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275cc1d4fc
GPIOs can be provided by the pinctrl subsystem, which can be initialised by DT. Therefore DT has to be parsed before requesting GPIOs. Also non-DT pinmux has to be configured early. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
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* KZM-A9-GT board support - Reference Device Tree Implementation
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*
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* Copyright (C) 2012 Horms Solutions Ltd.
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*
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* Based on board-kzm9g.c
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* Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/irqchip.h>
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#include <linux/input.h>
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#include <linux/of_platform.h>
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#include <linux/pinctrl/machine.h>
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#include <mach/sh73a0.h>
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#include <mach/common.h>
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#include <asm/hardware/cache-l2x0.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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static const struct pinctrl_map kzm_pinctrl_map[] = {
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PIN_MAP_MUX_GROUP_DEFAULT("i2c-sh_mobile.3", "pfc-sh73a0",
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"i2c3_1", "i2c3"),
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PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.4", "pfc-sh73a0",
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"scifa4_data", "scifa4"),
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PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.4", "pfc-sh73a0",
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"scifa4_ctrl", "scifa4"),
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};
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static void __init kzm_init(void)
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{
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sh73a0_add_standard_devices_dt();
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pinctrl_register_mappings(kzm_pinctrl_map, ARRAY_SIZE(kzm_pinctrl_map));
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sh73a0_pinmux_init();
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#ifdef CONFIG_CACHE_L2X0
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/* Early BRESP enable, Shared attribute override enable, 64K*8way */
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l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);
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#endif
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}
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static void kzm9g_restart(char mode, const char *cmd)
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{
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#define RESCNT2 IOMEM(0xe6188020)
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/* Do soft power on reset */
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writel((1 << 31), RESCNT2);
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}
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static const char *kzm9g_boards_compat_dt[] __initdata = {
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"renesas,kzm9g-reference",
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NULL,
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};
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/* Please note that the clock initialisation shcheme used in
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* sh73a0_add_early_devices_dt() and sh73a0_add_standard_devices_dt()
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* does not work with SMP as there is a yet to be resolved lock-up in
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* workqueue initialisation.
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*
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* CONFIG_SMP should be disabled when using this code.
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*/
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DT_MACHINE_START(KZM9G_DT, "kzm9g-reference")
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.smp = smp_ops(sh73a0_smp_ops),
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.map_io = sh73a0_map_io,
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.init_early = sh73a0_init_delay,
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.nr_irqs = NR_IRQS_LEGACY,
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.init_irq = irqchip_init,
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.init_machine = kzm_init,
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.init_late = shmobile_init_late,
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.init_time = shmobile_timer_init,
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.restart = kzm9g_restart,
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.dt_compat = kzm9g_boards_compat_dt,
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MACHINE_END
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