2019-06-01 08:08:33 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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2010-03-25 14:12:41 +00:00
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/*
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* Copyright 1999 - 2003 ARM Limited
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* Copyright 2000 Deep Blue Solutions Ltd
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* Copyright 2008 Cavium Networks
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/clockchips.h>
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#include <linux/io.h>
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2012-12-27 19:10:24 +00:00
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#include <linux/irqchip/arm-gic.h>
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2013-03-14 21:27:32 +00:00
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/usb/ehci_pdriver.h>
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#include <linux/usb/ohci_pdriver.h>
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#include <asm/mach/arch.h>
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2010-03-25 14:12:41 +00:00
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <asm/mach/irq.h>
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2011-07-06 12:45:09 +00:00
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#include <asm/hardware/cache-l2x0.h>
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2013-03-13 12:15:25 +00:00
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#include "cns3xxx.h"
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2010-03-25 14:12:41 +00:00
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#include "core.h"
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2013-03-14 21:27:32 +00:00
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#include "pm.h"
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2010-03-25 14:12:41 +00:00
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static struct map_desc cns3xxx_io_desc[] __initdata = {
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{
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2013-03-25 09:23:33 +00:00
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.virtual = CNS3XXX_TC11MP_SCU_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_TC11MP_SCU_BASE),
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.length = SZ_8K,
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2010-03-25 14:12:41 +00:00
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_TIMER1_2_3_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_TIMER1_2_3_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_MISC_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_MISC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PM_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PM_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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2014-03-04 07:37:10 +00:00
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#ifdef CONFIG_PCI
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}, {
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.virtual = CNS3XXX_PCIE0_HOST_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE0_HOST_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PCIE0_CFG0_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG0_BASE),
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.length = SZ_64K, /* really 4 KiB at offset 32 KiB */
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PCIE0_CFG1_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG1_BASE),
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.length = SZ_16M,
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PCIE1_HOST_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE1_HOST_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PCIE1_CFG0_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG0_BASE),
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.length = SZ_64K, /* really 4 KiB at offset 32 KiB */
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.type = MT_DEVICE,
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}, {
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.virtual = CNS3XXX_PCIE1_CFG1_BASE_VIRT,
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.pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG1_BASE),
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.length = SZ_16M,
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.type = MT_DEVICE,
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#endif
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2010-03-25 14:12:41 +00:00
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},
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};
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void __init cns3xxx_map_io(void)
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{
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iotable_init(cns3xxx_io_desc, ARRAY_SIZE(cns3xxx_io_desc));
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}
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/* used by entry-macro.S */
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void __init cns3xxx_init_irq(void)
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{
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2019-03-11 15:38:10 +00:00
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gic_init(IOMEM(CNS3XXX_TC11MP_GIC_DIST_BASE_VIRT),
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2012-03-09 23:16:40 +00:00
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IOMEM(CNS3XXX_TC11MP_GIC_CPU_BASE_VIRT));
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2010-03-25 14:12:41 +00:00
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}
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void cns3xxx_power_off(void)
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{
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2012-03-09 23:16:40 +00:00
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u32 __iomem *pm_base = IOMEM(CNS3XXX_PM_BASE_VIRT);
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2010-03-25 14:12:41 +00:00
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u32 clkctrl;
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printk(KERN_INFO "powering system down...\n");
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clkctrl = readl(pm_base + PM_SYS_CLK_CTRL_OFFSET);
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clkctrl &= 0xfffff1ff;
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clkctrl |= (0x5 << 9); /* Hibernate */
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writel(clkctrl, pm_base + PM_SYS_CLK_CTRL_OFFSET);
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}
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/*
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* Timer
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*/
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static void __iomem *cns3xxx_tmr1;
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2015-02-27 08:09:52 +00:00
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static int cns3xxx_shutdown(struct clock_event_device *clk)
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{
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writel(0, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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return 0;
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}
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static int cns3xxx_set_oneshot(struct clock_event_device *clk)
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{
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unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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/* period set, and timer enabled in 'next_event' hook */
