diff options
Diffstat (limited to 'arch/arm/mach-hs/hs-dt.c')
| -rw-r--r-- | arch/arm/mach-hs/hs-dt.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/arm/mach-hs/hs-dt.c b/arch/arm/mach-hs/hs-dt.c new file mode 100644 index 000000000000..8599c0c91c46 --- /dev/null +++ b/arch/arm/mach-hs/hs-dt.c @@ -0,0 +1,97 @@ +/* + * (Hisilicon's Hi36xx/Hi37xx SoC based) flattened device tree enabled machine + * + * Copyright (c) 2012-2013 Linaro Ltd. + * + * Haojian Zhuang <haojian.zhuang@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> + +#include <asm/hardware/arm_timer.h> +#include <asm/hardware/gic.h> +#include <asm/hardware/timer-sp.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/time.h> + +static struct of_device_id hs_timer_match[] __initdata = { + { .compatible = "arm,sp804", }, + {} +}; + +static struct clk_lookup sp804_lookup = { + .dev_id = "sp804", + .clk = NULL, +}; + +extern void __init hs_init_clocks(void); +static void __init hs_timer_init(void) +{ + struct device_node *node = NULL; + void __iomem *base; + int irq; + + hs_init_clocks(); + + node = of_find_matching_node(NULL, hs_timer_match); + WARN_ON(!node); + if (!node) { + pr_err("Failed to find sp804 timer\n"); + return; + } + base = of_iomap(node, 0); + WARN_ON(!base); + + /* timer0 is used as clock event, and timer1 is clock source. */ + irq = irq_of_parse_and_map(node, 0); + WARN_ON(!irq); + + sp804_lookup.clk = of_clk_get(node, 0); + clkdev_add(&sp804_lookup); + + sp804_clocksource_and_sched_clock_init(base + TIMER_2_BASE, "timer1"); + sp804_clockevents_init(base, irq, "timer0"); +} + +static struct sys_timer hs_timer = { + .init = hs_timer_init, +}; + +static struct of_device_id hs_irq_match[] __initdata = { + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + {} +}; + +static void __init hs_irq_init(void) +{ + of_irq_init(hs_irq_match); +} + +static void __init hs_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static const char *hs_compat[] __initdata = { + "hisilicon,hi3620-hi4511", + NULL, +}; + +DT_MACHINE_START(HS_DT, "Hisilicon Hi36xx/Hi37xx (Flattened Device Tree)") + /* Maintainer: Haojian Zhuang <haojian.zhuang@linaro.org> */ + .map_io = debug_ll_io_init, + .init_irq = hs_irq_init, + .timer = &hs_timer, + .init_machine = hs_init, + .handle_irq = gic_handle_irq, + .dt_compat = hs_compat, +MACHINE_END |