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ARC: [TB10x] Add support for TB10x platform

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Infrastructure required to make the Linux kernel compile and boot on the
Abilis Systems TB10x series of SOCs based on ARC700 CPUs:
  - Kmake related files (Kconfig, Makefile, tb10x_defconfig)
  - TB10x platform initialisation

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Christian Ruppert
2013-04-12 08:40:59 +02:00
committed by Vineet Gupta
parent 2eb9504bcc
commit 072eb69390
7 changed files with 257 additions and 0 deletions
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36
arch/arc/plat-tb10x/Kconfig Normal file
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# Abilis Systems TB10x platform kernel configuration file
#
# Author: Christian Ruppert <christian.ruppert@abilis.com>
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
menuconfig ARC_PLAT_TB10X
bool "Abilis TB10x"
select COMMON_CLK
select PINCTRL
select PINMUX
select ARCH_REQUIRE_GPIOLIB
help
Support for platforms based on the TB10x home media gateway SOC by
Abilis Systems. TB10x is based on the ARC700 CPU architecture.
Say Y if you are building a kernel for one of the SOCs in this
series (e.g. TB100 or TB101). If in doubt say N.
if ARC_PLAT_TB10X
config GENERIC_GPIO
def_bool y
endif

21
arch/arc/plat-tb10x/Makefile Normal file
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# Abilis Systems TB10x platform Makefile
#
# Author: Christian Ruppert <christian.ruppert@abilis.com>
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
KBUILD_CFLAGS += -Iarch/arc/plat-tb10x/include
obj-y += tb10x.o

71
arch/arc/plat-tb10x/tb10x.c Normal file
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/*
* Abilis Systems TB10x platform initialisation
*
* Copyright (C) Abilis Systems 2012
*
* Author: Christian Ruppert <christian.ruppert@abilis.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
#include <linux/pinctrl/consumer.h>
#include <asm/mach_desc.h>
static void __init tb10x_platform_init(void)
{
of_clk_init(NULL);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static void __init tb10x_platform_late_init(void)
{
struct device_node *dn;
/*
* Pinctrl documentation recommends setting up the iomux here for
* all modules which don't require control over the pins themselves.
* Modules which need this kind of assistance are compatible with
* "abilis,simple-pinctrl", i.e. we can easily iterate over them.
* TODO: Does this recommended method work cleanly with pins required
* by modules?
*/
for_each_compatible_node(dn, NULL, "abilis,simple-pinctrl") {
struct platform_device *pd = of_find_device_by_node(dn);
struct pinctrl *pctl;
pctl = pinctrl_get_select(&pd->dev, "abilis,simple-default");
if (IS_ERR(pctl)) {
int ret = PTR_ERR(pctl);
dev_err(&pd->dev, "Could not set up pinctrl: %d\n",
ret);
}
}
}
static const char *tb10x_compat[] __initdata = {
"abilis,arc-tb10x",
NULL,
};
MACHINE_START(TB10x, "tb10x")
.dt_compat = tb10x_compat,
.init_machine = tb10x_platform_init,
.init_late = tb10x_platform_late_init,
MACHINE_END