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44e259ac90
The PMU device contains an interrupt controller, power control and resets. The interrupt controller is a little sub-standard in that there is no race free way to clear down pending interrupts, so we try to avoid problems by reducing the window as much as possible, and clearing as infrequently as possible. The interrupt support is implemented using an IRQ domain, and the parent interrupt referenced in the standard DT way. The power domains and reset support is closely related - there is a defined sequence for powering down a domain which is tightly coupled with asserting the reset. Hence, it makes sense to group these two together, and in order to avoid any locking contention disrupting this sequence, we avoid the use of syscon or regmap. This patch adds the core PMU driver: power domains must be defined in the DT file in order to make use of them. The reset controller can be referenced in the standard way for reset controllers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
41 lines
976 B
C
41 lines
976 B
C
/*
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* arch/arm/mach-mvebu/dove.c
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*
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* Marvell Dove 88AP510 System On Chip FDT Board
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/init.h>
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#include <linux/mbus.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/soc/dove/pmu.h>
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#include <asm/hardware/cache-tauros2.h>
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#include <asm/mach/arch.h>
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#include "common.h"
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static void __init dove_init(void)
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{
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pr_info("Dove 88AP510 SoC\n");
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#ifdef CONFIG_CACHE_TAUROS2
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tauros2_init(0);
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#endif
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BUG_ON(mvebu_mbus_dt_init(false));
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dove_init_pmu();
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static const char * const dove_dt_compat[] __initconst = {
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"marvell,dove",
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NULL
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};
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DT_MACHINE_START(DOVE_DT, "Marvell Dove")
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.init_machine = dove_init,
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.restart = mvebu_restart,
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.dt_compat = dove_dt_compat,
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MACHINE_END
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