1a748d2bc5
This patch adds new at91 pll clock implementation using common clk framework. The pll clock layout describe the PLLX register layout. There are four pll clock layouts: - at91rm9200 - at91sam9g20 - at91sam9g45 - sama5d3 PLL clocks are given characteristics: - min/max clock source rate - ranges of valid clock output rates - values to set in out and icpll fields for each supported output range These characteristics are checked during rate change to avoid over/underclocking. These characteristics are described in atmel's SoC datasheet in "Electrical Characteristics" paragraph. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
193 lines
9.6 KiB
C
193 lines
9.6 KiB
C
/*
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* include/linux/clk/at91_pmc.h
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*
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* Copyright (C) 2005 Ivan Kokshaysky
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* Copyright (C) SAN People
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*
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* Power Management Controller (PMC) - System peripherals registers.
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* Based on AT91RM9200 datasheet revision E.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef AT91_PMC_H
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#define AT91_PMC_H
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#ifndef __ASSEMBLY__
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extern void __iomem *at91_pmc_base;
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#define at91_pmc_read(field) \
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__raw_readl(at91_pmc_base + field)
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#define at91_pmc_write(field, value) \
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__raw_writel(value, at91_pmc_base + field)
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#else
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.extern at91_pmc_base
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#endif
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#define AT91_PMC_SCER 0x00 /* System Clock Enable Register */
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#define AT91_PMC_SCDR 0x04 /* System Clock Disable Register */
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#define AT91_PMC_SCSR 0x08 /* System Clock Status Register */
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#define AT91_PMC_PCK (1 << 0) /* Processor Clock */
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#define AT91RM9200_PMC_UDP (1 << 1) /* USB Devcice Port Clock [AT91RM9200 only] */
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#define AT91RM9200_PMC_MCKUDP (1 << 2) /* USB Device Port Master Clock Automatic Disable on Suspend [AT91RM9200 only] */
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#define AT91RM9200_PMC_UHP (1 << 4) /* USB Host Port Clock [AT91RM9200 only] */
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#define AT91SAM926x_PMC_UHP (1 << 6) /* USB Host Port Clock [AT91SAM926x only] */
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#define AT91SAM926x_PMC_UDP (1 << 7) /* USB Devcice Port Clock [AT91SAM926x only] */
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#define AT91_PMC_PCK0 (1 << 8) /* Programmable Clock 0 */
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#define AT91_PMC_PCK1 (1 << 9) /* Programmable Clock 1 */
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#define AT91_PMC_PCK2 (1 << 10) /* Programmable Clock 2 */
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#define AT91_PMC_PCK3 (1 << 11) /* Programmable Clock 3 */
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#define AT91_PMC_PCK4 (1 << 12) /* Programmable Clock 4 [AT572D940HF only] */
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#define AT91_PMC_HCK0 (1 << 16) /* AHB Clock (USB host) [AT91SAM9261 only] */
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#define AT91_PMC_HCK1 (1 << 17) /* AHB Clock (LCD) [AT91SAM9261 only] */
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#define AT91_PMC_PCER 0x10 /* Peripheral Clock Enable Register */
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#define AT91_PMC_PCDR 0x14 /* Peripheral Clock Disable Register */
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#define AT91_PMC_PCSR 0x18 /* Peripheral Clock Status Register */
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#define AT91_CKGR_UCKR 0x1C /* UTMI Clock Register [some SAM9] */
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#define AT91_PMC_UPLLEN (1 << 16) /* UTMI PLL Enable */
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#define AT91_PMC_UPLLCOUNT (0xf << 20) /* UTMI PLL Start-up Time */
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#define AT91_PMC_BIASEN (1 << 24) /* UTMI BIAS Enable */
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#define AT91_PMC_BIASCOUNT (0xf << 28) /* UTMI BIAS Start-up Time */
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#define AT91_CKGR_MOR 0x20 /* Main Oscillator Register [not on SAM9RL] */
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#define AT91_PMC_MOSCEN (1 << 0) /* Main Oscillator Enable */
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#define AT91_PMC_OSCBYPASS (1 << 1) /* Oscillator Bypass */
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#define AT91_PMC_MOSCRCEN (1 << 3) /* Main On-Chip RC Oscillator Enable [some SAM9] */
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#define AT91_PMC_OSCOUNT (0xff << 8) /* Main Oscillator Start-up Time */
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#define AT91_PMC_KEY (0x37 << 16) /* MOR Writing Key */
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#define AT91_PMC_MOSCSEL (1 << 24) /* Main Oscillator Selection [some SAM9] */
