ARM: shmobile: Initial r8a7790 SoC support

Add initial support for the r8a7790 SoC including:
 - Single Cortex-A15 CPU Core
 - GIC
 - Architecture timer

No static virtual mappings are used, all the components
make use of ioremap(). DT_MACHINE_START is still wrapped
in CONFIG_USE_OF to match other mach-shmobile code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
new file mode 100644 (file)
index 0000000..1c58ffb
--- /dev/null
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -0,0 +1,54 @@
+/*
+ * Device Tree Source for the r8a7790 SoC
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+       compatible = "renesas,r8a7790";
+       interrupt-parent = <&gic>;
+
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               cpu0: cpu@0 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a15";
+                       reg = <0>;
+                       clock-frequency = <1300000000>;
+               };
+       };
+
+       gic: interrupt-controller@f1001000 {
+               compatible = "arm,cortex-a15-gic";
+               #interrupt-cells = <3>;
+               #address-cells = <0>;
+               interrupt-controller;
+               reg = <0xf1001000 0x1000>,
+                       <0xf1002000 0x1000>,
+                       <0xf1004000 0x2000>,
+                       <0xf1006000 0x2000>;
+               interrupts = <1 9 0xf04>;
+
+               gic-cpuif@4 {
+                       compatible = "arm,gic-cpuif";
+                       cpuif-id = <4>;
+                       cpu = <&cpu0>;
+               };
+       };
+
+       timer {
+               compatible = "arm,armv7-timer";
+               interrupts = <1 13 0xf08>,
+                               <1 14 0xf08>,
+                               <1 11 0xf08>,
+                               <1 10 0xf08>;
+       };
+};

diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index d569c34..749dfb4 100644 (file)
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -51,6 +51,13 @@ config ARCH_R8A7779
        select USB_ARCH_HAS_OHCI
        select RENESAS_INTC_IRQPIN
 
+config ARCH_R8A7790
+       bool "R-Car H2 (R8A77900)"
+       select ARM_GIC
+       select CPU_V7
+       select ARM_ARCH_TIMER
+       select SH_CLK_CPG
+
 config ARCH_EMEV2
        bool "Emma Mobile EV2"
        select ARCH_WANT_OPTIONAL_GPIOLIB

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 2d42de4..709b9b4 100644 (file)
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_ARCH_R8A73A4)    += setup-r8a73a4.o clock-r8a73a4.o
 obj-$(CONFIG_ARCH_R8A7740)     += setup-r8a7740.o clock-r8a7740.o intc-r8a7740.o
 obj-$(CONFIG_ARCH_R8A7778)     += setup-r8a7778.o clock-r8a7778.o
 obj-$(CONFIG_ARCH_R8A7779)     += setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o
+obj-$(CONFIG_ARCH_R8A7790)     += setup-r8a7790.o clock-r8a7790.o
 obj-$(CONFIG_ARCH_EMEV2)       += setup-emev2.o clock-emev2.o
 
 # SMP objects

diff --git a/arch/arm/mach-shmobile/clock-r8a7790.c b/arch/arm/mach-shmobile/clock-r8a7790.c
new file mode 100644 (file)
index 0000000..6869798
--- /dev/null
+++ b/arch/arm/mach-shmobile/clock-r8a7790.c
@@ -0,0 +1,61 @@
+/*
+ * r8a7790 clock framework support
+ *
+ * Copyright (C) 2013  Renesas Solutions Corp.
+ * Copyright (C) 2013  Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
+#include <mach/common.h>
+
+#define CPG_BASE 0xe6150000
+#define CPG_LEN 0x1000
+
+static struct clk_mapping cpg_mapping = {
+       .phys   = CPG_BASE,
+       .len    = CPG_LEN,
+};
+
+static struct clk *main_clks[] = {
+};
+
+enum { MSTP_NR };
+static struct clk mstp_clks[MSTP_NR] = {
+};
+
+static struct clk_lookup lookups[] = {
+};
+
+void __init r8a7790_clock_init(void)
+{
+       int k, ret = 0;
+
+       for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
+               ret = clk_register(main_clks[k]);
+
+       if (!ret)
+               ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
+
+       clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+       if (!ret)
+               shmobile_clk_init();
+       else
+               panic("failed to setup r8a7790 clocks\n");
+}

diff --git a/arch/arm/mach-shmobile/include/mach/r8a7790.h b/arch/arm/mach-shmobile/include/mach/r8a7790.h
new file mode 100644 (file)
index 0000000..f38ded6
--- /dev/null
+++ b/arch/arm/mach-shmobile/include/mach/r8a7790.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_R8A7790_H__
+#define __ASM_R8A7790_H__
+
+void r8a7790_add_standard_devices(void);
+void r8a7790_clock_init(void);
+
+#endif /* __ASM_R8A7790_H__ */

diff --git a/arch/arm/mach-shmobile/setup-r8a7790.c b/arch/arm/mach-shmobile/setup-r8a7790.c
new file mode 100644 (file)
index 0000000..af432ba
--- /dev/null
+++ b/arch/arm/mach-shmobile/setup-r8a7790.c
@@ -0,0 +1,51 @@
+/*
+ * r8a7790 processor support
+ *
+ * Copyright (C) 2013  Renesas Solutions Corp.
+ * Copyright (C) 2013  Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/kernel.h>
+#include <linux/of_platform.h>
+#include <mach/common.h>
+#include <mach/irqs.h>
+#include <mach/r8a7790.h>
+#include <asm/mach/arch.h>
+
+void __init r8a7790_add_standard_devices(void)
+{
+}
+
+#ifdef CONFIG_USE_OF
+void __init r8a7790_add_standard_devices_dt(void)
+{
+       of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *r8a7790_boards_compat_dt[] __initdata = {
+       "renesas,r8a7790",
+       NULL,
+};
+
+DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
+       .init_irq       = irqchip_init,
+       .init_machine   = r8a7790_add_standard_devices_dt,
+       .init_time      = shmobile_timer_init,
+       .dt_compat      = r8a7790_boards_compat_dt,
+MACHINE_END
+#endif /* CONFIG_USE_OF */