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ce4c6f9b59
It adds gpio support for device tree boot. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
/*
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* Copyright 2012 Freescale Semiconductor, Inc.
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* Copyright 2012 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/clk.h>
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#include <linux/clkdev.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/init.h>
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#include <linux/irqdomain.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/common.h>
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static int __init mxs_icoll_add_irq_domain(struct device_node *np,
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struct device_node *interrupt_parent)
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{
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irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);
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return 0;
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}
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static int __init mxs_gpio_add_irq_domain(struct device_node *np,
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struct device_node *interrupt_parent)
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{
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static int gpio_irq_base = MXS_GPIO_IRQ_START;
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irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
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gpio_irq_base += 32;
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return 0;
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}
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static const struct of_device_id mxs_irq_match[] __initconst = {
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{ .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
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{ .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, },
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{ /* sentinel */ }
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};
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static void __init mxs_dt_init_irq(void)
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{
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icoll_init_irq();
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of_irq_init(mxs_irq_match);
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}
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static void __init imx23_timer_init(void)
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{
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mx23_clocks_init();
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}
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static struct sys_timer imx23_timer = {
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.init = imx23_timer_init,
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};
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static void __init imx28_timer_init(void)
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{
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mx28_clocks_init();
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}
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static struct sys_timer imx28_timer = {
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.init = imx28_timer_init,
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};
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static void __init imx28_evk_init(void)
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{
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struct clk *clk;
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/* Enable fec phy clock */
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clk = clk_get_sys("enet_out", NULL);
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if (!IS_ERR(clk))
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clk_prepare_enable(clk);
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}
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static void __init mxs_machine_init(void)
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{
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if (of_machine_is_compatible("fsl,imx28-evk"))
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imx28_evk_init();
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of_platform_populate(NULL, of_default_bus_match_table,
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NULL, NULL);
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}
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static const char *imx23_dt_compat[] __initdata = {
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"fsl,imx23-evk",
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"fsl,imx23",
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NULL,
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};
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static const char *imx28_dt_compat[] __initdata = {
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"fsl,imx28-evk",
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"fsl,imx28",
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NULL,
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};
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DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
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.map_io = mx23_map_io,
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.init_irq = mxs_dt_init_irq,
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.timer = &imx23_timer,
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.init_machine = mxs_machine_init,
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.dt_compat = imx23_dt_compat,
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.restart = mxs_restart,
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MACHINE_END
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DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
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.map_io = mx28_map_io,
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.init_irq = mxs_dt_init_irq,
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.timer = &imx28_timer,
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.init_machine = mxs_machine_init,
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.dt_compat = imx28_dt_compat,
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.restart = mxs_restart,
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MACHINE_END
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