sh: Add support for SH7723 CPU subtype.

This adds basic support for the SH7723 MobileR2 CPU.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 files changed, 389 insertions, 32 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index df2e2f99b90..6a679c3e15e 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -276,6 +276,15 @@ config CPU_SUBTYPE_SH4_202
 
 # SH-4A Processor Support
 
+config CPU_SUBTYPE_SH7723
+	bool "Support SH7723 processor"
+	select CPU_SH4A
+	select CPU_SHX2
+	select ARCH_SPARSEMEM_ENABLE
+	select SYS_SUPPORTS_NUMA
+	help
+	  Select SH7723 if you have an SH-MobileR2 CPU.
+
 config CPU_SUBTYPE_SH7763
 	bool "Support SH7763 processor"
 	select CPU_SH4A
@@ -600,7 +609,7 @@ config SH_PCLK_FREQ
 	default "27000000" if CPU_SUBTYPE_SH7343
 	default "31250000" if CPU_SUBTYPE_SH7619
 	default "32000000" if CPU_SUBTYPE_SH7722
-	default "33333333" if CPU_SUBTYPE_SH7770 || \
+	default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
 			      CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
 			      CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
 			      CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index 9e89984c4f1..c478b16dbf4 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -126,17 +126,22 @@ int __init detect_cpu_and_cache_system(void)
 					  CPU_HAS_LLSC;
 		break;
 	case 0x3008:
-		if (prr == 0xa0 || prr == 0xa1) {
-			boot_cpu_data.type = CPU_SH7722;
-			boot_cpu_data.icache.ways = 4;
-			boot_cpu_data.dcache.ways = 4;
-			boot_cpu_data.flags |= CPU_HAS_LLSC;
-		}
-		else if (prr == 0x70) {
+		boot_cpu_data.icache.ways = 4;
+		boot_cpu_data.dcache.ways = 4;
+		boot_cpu_data.flags |= CPU_HAS_LLSC;
+
+		switch (prr) {
+		case 0x50:
+			boot_cpu_data.type = CPU_SH7723;
+			boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_L2_CACHE;
+			break;
+		case 0x70:
 			boot_cpu_data.type = CPU_SH7366;
-			boot_cpu_data.icache.ways = 4;
-			boot_cpu_data.dcache.ways = 4;
-			boot_cpu_data.flags |= CPU_HAS_LLSC;
+			break;
+		case 0xa0:
+		case 0xa1:
+			boot_cpu_data.type = CPU_SH7722;
+			break;
 		}
 		break;
 	case 0x4000:	/* 1st cut */
diff --git a/arch/sh/kernel/cpu/sh4a/Makefile b/arch/sh/kernel/cpu/sh4a/Makefile
index 5d890ac8e79..a880e796875 100644
--- a/arch/sh/kernel/cpu/sh4a/Makefile
+++ b/arch/sh/kernel/cpu/sh4a/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7780)	+= setup-sh7780.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7785)	+= setup-sh7785.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7343)	+= setup-sh7343.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7722)	+= setup-sh7722.o
+obj-$(CONFIG_CPU_SUBTYPE_SH7723)	+= setup-sh7723.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7366)	+= setup-sh7366.o
 obj-$(CONFIG_CPU_SUBTYPE_SHX3)		+= setup-shx3.o
 
@@ -22,6 +23,7 @@ clock-$(CONFIG_CPU_SUBTYPE_SH7780)	:= clock-sh7780.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7785)	:= clock-sh7785.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7343)	:= clock-sh7343.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7722)	:= clock-sh7722.o
+clock-$(CONFIG_CPU_SUBTYPE_SH7723)	:= clock-sh7722.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7366)	:= clock-sh7722.o
 clock-$(CONFIG_CPU_SUBTYPE_SHX3)	:= clock-shx3.o
 
