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ULP0 fast improves suspend/resume time with few milliseconds the drawback being the power consumption. The mean values measured for suspend/resume time are as follows (measured on SAMA5D2 Xplained board), ULP0 compared with fast ULP0: - ulp0 fast: suspend time: 169 ms, resume time: 216 ms - ulp0 : suspend time: 197 ms, resume time: 258 ms Current consumption while suspended (measured on SAMA5D2 Xplained board): - ulp0 fast: 730uA - ulp0 : 270uA Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1596616610-15460-2-git-send-email-claudiu.beznea@microchip.com
43 lines
896 B
C
43 lines
896 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* AT91 Power Management
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*
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* Copyright (C) 2005 David Brownell
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*/
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#ifndef __ARCH_ARM_MACH_AT91_PM
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#define __ARCH_ARM_MACH_AT91_PM
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#include <asm/proc-fns.h>
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#include <linux/mfd/syscon/atmel-mc.h>
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#include <soc/at91/at91sam9_ddrsdr.h>
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#include <soc/at91/at91sam9_sdramc.h>
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#define AT91_MEMCTRL_MC 0
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#define AT91_MEMCTRL_SDRAMC 1
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#define AT91_MEMCTRL_DDRSDR 2
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#define AT91_PM_STANDBY 0x00
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#define AT91_PM_ULP0 0x01
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#define AT91_PM_ULP0_FAST 0x02
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#define AT91_PM_ULP1 0x03
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#define AT91_PM_BACKUP 0x04
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#ifndef __ASSEMBLY__
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struct at91_pm_data {
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void __iomem *pmc;
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void __iomem *ramc[2];
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unsigned long uhp_udp_mask;
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unsigned int memctrl;
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unsigned int mode;
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void __iomem *shdwc;
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void __iomem *sfrbu;
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unsigned int standby_mode;
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unsigned int suspend_mode;
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unsigned int pmc_mckr_offset;
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unsigned int pmc_version;
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};
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#endif
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#endif
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