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Message-ID: <1423063323-19419-33-git-send-email-Zubair.Kakakhel@imgtec.com>
Date: Wed, 4 Feb 2015 15:22:01 +0000
From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To: <linux-mips@...ux-mips.org>
CC: <devicetree@...r.kernel.org>, <linux-serial@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <Zubair.Kakakhel@...tec.com>,
<gregkh@...uxfoundation.org>, <mturquette@...aro.org>,
<sboyd@...eaurora.org>, <ralf@...ux-mips.org>, <jslaby@...e.cz>,
<tglx@...utronix.de>, <jason@...edaemon.net>, <lars@...afoo.de>,
<paul.burton@...tec.com>
Subject: [PATCH_V2 32/34] MIPS: initial Ingenic jz4780 support
From: Paul Burton <paul.burton@...tec.com>
Support the Ingenic jz4780 SoC using the code under arch/mips/jz4740 now
that it has been generalised sufficiently. This is left unselectable in
Kconfig until a jz4780 based board is added in a later commit.
Signed-off-by: Paul Burton <paul.burton@...tec.com>
Cc: Lars-Peter Clausen <lars@...afoo.de>
---
arch/mips/Kconfig | 16 +++++
arch/mips/boot/dts/jz4780.dtsi | 101 +++++++++++++++++++++++++++++
arch/mips/include/asm/mach-jz4740/irq.h | 5 ++
arch/mips/include/asm/mach-jz4740/serial.h | 8 ++-
arch/mips/jz4740/Makefile | 4 +-
arch/mips/jz4740/Platform | 4 ++
arch/mips/jz4740/time.c | 7 +-
7 files changed, 142 insertions(+), 3 deletions(-)
create mode 100644 arch/mips/boot/dts/jz4780.dtsi
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 622d0aa..296bafb 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -291,6 +291,22 @@ config MACH_JZ4740
select USE_OF
select LIBFDT
+config MACH_JZ4780
+ bool
+ select SYS_HAS_CPU_MIPS32_R2
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_SUPPORTS_LITTLE_ENDIAN
+ select SYS_SUPPORTS_ZBOOT_UART16550
+ select DMA_NONCOHERENT
+ select IRQ_CPU
+ select ARCH_REQUIRE_GPIOLIB
+ select COMMON_CLK
+ select GENERIC_IRQ_CHIP
+ select BUILTIN_DTB
+ select USE_OF
+ select LIBFDT
+ select MIPS_CPU_SCACHE
+
config LANTIQ
bool "Lantiq based platforms"
select DMA_NONCOHERENT
diff --git a/arch/mips/boot/dts/jz4780.dtsi b/arch/mips/boot/dts/jz4780.dtsi
new file mode 100644
index 0000000..d9b696f
--- /dev/null
+++ b/arch/mips/boot/dts/jz4780.dtsi
@@ -0,0 +1,101 @@
+#include <dt-bindings/clock/jz4780-cgu.h>
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "ingenic,jz4780";
+
+ cpuintc: cpuintc@0 {
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "mti,cpu-interrupt-controller";
+ };
+
+ intc: intc@...01000 {
+ compatible = "ingenic,jz4780-intc";
+ reg = <0x10001000 0x50>;
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ interrupt-parent = <&cpuintc>;
+ interrupts = <2>;
+ };
+
+ ext: ext {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ };
+
+ rtc: rtc {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+
+ cgu: jz4780-cgu@...00000 {
+ compatible = "ingenic,jz4780-cgu";
+ reg = <0x10000000 0x100>;
+
+ clocks = <&ext>, <&rtc>;
+ clock-names = "ext", "rtc";
+
+ #clock-cells = <1>;
+ };
+
+ uart0: serial@...30000 {
+ compatible = "ingenic,jz4780-uart";
+ reg = <0x10030000 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <51>;
+
+ clocks = <&ext>, <&cgu JZ4780_CLK_UART0>;
+ clock-names = "baud", "module";
+ };
+
+ uart1: serial@...31000 {
+ compatible = "ingenic,jz4780-uart";
+ reg = <0x10031000 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <50>;
+
+ clocks = <&ext>, <&cgu JZ4780_CLK_UART1>;
+ clock-names = "baud", "module";
+ };
+
+ uart2: serial@...32000 {
+ compatible = "ingenic,jz4780-uart";