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
new file mode 100644
index 00000000000..16925cf28db
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
@@ -0,0 +1,300 @@
+/*
+ * SH7723 Setup
+ *
+ *  Copyright (C) 2008  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/mm.h>
+#include <linux/serial_sci.h>
+#include <asm/mmzone.h>
+
+static struct plat_sci_port sci_platform_data[] = {
+	{
+		.mapbase	= 0xa4e30000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCI,
+		.irqs		= { 56, 56, 56, 56 },
+	},{
+		.mapbase	= 0xa4e40000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCI,
+		.irqs		= { 88, 88, 88, 88 },
+	},{
+		.mapbase	= 0xa4e50000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCI,
+		.irqs		= { 109, 109, 109, 109 },
+	}, {
+		.flags = 0,
+	}
+};
+
+static struct platform_device sci_device = {
+	.name		= "sh-sci",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= sci_platform_data,
+	},
+};
+
+static struct resource rtc_resources[] = {
+	[0] = {
+		.start	= 0xa465fec0,
+		.end	= 0xa465fec0 + 0x58 - 1,
+		.flags	= IORESOURCE_IO,
+	},
+	[1] = {
+		/* Period IRQ */
+		.start	= 69,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		/* Carry IRQ */
+		.start	= 70,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[3] = {
+		/* Alarm IRQ */
+		.start	= 68,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device rtc_device = {
+	.name		= "sh-rtc",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(rtc_resources),
+	.resource	= rtc_resources,
+};
+
+static struct platform_device *sh7723_devices[] __initdata = {
+	&sci_device,
+	&rtc_device,
+};
+
+static int __init sh7723_devices_setup(void)
+{
+	return platform_add_devices(sh7723_devices,
+				    ARRAY_SIZE(sh7723_devices));
+}
+__initcall(sh7723_devices_setup);
+
+enum {
+	UNUSED=0,
+
+	/* interrupt sources */
+	IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7,
+	HUDI,
+	DMAC1A_DEI0,DMAC1A_DEI1,DMAC1A_DEI2,DMAC1A_DEI3,
+	_2DG_TRI,_2DG_INI,_2DG_CEI,
+	DMAC0A_DEI0,DMAC0A_DEI1,DMAC0A_DEI2,DMAC0A_DEI3,
+	VIO_CEUI,VIO_BEUI,VIO_VEU2HI,VIO_VOUI,
+	SCIFA_SCIFA0,
+	VPU_VPUI,
+	TPU_TPUI,
+	ADC_ADI,
+	USB_USI0,
+	RTC_ATI,RTC_PRI,RTC_CUI,
+	DMAC1B_DEI4,DMAC1B_DEI5,DMAC1B_DADERR,
+	DMAC0B_DEI4,DMAC0B_DEI5,DMAC0B_DADERR,
+	KEYSC_KEYI,
+	SCIF_SCIF0,SCIF_SCIF1,SCIF_SCIF2,
+	MSIOF_MSIOFI0,MSIOF_MSIOFI1,
+	SCIFA_SCIFA1,
+	FLCTL_FLSTEI,FLCTL_FLTENDI,FLCTL_FLTREQ0I,FLCTL_FLTREQ1I,
+	I2C_ALI,I2C_TACKI,I2C_WAITI,I2C_DTEI,
+	SDHI0_SDHII0,SDHI0_SDHII1,SDHI0_SDHII2,
+	CMT_CMTI,
+	TSIF_TSIFI,
+	SIU_SIUI,
+	SCIFA_SCIFA2,
+	TMU0_TUNI0, TMU0_TUNI1, TMU0_TUNI2,
+	IRDA_IRDAI,
+	ATAPI_ATAPII,
+	SDHI1_SDHII0,SDHI1_SDHII1,SDHI1_SDHII2,
+	VEU2H1_VEU2HI,
+	LCDC_LCDCI,
+	TMU1_TUNI0,TMU1_TUNI1,TMU1_TUNI2,
+
+	/* interrupt groups */
+	DMAC1A, DMAC0A, VIO, DMAC0B, FLCTL, I2C, _2DG,
+	SDHI1, RTC, DMAC1B, SDHI0,
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
+	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
+	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+	INTC_VECT(IRQ6, 0x6c0), INTC_VECT(IRQ7, 0x6e0),
+
+	INTC_VECT(DMAC1A_DEI0,0x700),
+	INTC_VECT(DMAC1A_DEI1,0x720),
+	INTC_VECT(DMAC1A_DEI2,0x740),
+	INTC_VECT(DMAC1A_DEI3,0x760),
+
+	INTC_VECT(_2DG_TRI, 0x780),