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ctrl |= (1 << 2) | (1 << 9);
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writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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return 0;
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}
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static int cns3xxx_set_periodic(struct clock_event_device *clk)
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2010-03-25 14:12:41 +00:00
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{
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unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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int pclk = cns3xxx_cpu_clock() / 8;
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int reload;
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2015-02-27 08:09:52 +00:00
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reload = pclk * 20 / (3 * HZ) * 0x25000;
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writel(reload, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
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ctrl |= (1 << 0) | (1 << 2) | (1 << 9);
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2010-03-25 14:12:41 +00:00
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writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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2015-02-27 08:09:52 +00:00
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return 0;
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2010-03-25 14:12:41 +00:00
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}
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static int cns3xxx_timer_set_next_event(unsigned long evt,
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struct clock_event_device *unused)
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{
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unsigned long ctrl = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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writel(evt, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
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writel(ctrl | (1 << 0), cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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return 0;
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}
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static struct clock_event_device cns3xxx_tmr1_clockevent = {
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2015-02-27 08:09:52 +00:00
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.name = "cns3xxx timer1",
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.features = CLOCK_EVT_FEAT_PERIODIC |
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CLOCK_EVT_FEAT_ONESHOT,
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.set_state_shutdown = cns3xxx_shutdown,
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.set_state_periodic = cns3xxx_set_periodic,
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.set_state_oneshot = cns3xxx_set_oneshot,
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.tick_resume = cns3xxx_shutdown,
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.set_next_event = cns3xxx_timer_set_next_event,
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.rating = 350,
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.cpumask = cpu_all_mask,
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2010-03-25 14:12:41 +00:00
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};
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static void __init cns3xxx_clockevents_init(unsigned int timer_irq)
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{
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cns3xxx_tmr1_clockevent.irq = timer_irq;
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2013-01-12 11:50:05 +00:00
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clockevents_config_and_register(&cns3xxx_tmr1_clockevent,
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(cns3xxx_cpu_clock() >> 3) * 1000000,
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0xf, 0xffffffff);
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2010-03-25 14:12:41 +00:00
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}
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/*
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* IRQ handler for the timer
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*/
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static irqreturn_t cns3xxx_timer_interrupt(int irq, void *dev_id)
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{
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struct clock_event_device *evt = &cns3xxx_tmr1_clockevent;
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u32 __iomem *stat = cns3xxx_tmr1 + TIMER1_2_INTERRUPT_STATUS_OFFSET;
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u32 val;
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/* Clear the interrupt */
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val = readl(stat);
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writel(val & ~(1 << 2), stat);
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evt->event_handler(evt);
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return IRQ_HANDLED;
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}
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/*
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* Set up the clock source and clock events devices
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*/
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static void __init __cns3xxx_timer_init(unsigned int timer_irq)
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{
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u32 val;
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u32 irq_mask;
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/*
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* Initialise to a known state (all timers off)
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*/
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/* disable timer1 and timer2 */
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writel(0, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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/* stop free running timer3 */
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writel(0, cns3xxx_tmr1 + TIMER_FREERUN_CONTROL_OFFSET);
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/* timer1 */
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writel(0x5C800, cns3xxx_tmr1 + TIMER1_COUNTER_OFFSET);
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writel(0x5C800, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
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writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V1_OFFSET);
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writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V2_OFFSET);
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/* mask irq, non-mask timer1 overflow */
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irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
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irq_mask &= ~(1 << 2);
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irq_mask |= 0x03;
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writel(irq_mask, cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
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/* down counter */
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val = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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val |= (1 << 9);