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#define AT91_PMC_CFDEN (1 << 25) /* Clock Failure Detector Enable [some SAM9] */
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#define AT91_CKGR_MCFR 0x24 /* Main Clock Frequency Register */
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#define AT91_PMC_MAINF (0xffff << 0) /* Main Clock Frequency */
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#define AT91_PMC_MAINRDY (1 << 16) /* Main Clock Ready */
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#define AT91_CKGR_PLLAR 0x28 /* PLL A Register */
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#define AT91_CKGR_PLLBR 0x2c /* PLL B Register */
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#define AT91_PMC_DIV (0xff << 0) /* Divider */
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#define AT91_PMC_PLLCOUNT (0x3f << 8) /* PLL Counter */
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#define AT91_PMC_OUT (3 << 14) /* PLL Clock Frequency Range */
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#define AT91_PMC_MUL (0x7ff << 16) /* PLL Multiplier */
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#define AT91_PMC_MUL_GET(n) ((n) >> 16 & 0x7ff)
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#define AT91_PMC3_MUL (0x7f << 18) /* PLL Multiplier [SAMA5 only] */
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#define AT91_PMC3_MUL_GET(n) ((n) >> 18 & 0x7f)
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#define AT91_PMC_USBDIV (3 << 28) /* USB Divisor (PLLB only) */
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#define AT91_PMC_USBDIV_1 (0 << 28)
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#define AT91_PMC_USBDIV_2 (1 << 28)
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#define AT91_PMC_USBDIV_4 (2 << 28)
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#define AT91_PMC_USB96M (1 << 28) /* Divider by 2 Enable (PLLB only) */
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#define AT91_PMC_MCKR 0x30 /* Master Clock Register */
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#define AT91_PMC_CSS (3 << 0) /* Master Clock Selection */
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#define AT91_PMC_CSS_SLOW (0 << 0)
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#define AT91_PMC_CSS_MAIN (1 << 0)
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#define AT91_PMC_CSS_PLLA (2 << 0)
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#define AT91_PMC_CSS_PLLB (3 << 0)
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#define AT91_PMC_CSS_UPLL (3 << 0) /* [some SAM9 only] */
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#define PMC_PRES_OFFSET 2
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#define AT91_PMC_PRES (7 << PMC_PRES_OFFSET) /* Master Clock Prescaler */
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#define AT91_PMC_PRES_1 (0 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_2 (1 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_4 (2 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_8 (3 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_16 (4 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_32 (5 << PMC_PRES_OFFSET)
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#define AT91_PMC_PRES_64 (6 << PMC_PRES_OFFSET)
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#define PMC_ALT_PRES_OFFSET 4
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#define AT91_PMC_ALT_PRES (7 << PMC_ALT_PRES_OFFSET) /* Master Clock Prescaler [alternate location] */
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#define AT91_PMC_ALT_PRES_1 (0 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_2 (1 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_4 (2 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_8 (3 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_16 (4 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_32 (5 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_ALT_PRES_64 (6 << PMC_ALT_PRES_OFFSET)
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#define AT91_PMC_MDIV (3 << 8) /* Master Clock Division */
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#define AT91RM9200_PMC_MDIV_1 (0 << 8) /* [AT91RM9200 only] */
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#define AT91RM9200_PMC_MDIV_2 (1 << 8)
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#define AT91RM9200_PMC_MDIV_3 (2 << 8)
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#define AT91RM9200_PMC_MDIV_4 (3 << 8)
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#define AT91SAM9_PMC_MDIV_1 (0 << 8) /* [SAM9 only] */
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#define AT91SAM9_PMC_MDIV_2 (1 << 8)
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#define AT91SAM9_PMC_MDIV_4 (2 << 8)
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#define AT91SAM9_PMC_MDIV_6 (3 << 8) /* [some SAM9 only] */
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#define AT91SAM9_PMC_MDIV_3 (3 << 8) /* [some SAM9 only] */
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#define AT91_PMC_PDIV (1 << 12) /* Processor Clock Division [some SAM9 only] */
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#define AT91_PMC_PDIV_1 (0 << 12)
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#define AT91_PMC_PDIV_2 (1 << 12)
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#define AT91_PMC_PLLADIV2 (1 << 12) /* PLLA divisor by 2 [some SAM9 only] */
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#define AT91_PMC_PLLADIV2_OFF (0 << 12)
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#define AT91_PMC_PLLADIV2_ON (1 << 12)
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#define AT91_PMC_USB 0x38 /* USB Clock Register [some SAM9 only] */
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#define AT91_PMC_USBS (0x1 << 0) /* USB OHCI Input clock selection */
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#define AT91_PMC_USBS_PLLA (0 << 0)