+	INTC_VECT(_2DG_INI, 0x7A0),
+	INTC_VECT(_2DG_CEI, 0x7C0),
+
+	INTC_VECT(DMAC0A_DEI0,0x800),
+	INTC_VECT(DMAC0A_DEI1,0x820),
+	INTC_VECT(DMAC0A_DEI2,0x840),
+	INTC_VECT(DMAC0A_DEI3,0x860),
+
+	INTC_VECT(VIO_CEUI,0x880),
+	INTC_VECT(VIO_BEUI,0x8A0),
+	INTC_VECT(VIO_VEU2HI,0x8C0),
+	INTC_VECT(VIO_VOUI,0x8E0),
+
+	INTC_VECT(SCIFA_SCIFA0,0x900),
+	INTC_VECT(VPU_VPUI,0x920),
+	INTC_VECT(TPU_TPUI,0x9A0),
+	INTC_VECT(ADC_ADI,0x9E0),
+	INTC_VECT(USB_USI0,0xA20),
+
+	INTC_VECT(RTC_ATI,0xA80),
+	INTC_VECT(RTC_PRI,0xAA0),
+	INTC_VECT(RTC_CUI,0xAC0),
+
+	INTC_VECT(DMAC1B_DEI4,0xB00),
+	INTC_VECT(DMAC1B_DEI5,0xB20),
+	INTC_VECT(DMAC1B_DADERR,0xB40),
+
+	INTC_VECT(DMAC0B_DEI4,0xB80),
+	INTC_VECT(DMAC0B_DEI5,0xBA0),
+	INTC_VECT(DMAC0B_DADERR,0xBC0),
+
+	INTC_VECT(KEYSC_KEYI,0xBE0),
+	INTC_VECT(SCIF_SCIF0,0xC00),
+	INTC_VECT(SCIF_SCIF1,0xC20),
+	INTC_VECT(SCIF_SCIF2,0xC40),
+	INTC_VECT(MSIOF_MSIOFI0,0xC80),
+	INTC_VECT(MSIOF_MSIOFI1,0xCA0),
+	INTC_VECT(SCIFA_SCIFA1,0xD00),
+
+	INTC_VECT(FLCTL_FLSTEI,0xD80),
+	INTC_VECT(FLCTL_FLTENDI,0xDA0),
+	INTC_VECT(FLCTL_FLTREQ0I,0xDC0),
+	INTC_VECT(FLCTL_FLTREQ1I,0xDE0),
+
+	INTC_VECT(I2C_ALI,0xE00),
+	INTC_VECT(I2C_TACKI,0xE20),
+	INTC_VECT(I2C_WAITI,0xE40),
+	INTC_VECT(I2C_DTEI,0xE60),
+
+	INTC_VECT(SDHI0_SDHII0,0xE80),
+	INTC_VECT(SDHI0_SDHII1,0xEA0),
+	INTC_VECT(SDHI0_SDHII2,0xEC0),
+
+	INTC_VECT(CMT_CMTI,0xF00),
+	INTC_VECT(TSIF_TSIFI,0xF20),
+	INTC_VECT(SIU_SIUI,0xF80),
+	INTC_VECT(SCIFA_SCIFA2,0xFA0),
+
+	INTC_VECT(TMU0_TUNI0,0x400),
+	INTC_VECT(TMU0_TUNI1,0x420),
+	INTC_VECT(TMU0_TUNI2,0x440),
+
+	INTC_VECT(IRDA_IRDAI,0x480),
+	INTC_VECT(ATAPI_ATAPII,0x4A0),
+
+	INTC_VECT(SDHI1_SDHII0,0x4E0),
+	INTC_VECT(SDHI1_SDHII1,0x500),
+	INTC_VECT(SDHI1_SDHII2,0x520),
+
+	INTC_VECT(VEU2H1_VEU2HI,0x560),
+	INTC_VECT(LCDC_LCDCI,0x580),
+
+	INTC_VECT(TMU1_TUNI0,0x920),
+	INTC_VECT(TMU1_TUNI1,0x940),
+	INTC_VECT(TMU1_TUNI2,0x960),
+
+};
+
+static struct intc_group groups[] __initdata = {
+	INTC_GROUP(DMAC1A,DMAC1A_DEI0,DMAC1A_DEI1,DMAC1A_DEI2,DMAC1A_DEI3),
+	INTC_GROUP(DMAC0A,DMAC0A_DEI0,DMAC0A_DEI1,DMAC0A_DEI2,DMAC0A_DEI3),
+	INTC_GROUP(VIO, VIO_CEUI,VIO_BEUI,VIO_VEU2HI,VIO_VOUI),
+	INTC_GROUP(DMAC0B, DMAC0B_DEI4,DMAC0B_DEI5,DMAC0B_DADERR),
+	INTC_GROUP(FLCTL,FLCTL_FLSTEI,FLCTL_FLTENDI,FLCTL_FLTREQ0I,FLCTL_FLTREQ1I),
+	INTC_GROUP(I2C,I2C_ALI,I2C_TACKI,I2C_WAITI,I2C_DTEI),
+	INTC_GROUP(_2DG, _2DG_TRI,_2DG_INI,_2DG_CEI),
+	INTC_GROUP(SDHI1, SDHI1_SDHII0,SDHI1_SDHII1,SDHI1_SDHII2),
+	INTC_GROUP(RTC, RTC_ATI,RTC_PRI,RTC_CUI),
+	INTC_GROUP(DMAC1B, DMAC1B_DEI4,DMAC1B_DEI5,DMAC1B_DADERR),
+	INTC_GROUP(SDHI0,SDHI0_SDHII0,SDHI0_SDHII1,SDHI0_SDHII2),
+};
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+	{ 0xa4080080, 0xa40800c0, 8, /* IMR0 / IMCR0 */
+	  { 0,  TMU1_TUNI2,TMU1_TUNI1,TMU1_TUNI0,0,SDHI1_SDHII2,SDHI1_SDHII1,SDHI1_SDHII0} },
+	{ 0xa4080084, 0xa40800c4, 8, /* IMR1 / IMCR1 */
+	  { VIO_VOUI, VIO_VEU2HI,VIO_BEUI,VIO_CEUI,DMAC0A_DEI3,DMAC0A_DEI2,DMAC0A_DEI1,DMAC0A_DEI0 } },
+	{ 0xa4080088, 0xa40800c8, 8, /* IMR2 / IMCR2 */
+	  { 0, 0, 0, VPU_VPUI,0,0,0,SCIFA_SCIFA0 } },
+	{ 0xa408008c, 0xa40800cc, 8, /* IMR3 / IMCR3 */
+	  { DMAC1A_DEI3,DMAC1A_DEI2,DMAC1A_DEI1,DMAC1A_DEI0,0,0,0,IRDA_IRDAI } },
