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authorChristian Ruppert <christian.ruppert@abilis.com>2013-04-12 08:40:59 +0200
committerVineet Gupta <vgupta@synopsys.com>2013-05-07 13:43:59 +0530
commit072eb693904a52df95ac3d8e8ee00752ed82342c (patch)
tree4b411af0a97d82526b5a4619f3e5e10c0524df03 /arch/arc/plat-tb10x
parent2eb9504bcc1f164ac137cd12c5deeb1e21cc6b1b (diff)
downloadlinux-072eb693904a52df95ac3d8e8ee00752ed82342c.tar.bz2
ARC: [TB10x] Add support for TB10x platform
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>
Diffstat (limited to 'arch/arc/plat-tb10x')
-rw-r--r--arch/arc/plat-tb10x/Kconfig36
-rw-r--r--arch/arc/plat-tb10x/Makefile21
-rw-r--r--arch/arc/plat-tb10x/tb10x.c71
3 files changed, 128 insertions, 0 deletions
diff --git a/arch/arc/plat-tb10x/Kconfig b/arch/arc/plat-tb10x/Kconfig
new file mode 100644
index 000000000000..4e121272c4e5
--- /dev/null
+++ b/arch/arc/plat-tb10x/Kconfig
@@ -0,0 +1,36 @@
+# 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
diff --git a/arch/arc/plat-tb10x/Makefile b/arch/arc/plat-tb10x/Makefile
new file mode 100644
index 000000000000..89611d25ef35
--- /dev/null
+++ b/arch/arc/plat-tb10x/Makefile
@@ -0,0 +1,21 @@
+# 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
diff --git a/arch/arc/plat-tb10x/tb10x.c b/arch/arc/plat-tb10x/tb10x.c
new file mode 100644
index 000000000000..d3567691c7e1
--- /dev/null
+++ b/arch/arc/plat-tb10x/tb10x.c
@@ -0,0 +1,71 @@
+/*
+ * 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