d2168146c2
A number of board files in arch/arm and arch/unicore32 explicitly reference platform_bus device as a parent for new platform devices. This is unnecessary, as platform device API guarantees that devices with NULL parent are going to by adopted by the mentioned "root" device. This patch removes or replaces with NULL such references. Signed-off-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
2 KiB
C
75 lines
2 KiB
C
/*
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* Copyright (C) 2012-2014 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/clocksource.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include "kona_l2_cache.h"
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#define SECWDOG_OFFSET 0x00000000
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#define SECWDOG_RESERVED_MASK 0xe2000000
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#define SECWDOG_WD_LOAD_FLAG_MASK 0x10000000
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#define SECWDOG_EN_MASK 0x08000000
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#define SECWDOG_SRSTEN_MASK 0x04000000
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#define SECWDOG_CLKS_SHIFT 20
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#define SECWDOG_COUNT_SHIFT 0
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static void bcm281xx_restart(enum reboot_mode mode, const char *cmd)
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{
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uint32_t val;
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void __iomem *base;
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struct device_node *np_wdog;
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np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt");
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if (!np_wdog) {
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pr_emerg("Couldn't find brcm,kona-wdt\n");
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return;
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}
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base = of_iomap(np_wdog, 0);
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if (!base) {
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pr_emerg("Couldn't map brcm,kona-wdt\n");
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return;
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}
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/* Enable watchdog with short timeout (244us). */
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val = readl(base + SECWDOG_OFFSET);
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val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK;
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val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK |
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(0x15 << SECWDOG_CLKS_SHIFT) |
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(0x8 << SECWDOG_COUNT_SHIFT);
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writel(val, base + SECWDOG_OFFSET);
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/* Wait for reset */
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while (1);
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}
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static void __init bcm281xx_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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kona_l2_cache_init();
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}
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static const char * const bcm281xx_dt_compat[] = {
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"brcm,bcm11351", /* Have to use the first number upstreamed */
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NULL,
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};
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DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor")
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.init_machine = bcm281xx_init,
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.restart = bcm281xx_restart,
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.dt_compat = bcm281xx_dt_compat,
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MACHINE_END
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