+	{ 0xa4080090, 0xa40800d0, 8, /* IMR4 / IMCR4 */
+	  { 0,TMU0_TUNI2,TMU0_TUNI1,TMU0_TUNI0,VEU2H1_VEU2HI,0,0,LCDC_LCDCI } },
+	{ 0xa4080094, 0xa40800d4, 8, /* IMR5 / IMCR5 */
+	  { KEYSC_KEYI,DMAC0B_DADERR,DMAC0B_DEI5,DMAC0B_DEI4,0,SCIF_SCIF2,SCIF_SCIF1,SCIF_SCIF0 } },
+	{ 0xa4080098, 0xa40800d8, 8, /* IMR6 / IMCR6 */
+	  { 0,0,0,SCIFA_SCIFA1,ADC_ADI,0,MSIOF_MSIOFI1,MSIOF_MSIOFI0 } },
+	{ 0xa408009c, 0xa40800dc, 8, /* IMR7 / IMCR7 */
+	  { I2C_DTEI, I2C_WAITI, I2C_TACKI, I2C_ALI,
+	    FLCTL_FLTREQ1I, FLCTL_FLTREQ0I, FLCTL_FLTENDI, FLCTL_FLSTEI } },
+	{ 0xa40800a0, 0xa40800e0, 8, /* IMR8 / IMCR8 */
+	  { 0,SDHI0_SDHII2,SDHI0_SDHII1,SDHI0_SDHII0,0,0,SCIFA_SCIFA2,SIU_SIUI } },
+	{ 0xa40800a4, 0xa40800e4, 8, /* IMR9 / IMCR9 */
+	  { 0, 0, 0, CMT_CMTI, 0, 0, USB_USI0,0 } },
+	{ 0xa40800a8, 0xa40800e8, 8, /* IMR10 / IMCR10 */
+	  { 0, DMAC1B_DADERR,DMAC1B_DEI5,DMAC1B_DEI4,0,RTC_ATI,RTC_PRI,RTC_CUI } },
+	{ 0xa40800ac, 0xa40800ec, 8, /* IMR11 / IMCR11 */
+	  { 0,_2DG_CEI,_2DG_INI,_2DG_TRI,0,TPU_TPUI,0,TSIF_TSIFI } },
+	{ 0xa40800b0, 0xa40800f0, 8, /* IMR12 / IMCR12 */
+	  { 0,0,0,0,0,0,0,ATAPI_ATAPII } },
+	{ 0xa4140044, 0xa4140064, 8, /* INTMSK00 / INTMSKCLR00 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static struct intc_prio_reg prio_registers[] __initdata = {
+	{ 0xa4080000, 0, 16, 4, /* IPRA */ { TMU0_TUNI0, TMU0_TUNI1, TMU0_TUNI2, IRDA_IRDAI } },
+	{ 0xa4080004, 0, 16, 4, /* IPRB */ { VEU2H1_VEU2HI, LCDC_LCDCI, DMAC1A, 0} },
+	{ 0xa4080008, 0, 16, 4, /* IPRC */ { TMU1_TUNI0, TMU1_TUNI1, TMU1_TUNI2, 0} },
+	{ 0xa408000c, 0, 16, 4, /* IPRD */ { } },
+	{ 0xa4080010, 0, 16, 4, /* IPRE */ { DMAC0A, VIO, SCIFA_SCIFA0, VPU_VPUI } },
+	{ 0xa4080014, 0, 16, 4, /* IPRF */ { KEYSC_KEYI, DMAC0B, USB_USI0, CMT_CMTI } },
+	{ 0xa4080018, 0, 16, 4, /* IPRG */ { SCIF_SCIF0, SCIF_SCIF1, SCIF_SCIF2,0 } },
+	{ 0xa408001c, 0, 16, 4, /* IPRH */ { MSIOF_MSIOFI0,MSIOF_MSIOFI1, FLCTL, I2C } },
+	{ 0xa4080020, 0, 16, 4, /* IPRI */ { SCIFA_SCIFA1,0,TSIF_TSIFI,_2DG } },
+	{ 0xa4080024, 0, 16, 4, /* IPRJ */ { ADC_ADI,0,SIU_SIUI,SDHI1 } },
+	{ 0xa4080028, 0, 16, 4, /* IPRK */ { RTC,DMAC1B,0,SDHI0 } },
+	{ 0xa408002c, 0, 16, 4, /* IPRL */ { SCIFA_SCIFA2,0,TPU_TPUI,ATAPI_ATAPII } },
+	{ 0xa4140010, 0, 32, 4, /* INTPRI00 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static struct intc_sense_reg sense_registers[] __initdata = {
+	{ 0xa414001c, 16, 2, /* ICR1 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7723", vectors, groups,
+			 mask_registers, prio_registers, sense_registers);
+
+void __init plat_irq_setup(void)
+{
+	register_intc_controller(&intc_desc);
+}
+
+void __init plat_mem_setup(void)
+{
+	/* Register the URAM space as Node 1 */
+	setup_bootmem_node(1, 0x055f0000, 0x05610000);
+}
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 0ee776888c6..284f66f1ebb 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -335,7 +335,7 @@ static const char *cpu_name[] = {
 	[CPU_SH7343]	= "SH7343",	[CPU_SH7785]	= "SH7785",
 	[CPU_SH7722]	= "SH7722",	[CPU_SHX3]	= "SH-X3",
 	[CPU_SH5_101]	= "SH5-101",	[CPU_SH5_103]	= "SH5-103",
-	[CPU_MXG]	= "MX-G",
+	[CPU_MXG]	= "MX-G",	[CPU_SH7723]	= "SH7723",
 	[CPU_SH7366]	= "SH7366",	[CPU_SH_NONE]	= "Unknown"
 };
 
