[PATCH 1/3 v3] ARM: shmobile: add R8A7778 basis support
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Thu Mar 21 06:01:36 EDT 2013
Add initial support for the R8A7778 R-Car M1A SoC.
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.
It is based on v1.0 datasheet
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
v2 -> v3
- it used platform_device_register_full()
- removed r8a7778_clock_init() from setup-r8a7778.c
- cleanup code
arch/arm/boot/dts/r8a7778.dtsi | 35 ++++++
arch/arm/mach-shmobile/Kconfig | 6 +
arch/arm/mach-shmobile/Makefile | 1 +
arch/arm/mach-shmobile/clock-r8a7778.c | 91 ++++++++++++++
arch/arm/mach-shmobile/include/mach/r8a7778.h | 28 +++++
arch/arm/mach-shmobile/setup-r8a7778.c | 167 +++++++++++++++++++++++++
6 files changed, 328 insertions(+)
create mode 100644 arch/arm/boot/dts/r8a7778.dtsi
create mode 100644 arch/arm/mach-shmobile/clock-r8a7778.c
create mode 100644 arch/arm/mach-shmobile/include/mach/r8a7778.h
create mode 100644 arch/arm/mach-shmobile/setup-r8a7778.c
diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi
new file mode 100644
index 0000000..4743735
--- /dev/null
+++ b/arch/arm/boot/dts/r8a7778.dtsi
@@ -0,0 +1,35 @@
+/*
+ * Device Tree Source for Renesas r8a7778
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
+ *
+ * based on r8a7779
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Simon Horman
+ *
+ * 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,r8a7778";
+
+ cpus {
+ cpu at 0 {
+ compatible = "arm,cortex-a9";
+ };
+ };
+
+ gic: interrupt-controller at fe438000 {
+ compatible = "arm,cortex-a9-gic";
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ reg = <0xfe438000 0x1000>,
+ <0xfe430000 0x100>;
+ };
+};
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index eb3a7ff..aa273a5 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -24,6 +24,12 @@ config ARCH_R8A7740
select CPU_V7
select SH_CLK_CPG
+config ARCH_R8A7778
+ bool "R-Car M1 (R8A77780)"
+ select CPU_V7
+ select SH_CLK_CPG
+ select ARM_GIC
+
config ARCH_R8A7779
bool "R-Car H1 (R8A77790)"
select ARCH_WANT_OPTIONAL_GPIOLIB
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index c621edf..0f50a3c 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -9,6 +9,7 @@ obj-y := timer.o console.o clock.o
obj-$(CONFIG_ARCH_SH7372) += setup-sh7372.o clock-sh7372.o intc-sh7372.o
obj-$(CONFIG_ARCH_SH73A0) += setup-sh73a0.o clock-sh73a0.o intc-sh73a0.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_EMEV2) += setup-emev2.o clock-emev2.o
diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c b/arch/arm/mach-shmobile/clock-r8a7778.c
new file mode 100644
index 0000000..387e3b7
--- /dev/null
+++ b/arch/arm/mach-shmobile/clock-r8a7778.c
@@ -0,0 +1,91 @@
+/*
+ * r8a7778 clock framework support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
+ *
+ * based on r8a7779
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Copyright (C) 2011 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; either 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/io.h>
+#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
+#include <mach/common.h>
+
+#define MSTPCR0 IOMEM(0xffc80030)
+#define MSTPCR1 IOMEM(0xffc80034)
+#define MSTPCR3 IOMEM(0xffc8003c)
+#define MSTPSR1 IOMEM(0xffc80044)
+#define MSTPSR4 IOMEM(0xffc80048)
+#define MSTPSR6 IOMEM(0xffc8004c)
+#define MSTPCR4 IOMEM(0xffc80050)
+#define MSTPCR5 IOMEM(0xffc80054)
+#define MSTPCR6 IOMEM(0xffc80058)
+
+/* ioremap() through clock mapping mandatory to avoid
+ * collision with ARM coherent DMA virtual memory range.