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#define AT91_PMC_USBS_UPLL (1 << 0)
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#define AT91_PMC_USBS_PLLB (1 << 0) /* [AT91SAMN12 only] */
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#define AT91_PMC_OHCIUSBDIV (0xF << 8) /* Divider for USB OHCI Clock */
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#define AT91_PMC_OHCIUSBDIV_1 (0x0 << 8)
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#define AT91_PMC_OHCIUSBDIV_2 (0x1 << 8)
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#define AT91_PMC_SMD 0x3c /* Soft Modem Clock Register [some SAM9 only] */
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#define AT91_PMC_SMDS (0x1 << 0) /* SMD input clock selection */
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#define AT91_PMC_SMD_DIV (0x1f << 8) /* SMD input clock divider */
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#define AT91_PMC_SMDDIV(n) (((n) << 8) & AT91_PMC_SMD_DIV)
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#define AT91_PMC_PCKR(n) (0x40 + ((n) * 4)) /* Programmable Clock 0-N Registers */
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#define AT91_PMC_ALT_PCKR_CSS (0x7 << 0) /* Programmable Clock Source Selection [alternate length] */
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#define AT91_PMC_CSS_MASTER (4 << 0) /* [some SAM9 only] */
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#define AT91_PMC_CSSMCK (0x1 << 8) /* CSS or Master Clock Selection */
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#define AT91_PMC_CSSMCK_CSS (0 << 8)
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#define AT91_PMC_CSSMCK_MCK (1 << 8)
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#define AT91_PMC_IER 0x60 /* Interrupt Enable Register */
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#define AT91_PMC_IDR 0x64 /* Interrupt Disable Register */
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#define AT91_PMC_SR 0x68 /* Status Register */
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#define AT91_PMC_MOSCS (1 << 0) /* MOSCS Flag */
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#define AT91_PMC_LOCKA (1 << 1) /* PLLA Lock */
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#define AT91_PMC_LOCKB (1 << 2) /* PLLB Lock */
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#define AT91_PMC_MCKRDY (1 << 3) /* Master Clock */
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#define AT91_PMC_LOCKU (1 << 6) /* UPLL Lock [some SAM9] */
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#define AT91_PMC_PCK0RDY (1 << 8) /* Programmable Clock 0 */
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#define AT91_PMC_PCK1RDY (1 << 9) /* Programmable Clock 1 */
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#define AT91_PMC_PCK2RDY (1 << 10) /* Programmable Clock 2 */
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#define AT91_PMC_PCK3RDY (1 << 11) /* Programmable Clock 3 */
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#define AT91_PMC_MOSCSELS (1 << 16) /* Main Oscillator Selection [some SAM9] */
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#define AT91_PMC_MOSCRCS (1 << 17) /* Main On-Chip RC [some SAM9] */
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#define AT91_PMC_CFDEV (1 << 18) /* Clock Failure Detector Event [some SAM9] */
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#define AT91_PMC_IMR 0x6c /* Interrupt Mask Register */
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#define AT91_PMC_PLLICPR 0x80 /* PLL Charge Pump Current Register */
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#define AT91_PMC_PROT 0xe4 /* Write Protect Mode Register [some SAM9] */
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#define AT91_PMC_WPEN (0x1 << 0) /* Write Protect Enable */
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#define AT91_PMC_WPKEY (0xffffff << 8) /* Write Protect Key */
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#define AT91_PMC_PROTKEY (0x504d43 << 8) /* Activation Code */
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#define AT91_PMC_WPSR 0xe8 /* Write Protect Status Register [some SAM9] */
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#define AT91_PMC_WPVS (0x1 << 0) /* Write Protect Violation Status */
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#define AT91_PMC_WPVSRC (0xffff << 8) /* Write Protect Violation Source */
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#define AT91_PMC_PCER1 0x100 /* Peripheral Clock Enable Register 1 [SAMA5 only]*/
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#define AT91_PMC_PCDR1 0x104 /* Peripheral Clock Enable Register 1 */
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#define AT91_PMC_PCSR1 0x108 /* Peripheral Clock Enable Register 1 */
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#define AT91_PMC_PCR 0x10c /* Peripheral Control Register [some SAM9 and SAMA5] */
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#define AT91_PMC_PCR_PID (0x3f << 0) /* Peripheral ID */
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#define AT91_PMC_PCR_CMD (0x1 << 12) /* Command (read=0, write=1) */
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#define AT91_PMC_PCR_DIV(n) ((n) << 16) /* Divisor Value */
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#define AT91_PMC_PCR_DIV0 0x0 /* Peripheral clock is MCK */
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#define AT91_PMC_PCR_DIV2 0x1 /* Peripheral clock is MCK/2 */
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#define AT91_PMC_PCR_DIV4 0x2 /* Peripheral clock is MCK/4 */
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#define AT91_PMC_PCR_DIV8 0x3 /* Peripheral clock is MCK/8 */
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#define AT91_PMC_PCR_EN (0x1 << 28) /* Enable */
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#endif
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