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index eff593080d4..c2ea5d4df44 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -333,7 +333,6 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
 	}
 	sci_out(port, SCFCR, fcr_val);
 }
-
 #elif defined(CONFIG_CPU_SH3)
 /* For SH7705, SH7706, SH7707, SH7709, SH7709A, SH7729 */
 static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
@@ -384,6 +383,12 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
 
 	sci_out(port, SCFCR, fcr_val);
 }
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
+{
+	/* Nothing to do here.. */
+	sci_out(port, SCFCR, 0);
+}
 #else
 /* For SH7750 */
 static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 01a9dd715f5..fa8700a968f 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -1,20 +1,5 @@
-/* $Id: sh-sci.h,v 1.4 2004/02/19 16:43:56 lethal Exp $
- *
- *  linux/drivers/serial/sh-sci.h
- *
- *  SuperH on-chip serial module support.  (SCI with no FIFO / with FIFO)
- *  Copyright (C) 1999, 2000  Niibe Yutaka
- *  Copyright (C) 2000  Greg Banks
- *  Copyright (C) 2002, 2003  Paul Mundt
- *  Modified to support multiple serial ports. Stuart Menefy (May 2000).
- *  Modified to support SH7300(SH-Mobile) SCIF. Takashi Kusuda (Jun 2003).
- *  Modified to support H8/300 Series Yoshinori Sato (Feb 2004).
- *  Removed SH7300 support (Jul 2007).
- *  Modified to support SH7720 SCIF. Markus Brunner, Mark Jonas (Aug 2007).
- */
 #include <linux/serial_core.h>
 #include <asm/io.h>
-
 #include <asm/gpio.h>
 
