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/****************************************************************************/
/*
* linux/include/asm-arm/arch-l7200/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)
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