+ */
+
+static struct clk_mapping cpg_mapping = {
+ .phys = 0xffc80000,
+ .len = 0x80,
+};
+
+static struct clk clkp = {
+ .rate = 62500000, /* FIXME: shortcut */
+ .flags = CLK_ENABLE_ON_INIT,
+ .mapping = &cpg_mapping,
+};
+
+static struct clk *main_clks[] = {
+ &clkp,
+};
+
+enum {
+ MSTP016, MSTP015,
+ MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+ [MSTP016] = SH_CLK_MSTP32(&clkp, MSTPCR0, 16, 0), /* TMU0 */
+ [MSTP015] = SH_CLK_MSTP32(&clkp, MSTPCR0, 15, 0), /* TMU1 */
+};
+
+static struct clk_lookup lookups[] = {
+ /* MSTP32 clocks */
+ CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */
+ CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP015]), /* TMU01 */
+};
+
+void __init r8a7778_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 r8a7778 clocks\n");
+}
diff --git a/arch/arm/mach-shmobile/include/mach/r8a7778.h b/arch/arm/mach-shmobile/include/mach/r8a7778.h
new file mode 100644
index 0000000..a755dca
--- /dev/null
+++ b/arch/arm/mach-shmobile/include/mach/r8a7778.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
+ *
+ * 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
+ */
+#ifndef __ASM_R8A7778_H__
+#define __ASM_R8A7778_H__
+
+extern void r8a7778_add_standard_devices(void);
+extern void r8a7778_add_standard_devices_dt(void);
+extern void r8a7778_init_delay(void);
+extern void r8a7778_init_irq(void);
+extern void r8a7778_init_irq_dt(void);
+extern void r8a7778_clock_init(void);
+
+#endif /* __ASM_R8A7778_H__ */
diff --git a/arch/arm/mach-shmobile/setup-r8a7778.c b/arch/arm/mach-shmobile/setup-r8a7778.c
new file mode 100644
index 0000000..811ccf3
--- /dev/null
+++ b/arch/arm/mach-shmobile/setup-r8a7778.c
@@ -0,0 +1,167 @@
+/*
+ * r8a7778 processor support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
+ *
+ * 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/kernel.h>
+#include <linux/io.h>
+#include <linux/irqchip/arm-gic.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/irqchip.h>
+#include <linux/sh_timer.h>
+#include <mach/irqs.h>
+#include <mach/r8a7778.h>
+#include <mach/common.h>
+#include <asm/mach/arch.h>
+#include <asm/hardware/cache-l2x0.h>
+
+/* TMU */
+static struct resource sh_tmu0_resources[] = {
+ DEFINE_RES_MEM(0xffd80008, 12),
+ DEFINE_RES_IRQ(gic_iid(0x40)),
+};
+
+static struct sh_timer_config sh_tmu0_platform_data = {
+ .name = "TMU00",
+ .channel_offset = 0x4,
+ .timer_bit = 0,
+ .clockevent_rating = 200,
+};
+
+static struct resource sh_tmu1_resources[] = {
+ DEFINE_RES_MEM(0xffd80014, 12),
+ DEFINE_RES_IRQ(gic_iid(0x41)),
+};
+
+static struct sh_timer_config sh_tmu1_platform_data = {
+ .name = "TMU01",
+ .channel_offset = 0x10,
+ .timer_bit = 1,
+ .clocksource_rating = 200,
+};
+
+#define PLATFORM_INFO(n, i) \
+{ \
+ .parent = &platform_bus, \
+ .name = #n, \
+ .id = i, \
+ .res = n ## i ## _resources, \
+ .num_res = ARRAY_SIZE(n ## i ##_resources), \
+ .data = &n ## i ##_platform_data, \
+ .size_data = sizeof(n ## i ## _platform_data), \
+}
+
+struct platform_device_info platform_devinfo[] = {
+ PLATFORM_INFO(sh_tmu, 0),
+ PLATFORM_INFO(sh_tmu, 1),
+};
+
+void __init r8a7778_add_standard_devices(void)
+{
+ int i;
+
+#ifdef CONFIG_CACHE_L2X0
+ void __iomem *base = ioremap_nocache(0xf0100000, 0x1000);
+ if (base) {
+ /*
+ * Early BRESP enable, Shared attribute override enable, 64K*16way
+ * don't call iounmap(base)
+ */
+ l2x0_init(base, 0x40470000, 0x82000fff);
+ }
+#endif
+
+ for (i = 0; i < ARRAY_SIZE(platform_devinfo); i++)
+ platform_device_register_full(&platform_devinfo[i]);
+}
+
+#define INT2SMSKCR0 0x82288 /* 0xfe782288 */
+#define INT2SMSKCR1 0x8228c /* 0xfe78228c */
+
+#define INT2NTSR0 0x00018 /* 0xfe700018 */
+#define INT2NTSR1 0x0002c /* 0xfe70002c */
+static void __init r8a7778_init_irq_common(void)
+{
+ void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
+
+ BUG_ON(!base);
+
+ /* route all interrupts to ARM */
+ __raw_writel(0x73ffffff, base + INT2NTSR0);
+ __raw_writel(0xffffffff, base + INT2NTSR1);
+
+ /* unmask all known interrupts in INTCS2 */
+ __raw_writel(0x08330773, base + INT2SMSKCR0);
+ __raw_writel(0x00311110, base + INT2SMSKCR1);
+
+ iounmap(base);
+}
+
+void __init r8a7778_init_irq(void)
+{
+ void __iomem *gic_dist_base;
+ void __iomem *gic_cpu_base;
+
+ gic_dist_base = ioremap_nocache(0xfe438000, PAGE_SIZE);
+ gic_cpu_base = ioremap_nocache(0xfe430000, PAGE_SIZE);
+ BUG_ON(!gic_dist_base || !gic_cpu_base);
+
+ /* use GIC to handle interrupts */
+ gic_init(0, 29, gic_dist_base, gic_cpu_base);
+
+ r8a7778_init_irq_common();
+}
+
+void __init r8a7778_init_delay(void)
+{
+ shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */
+}
+
+#ifdef CONFIG_USE_OF
+void __init r8a7778_init_irq_dt(void)
+{
+ irqchip_init();
+ r8a7778_init_irq_common();
+}
+
+static const struct of_dev_auxdata r8a7778_auxdata_lookup[] __initconst = {
+ {},
+};
+
+void __init r8a7778_add_standard_devices_dt(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table,
+ r8a7778_auxdata_lookup, NULL);
+}
+
+static const char *r8a7778_compat_dt[] __initdata = {
+ "renesas,r8a7778",
+ NULL,
+};
+
+DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
+ .init_early = r8a7778_init_delay,
+ .init_irq = r8a7778_init_irq_dt,
+ .init_machine = r8a7778_add_standard_devices_dt,
+ .init_time = shmobile_timer_init,
+ .dt_compat = r8a7778_compat_dt,
+MACHINE_END
+
+#endif /* CONFIG_USE_OF */
--
1.7.9.5
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