 #if defined(CONFIG_H83007) || defined(CONFIG_H83068)
@@ -102,6 +87,15 @@
 # define SCSPTR0		SCPDR0
 # define SCIF_ORER		0x0001  /* overrun error bit */
 # define SCSCR_INIT(port)	0x0038  /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+# define SCSPTR0                0xa4050160
+# define SCSPTR1                0xa405013e
+# define SCSPTR2                0xa4050160
+# define SCSPTR3                0xa405013e
+# define SCSPTR4                0xa4050128
+# define SCSPTR5                0xa4050128
+# define SCIF_ORER              0x0001  /* overrun error bit */
+# define SCSCR_INIT(port)       0x0038  /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 # define SCIF_ONLY
 #elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
 # define SCSPTR2 0xffe80020 /* 16 bit SCIF */
@@ -395,6 +389,11 @@
                  h8_sci_offset, h8_sci_size) \
   CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+        #define SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scif_offset, sh4_scif_size) \
+                CPU_SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scif_offset, sh4_scif_size)
+        #define SCIF_FNS(name, sh4_scif_offset, sh4_scif_size) \
+                CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
 #else
 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
 		 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
@@ -419,6 +418,18 @@ SCIF_FNS(SCFDR,  0x1c, 16)
 SCIF_FNS(SCxTDR, 0x20,  8)
 SCIF_FNS(SCxRDR, 0x24,  8)
 SCIF_FNS(SCLSR,  0x24, 16)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+SCIx_FNS(SCSMR,  0x00, 16, 0x00, 16)
+SCIx_FNS(SCBRR,  0x04,  8, 0x04,  8)
+SCIx_FNS(SCSCR,  0x08, 16, 0x08, 16)
+SCIx_FNS(SCxTDR, 0x20,  8, 0x0c,  8)
+SCIx_FNS(SCxSR,  0x14, 16, 0x10, 16)
+SCIx_FNS(SCxRDR, 0x24,  8, 0x14,  8)
+SCIF_FNS(SCTDSR, 0x0c,  8)
+SCIF_FNS(SCFER,  0x10, 16)
+SCIF_FNS(SCFCR,  0x18, 16)
+SCIF_FNS(SCFDR,  0x1c, 16)
+SCIF_FNS(SCLSR,  0x24, 16)
 #else
 /*      reg      SCI/SH3   SCI/SH4  SCIF/SH3   SCIF/SH4  SCI/H8*/
 /*      name     off  sz   off  sz   off  sz   off  sz   off  sz*/
@@ -589,6 +600,23 @@ static inline int sci_rxd_in(struct uart_port *port)
 		return ctrl_inb(SCPDR0) & 0x0001 ? 1 : 0; /* SCIF0 */
 	return 1;
 }
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+        if (port->mapbase == 0xffe00000)
+                return ctrl_inb(SCSPTR0) & 0x0008 ? 1 : 0; /* SCIF0 */
+        if (port->mapbase == 0xffe10000)
+                return ctrl_inb(SCSPTR1) & 0x0020 ? 1 : 0; /* SCIF1 */
+        if (port->mapbase == 0xffe20000)
+                return ctrl_inb(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF2 */
+        if (port->mapbase == 0xa4e30000)
+                return ctrl_inb(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF3 */
+        if (port->mapbase == 0xa4e40000)
+                return ctrl_inb(SCSPTR4) & 0x0001 ? 1 : 0; /* SCIF4 */
+        if (port->mapbase == 0xa4e50000)
+                return ctrl_inb(SCSPTR5) & 0x0008 ? 1 : 0; /* SCIF5 */
+        return 1;
+}
 #elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
 static inline int sci_rxd_in(struct uart_port *port)
 {
@@ -727,6 +755,8 @@ static inline int sci_rxd_in(struct uart_port *port)
       defined(CONFIG_CPU_SUBTYPE_SH7720) || \
       defined(CONFIG_CPU_SUBTYPE_SH7721)
 #define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(16*bps)-1)
 #elif defined(__H8300H__) || defined(__H8300S__)
 #define SCBRR_VALUE(bps) (((CONFIG_CPU_CLOCK*1000/32)/bps)-1)
 #elif defined(CONFIG_SUPERH64)
diff --git a/include/asm-sh/cpu-sh4/freq.h b/include/asm-sh/cpu-sh4/freq.h
index ec028c64921..da46e67ae26 100644
--- a/include/asm-sh/cpu-sh4/freq.h
+++ b/include/asm-sh/cpu-sh4/freq.h
@@ -10,14 +10,14 @@
 #ifndef __ASM_CPU_SH4_FREQ_H
 #define __ASM_CPU_SH4_FREQ_H
 