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writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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/* timer2 */
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writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V1_OFFSET);
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writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V2_OFFSET);
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/* mask irq */
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irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
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irq_mask |= ((1 << 3) | (1 << 4) | (1 << 5));
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writel(irq_mask, cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
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/* down counter */
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val = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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val |= (1 << 10);
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writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
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/* Make irqs happen for the system timer */
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2020-03-27 12:44:22 +00:00
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if (request_irq(timer_irq, cns3xxx_timer_interrupt,
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IRQF_TIMER | IRQF_IRQPOLL, "timer", NULL))
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pr_err("Failed to request irq %d (timer)\n", timer_irq);
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2010-03-25 14:12:41 +00:00
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cns3xxx_clockevents_init(timer_irq);
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}
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2012-11-08 19:40:59 +00:00
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void __init cns3xxx_timer_init(void)
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2010-03-25 14:12:41 +00:00
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{
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2012-03-09 23:16:40 +00:00
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cns3xxx_tmr1 = IOMEM(CNS3XXX_TIMER1_2_3_BASE_VIRT);
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2010-03-25 14:12:41 +00:00
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__cns3xxx_timer_init(IRQ_CNS3XXX_TIMER0);
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}
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2011-07-06 12:45:09 +00:00
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#ifdef CONFIG_CACHE_L2X0
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void __init cns3xxx_l2x0_init(void)
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{
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void __iomem *base = ioremap(CNS3XXX_L2C_BASE, SZ_4K);
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u32 val;
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if (WARN_ON(!base))
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return;
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/*
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* Tag RAM Control register
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*
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* bit[10:8] - 1 cycle of write accesses latency
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* bit[6:4] - 1 cycle of read accesses latency
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* bit[3:0] - 1 cycle of setup latency
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*
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* 1 cycle of latency for setup, read and write accesses
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*/
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2014-03-16 20:52:25 +00:00
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val = readl(base + L310_TAG_LATENCY_CTRL);
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2011-07-06 12:45:09 +00:00
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val &= 0xfffff888;
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2014-03-16 20:52:25 +00:00
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writel(val, base + L310_TAG_LATENCY_CTRL);
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2011-07-06 12:45:09 +00:00
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/*
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* Data RAM Control register
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*
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* bit[10:8] - 1 cycles of write accesses latency
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* bit[6:4] - 1 cycles of read accesses latency
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* bit[3:0] - 1 cycle of setup latency
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*
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* 1 cycle of latency for setup, read and write accesses
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*/
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2014-03-16 20:52:25 +00:00
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val = readl(base + L310_DATA_LATENCY_CTRL);
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2011-07-06 12:45:09 +00:00
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val &= 0xfffff888;
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2014-03-16 20:52:25 +00:00
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writel(val, base + L310_DATA_LATENCY_CTRL);
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2011-07-06 12:45:09 +00:00
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/* 32 KiB, 8-way, parity disable */
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2014-03-19 12:06:27 +00:00
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l2x0_init(base, 0x00500000, 0xfe0f0fff);
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2011-07-06 12:45:09 +00:00
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}
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#endif /* CONFIG_CACHE_L2X0 */
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2013-03-14 21:27:32 +00:00
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static int csn3xxx_usb_power_on(struct platform_device *pdev)
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{
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/*
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* EHCI and OHCI share the same clock and power,
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* resetting twice would cause the 1st controller been reset.
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* Therefore only do power up at the first up device, and
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* power down at the last down device.
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*
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* Set USB AHB INCR length to 16
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*/
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if (atomic_inc_return(&usb_pwr_ref) == 1) {
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cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
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cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
|
|
|
|
cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
|
|
|
|
__raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
|
|
|
|
MISC_CHIP_CONFIG_REG);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void csn3xxx_usb_power_off(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* EHCI and OHCI share the same clock and power,
|
|
|
|
* resetting twice would cause the 1st controller been reset.
|
|
|
|
* Therefore only do power up at the first up device, and
|
|
|
|
* power down at the last down device.