+ reg = <0x10032000 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <49>;
+
+ clocks = <&ext>, <&cgu JZ4780_CLK_UART2>;
+ clock-names = "baud", "module";
+ };
+
+ uart3: serial@...33000 {
+ compatible = "ingenic,jz4780-uart";
+ reg = <0x10033000 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <48>;
+
+ clocks = <&ext>, <&cgu JZ4780_CLK_UART3>;
+ clock-names = "baud", "module";
+ };
+
+ uart4: serial@...34000 {
+ compatible = "ingenic,jz4780-uart";
+ reg = <0x10034000 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <34>;
+
+ clocks = <&ext>, <&cgu JZ4780_CLK_UART4>;
+ clock-names = "baud", "module";
+ };
+};
diff --git a/arch/mips/include/asm/mach-jz4740/irq.h b/arch/mips/include/asm/mach-jz4740/irq.h
index b218f76..7e4ec21 100644
--- a/arch/mips/include/asm/mach-jz4740/irq.h
+++ b/arch/mips/include/asm/mach-jz4740/irq.h
@@ -22,6 +22,9 @@
#ifdef CONFIG_MACH_JZ4740
# define NR_INTC_IRQS 32
#endif
+#ifdef CONFIG_MACH_JZ4780
+# define NR_INTC_IRQS 64
+#endif
/* 1st-level interrupts */
#define JZ4740_IRQ(x) (JZ4740_IRQ_BASE + (x))
@@ -48,6 +51,8 @@
#define JZ4740_IRQ_IPU JZ4740_IRQ(29)
#define JZ4740_IRQ_LCD JZ4740_IRQ(30)
+#define JZ4780_IRQ_TCU2 JZ4740_IRQ(25)
+
/* 2nd-level interrupts */
#define JZ4740_IRQ_DMA(x) (JZ4740_IRQ(NR_INTC_IRQS) + (x))
diff --git a/arch/mips/include/asm/mach-jz4740/serial.h b/arch/mips/include/asm/mach-jz4740/serial.h
index 9f93563..5001d34 100644
--- a/arch/mips/include/asm/mach-jz4740/serial.h
+++ b/arch/mips/include/asm/mach-jz4740/serial.h
@@ -16,6 +16,12 @@
#ifndef __JZ4740_SERIAL_H__
#define __JZ4740_SERIAL_H__
-#define BASE_BAUD (12000000 / 16)
+#ifdef CONFIG_MACH_JZ4740
+# define BASE_BAUD (12000000 / 16)
+#endif
+
+#ifdef CONFIG_MACH_JZ4780
+# define BASE_BAUD (48000000 / 16)
+#endif
#endif /* __JZ4740_SERIAL_H__ */
diff --git a/arch/mips/jz4740/Makefile b/arch/mips/jz4740/Makefile
index ae72346..03e9f0a 100644
--- a/arch/mips/jz4740/Makefile
+++ b/arch/mips/jz4740/Makefile
@@ -5,7 +5,9 @@
# Object file lists.
obj-y += prom.o irq.o time.o reset.o setup.o \
- gpio.o platform.o timer.o
+ platform.o timer.o
+
+obj-$(CONFIG_MACH_JZ4740) += gpio.o
CFLAGS_setup.o = -I$(src)/../../../scripts/dtc/libfdt
diff --git a/arch/mips/jz4740/Platform b/arch/mips/jz4740/Platform
index ba91be9..ad1b443 100644
--- a/arch/mips/jz4740/Platform
+++ b/arch/mips/jz4740/Platform
@@ -1,3 +1,7 @@
platform-$(CONFIG_MACH_JZ4740) += jz4740/
cflags-$(CONFIG_MACH_JZ4740) += -I$(srctree)/arch/mips/include/asm/mach-jz4740
load-$(CONFIG_MACH_JZ4740) += 0xffffffff80010000
+
+platform-$(CONFIG_MACH_JZ4780) += jz4740/
+cflags-$(CONFIG_MACH_JZ4780) += -I$(srctree)/arch/mips/include/asm/mach-jz4740
+load-$(CONFIG_MACH_JZ4780) += 0xffffffff80010000
diff --git a/arch/mips/jz4740/time.c b/arch/mips/jz4740/time.c
index 121ec3a..e4e440d 100644
--- a/arch/mips/jz4740/time.c
+++ b/arch/mips/jz4740/time.c
@@ -96,7 +96,12 @@ static struct clock_event_device jz4740_clockevent = {
.set_next_event = jz4740_clockevent_set_next,
.set_mode = jz4740_clockevent_set_mode,
.rating = 200,
+#ifdef CONFIG_MACH_JZ4740
.irq = JZ4740_IRQ_TCU0,
+#endif
+#ifdef CONFIG_MACH_JZ4780
+ .irq = JZ4780_IRQ_TCU2,
+#endif
};
static struct irqaction timer_irqaction = {
@@ -136,7 +141,7 @@ void __init plat_time_init(void)
if (ret)
printk(KERN_ERR "Failed to register clocksource: %d\n", ret);
- setup_irq(JZ4740_IRQ_TCU0, &timer_irqaction);
+ setup_irq(jz4740_clockevent.irq, &timer_irqaction);
ctrl = JZ_TIMER_CTRL_PRESCALE_16 | JZ_TIMER_CTRL_SRC_EXT;
--
1.9.1
--
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