK_4 4<<18
|
|
#define CRCLOCK_8 8<<18
|
|
#define CRCLOCK_16 16<<18
|
|
#define CRCLOCK_32 32<<18
|
|
#define CRCLOCK_63 63<<18
|
|
#define CRCLOCK_127 127<<18
|
|
|
|
#define PLLEN 1<<8
|
|
#define PLLMUX 1<<7
|
|
#define SDR_STOP 1<<6
|
|
#define SYSCLKEN 1<<5
|
|
|
|
#define BCLK_DIV_4 2<<3
|
|
#define BCLK_DIV_2 1<<3
|
|
#define BCLK_DIV_1 0<<3
|
|
|
|
#define SDRB_SEL 1<<2
|
|
#define SDRF_SEL 1<<1
|
|
#define FASTBUS 1<<0
|
|
|
|
|
|
/* CFG_SDRAM */
|
|
|
|
#define SDRREFFQ 1<<0 /* Only if SDRSTOPRQ is not set. */
|
|
#define SDRREFACK 1<<1 /* Read-only */
|
|
#define SDRSTOPRQ 1<<2 /* Only if SDRREFFQ is not set. */
|
|
#define SDRSTOPACK 1<<3 /* Read-only */
|
|
#define PICEN 1<<4 /* Enable Co-procesor */
|
|
#define PICTEST 1<<5
|
|
|
|
#define GET_SDRREFFQ ((PMU->SDRAM >> 0) & 0x01)
|
|
#define GET_SDRREFACK ((PMU->SDRAM >> 1) & 0x01) /* Read-only */
|
|
#define GET_SDRSTOPRQ ((PMU->SDRAM >> 2) & 0x01)
|
|
#define GET_SDRSTOPACK ((PMU->SDRAM >> 3) & 0x01) /* Read-only */
|
|
#define GET_PICEN ((PMU->SDRAM >> 4) & 0x01)
|
|
#define GET_PICTEST ((PMU->SDRAM >> 5) & 0x01)
|