|
|
|
|
*/
|
|
|
|
if (atomic_dec_return(&usb_pwr_ref) == 0)
|
|
|
|
cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct usb_ehci_pdata cns3xxx_usb_ehci_pdata = {
|
|
|
|
.power_on = csn3xxx_usb_power_on,
|
|
|
|
.power_off = csn3xxx_usb_power_off,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct usb_ohci_pdata cns3xxx_usb_ohci_pdata = {
|
|
|
|
.num_ports = 1,
|
|
|
|
.power_on = csn3xxx_usb_power_on,
|
|
|
|
.power_off = csn3xxx_usb_power_off,
|
|
|
|
};
|
|
|
|
|
2017-05-11 11:50:16 +00:00
|
|
|
static const struct of_dev_auxdata cns3xxx_auxdata[] __initconst = {
|
2013-03-14 21:27:32 +00:00
|
|
|
{ "intel,usb-ehci", CNS3XXX_USB_BASE, "ehci-platform", &cns3xxx_usb_ehci_pdata },
|
|
|
|
{ "intel,usb-ohci", CNS3XXX_USB_OHCI_BASE, "ohci-platform", &cns3xxx_usb_ohci_pdata },
|
|
|
|
{ "cavium,cns3420-ahci", CNS3XXX_SATA2_BASE, "ahci", NULL },
|
|
|
|
{ "cavium,cns3420-sdhci", CNS3XXX_SDIO_BASE, "ahci", NULL },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
|
|
|
|
static void __init cns3xxx_init(void)
|
|
|
|
{
|
|
|
|
struct device_node *dn;
|
|
|
|
|
|
|
|
cns3xxx_l2x0_init();
|
|
|
|
|
|
|
|
dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-ahci");
|
|
|
|
if (of_device_is_available(dn)) {
|
|
|
|
u32 tmp;
|
|
|
|
|
|
|
|
tmp = __raw_readl(MISC_SATA_POWER_MODE);
|
|
|
|
tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */
|
|
|
|
tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */
|
|
|
|
__raw_writel(tmp, MISC_SATA_POWER_MODE);
|
|
|
|
|
|
|
|
/* Enable SATA PHY */
|
|
|
|
cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0);
|
|
|
|
cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1);
|
|
|
|
|
|
|
|
/* Enable SATA Clock */
|
|
|
|
cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA);
|
|
|
|
|
|
|
|
/* De-Asscer SATA Reset */
|
|
|
|
cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA));
|
|
|
|
}
|
|
|
|
|
|
|
|
dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-sdhci");
|
|
|
|
if (of_device_is_available(dn)) {
|
|
|
|
u32 __iomem *gpioa = IOMEM(CNS3XXX_MISC_BASE_VIRT + 0x0014);
|
|
|
|
u32 gpioa_pins = __raw_readl(gpioa);
|
|
|
|
|
|
|
|
/* MMC/SD pins share with GPIOA */
|
|
|
|
gpioa_pins |= 0x1fff0004;
|
|
|
|
__raw_writel(gpioa_pins, gpioa);
|
|
|
|
|
|
|
|
cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
|
|
|
|
cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO));
|
|
|
|
}
|
|
|
|
|
|
|
|
pm_power_off = cns3xxx_power_off;
|
|
|
|
|
2016-06-01 06:53:05 +00:00
|
|
|
of_platform_default_populate(NULL, cns3xxx_auxdata, NULL);
|
2013-03-14 21:27:32 +00:00
|
|
|
}
|
|
|
|
|
2015-07-27 22:27:52 +00:00
|
|
|
static const char *const cns3xxx_dt_compat[] __initconst = {
|
2013-03-14 21:27:32 +00:00
|
|
|
"cavium,cns3410",
|
|
|
|
"cavium,cns3420",
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
DT_MACHINE_START(CNS3XXX_DT, "Cavium Networks CNS3xxx")
|
|
|
|
.dt_compat = cns3xxx_dt_compat,
|
|
|
|
.map_io = cns3xxx_map_io,
|
|
|
|
.init_irq = cns3xxx_init_irq,
|
|
|
|
.init_time = cns3xxx_timer_init,
|
|
|
|
.init_machine = cns3xxx_init,
|
2014-09-03 13:18:12 +00:00
|
|
|
.init_late = cns3xxx_pcie_init_late,
|
2013-03-14 21:27:32 +00:00
|
|
|
.restart = cns3xxx_restart,
|
|
|
|
MACHINE_END
|