diff options
Diffstat (limited to 'arch/arm/mach-l7200/include/mach/pmu.h')
| -rw-r--r-- | arch/arm/mach-l7200/include/mach/pmu.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/arch/arm/mach-l7200/include/mach/pmu.h b/arch/arm/mach-l7200/include/mach/pmu.h new file mode 100644 index 0000000..a2da7ae --- /dev/null +++ b/arch/arm/mach-l7200/include/mach/pmu.h @@ -0,0 +1,125 @@ +/****************************************************************************/ +/* + * 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) |