-#if defined(CONFIG_CPU_SUBTYPE_SH7722) || defined(CONFIG_CPU_SUBTYPE_SH7366)
+#if defined(CONFIG_CPU_SUBTYPE_SH7722) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7723) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7366)
 #define FRQCR		        0xa4150000
 #define VCLKCR			0xa4150004
 #define SCLKACR			0xa4150008
 #define SCLKBCR			0xa415000c
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
 #define IrDACLKCR		0xa4150010
-#endif
 #elif defined(CONFIG_CPU_SUBTYPE_SH7763) || \
       defined(CONFIG_CPU_SUBTYPE_SH7780)
 #define	FRQCR			0xffc80000
diff --git a/include/asm-sh/cpu-sh4/rtc.h b/include/asm-sh/cpu-sh4/rtc.h
index f3d0f53275e..25b1e6adfe8 100644
--- a/include/asm-sh/cpu-sh4/rtc.h
+++ b/include/asm-sh/cpu-sh4/rtc.h
@@ -1,7 +1,12 @@
 #ifndef __ASM_SH_CPU_SH4_RTC_H
 #define __ASM_SH_CPU_SH4_RTC_H
 
+#ifdef CONFIG_CPU_SUBTYPE_SH7723
+#define rtc_reg_size		sizeof(u16)
+#else
 #define rtc_reg_size		sizeof(u32)
+#endif
+
 #define RTC_BIT_INVERTED	0x40	/* bug on SH7750, SH7750S */
 #define RTC_DEF_CAPABILITIES	RTC_CAP_4_DIGIT_YEAR
 
diff --git a/include/asm-sh/processor.h b/include/asm-sh/processor.h
index f1b3a81191d..b7c7ce80f03 100644
--- a/include/asm-sh/processor.h
+++ b/include/asm-sh/processor.h
@@ -29,7 +29,8 @@ enum cpu_type {
 	CPU_SH7760, CPU_SH4_202, CPU_SH4_501,
 
 	/* SH-4A types */
-	CPU_SH7763, CPU_SH7770, CPU_SH7780, CPU_SH7781, CPU_SH7785, CPU_SHX3,
+	CPU_SH7763, CPU_SH7770, CPU_SH7780, CPU_SH7781, CPU_SH7785,
+	CPU_SH7723, CPU_SHX3,
 
 	/* SH4AL-DSP types */
 	CPU_SH7343, CPU_SH7722, CPU_SH7366,