MIPS: Alchemy: Improved DB1550 support, with audio and serial busses.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2868/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

5 files changed, 520 insertions, 75 deletions

diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig
index f9a13be..a1b995f 100644
--- a/arch/mips/alchemy/Kconfig
+++ b/arch/mips/alchemy/Kconfig
@@ -71,7 +71,7 @@ config MIPS_DB1550
 	bool "Alchemy DB1550 board"
 	select ALCHEMY_GPIOINT_AU1000
 	select HW_HAS_PCI
-	select DMA_NONCOHERENT
+	select DMA_COHERENT
 	select MIPS_DISABLE_OBSOLETE_IDE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
diff --git a/arch/mips/alchemy/devboards/Makefile b/arch/mips/alchemy/devboards/Makefile
index 2eb75c9..3467ec9 100644
--- a/arch/mips/alchemy/devboards/Makefile
+++ b/arch/mips/alchemy/devboards/Makefile
@@ -13,4 +13,4 @@ obj-$(CONFIG_MIPS_DB1100)	+= db1x00/
 obj-$(CONFIG_MIPS_DB1200)	+= db1200/
 obj-$(CONFIG_MIPS_DB1300)	+= db1300.o
 obj-$(CONFIG_MIPS_DB1500)	+= db1x00/
-obj-$(CONFIG_MIPS_DB1550)	+= db1x00/
+obj-$(CONFIG_MIPS_DB1550)	+= db1550.o
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c
new file mode 100644
index 0000000..a4755b0
--- /dev/null
+++ b/arch/mips/alchemy/devboards/db1550.c
@@ -0,0 +1,506 @@
+/*
+ * Alchemy Db1550 board support
+ *
+ * (c) 2011 Manuel Lauss <manuel.lauss@googlemail.com>
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_eth.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1550_spi.h>
+#include <asm/mach-db1x00/bcsr.h>
+#include <prom.h>
+#include "platform.h"
+
+
+const char *get_system_type(void)
+{
+	return "DB1550";
+}
+
+static void __init db1550_hw_setup(void)
+{
+	void __iomem *base;
+
+	alchemy_gpio_direction_output(203, 0);	/* red led on */
+
+	/* complete SPI setup: link psc0_intclk to a 48MHz source,
+	 * and assign GPIO16 to PSC0_SYNC1 (SPI cs# line)
+	 */
+	base = (void __iomem *)SYS_CLKSRC;
+	__raw_writel(__raw_readl(base) | 0x000001e0, base);
+	base = (void __iomem *)SYS_PINFUNC;
+	__raw_writel(__raw_readl(base) | 1, base);
+	wmb();
+
+	/* reset the AC97 codec now, the reset time in the psc-ac97 driver
+	 * is apparently too short although it's ridiculous as it is.
+	 */
+	base = (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR);
+	__raw_writel(PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE,
+		     base + PSC_SEL_OFFSET);
+	__raw_writel(PSC_CTRL_DISABLE, base + PSC_CTRL_OFFSET);
+	wmb();
+	__raw_writel(PSC_AC97RST_RST, base + PSC_AC97RST_OFFSET);
+	wmb();
+
+	alchemy_gpio_direction_output(202, 0);	/* green led on */
+}
+
+void __init board_setup(void)
+{
+	unsigned short whoami;
+
+	bcsr_init(DB1550_BCSR_PHYS_ADDR,
+		  DB1550_BCSR_PHYS_ADDR + DB1550_BCSR_HEXLED_OFS);
+
+	whoami = bcsr_read(BCSR_WHOAMI);
+	printk(KERN_INFO "Alchemy/AMD DB1550 Board, CPLD Rev %d"
+		"  Board-ID %d  Daughtercard ID %d\n",
+		(whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf);
+
+	db1550_hw_setup();
+}
+
+/*****************************************************************************/
+
+static struct mtd_partition db1550_spiflash_parts[] = {
+	{
+		.name	= "spi_flash",
+		.offset	= 0,
+		.size	= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct flash_platform_data db1550_spiflash_data = {
+	.name		= "s25fl010",
+	.parts		= db1550_spiflash_parts,
+	.nr_parts	= ARRAY_SIZE(db1550_spiflash_parts),
+	.type		= "m25p10",
+};
+
+static struct spi_board_info db1550_spi_devs[] __initdata = {
+	{
+		/* TI TMP121AIDBVR temp sensor */
+		.modalias	= "tmp121",
+		.max_speed_hz	= 2400000,
+		.bus_num	= 0,
+		.chip_select	= 0,
+		.mode		= SPI_MODE_0,
+	},
+	{
+		/* Spansion S25FL001D0FMA SPI flash */
+		.modalias	= "m25p80",
+		.max_speed_hz	= 2400000,
+		.bus_num	= 0,
+		.chip_select	= 1,
+		.mode		= SPI_MODE_0,
+		.platform_data	= &db1550_spiflash_data,
+	},
+};
+
+static struct i2c_board_info db1550_i2c_devs[] __initdata = {
+	{ I2C_BOARD_INFO("24c04",  0x52),}, /* AT24C04-10 I2C eeprom */
+	{ I2C_BOARD_INFO("ne1619", 0x2d),}, /* adm1025-compat hwmon */
+	{ I2C_BOARD_INFO("wm8731", 0x1b),}, /* I2S audio codec WM8731 */
+};
+
+/**********************************************************************/
+
+static void au1550_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
+				 unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	unsigned long ioaddr = (unsigned long)this->IO_ADDR_W;
+
+	ioaddr &= 0xffffff00;
+
+	if (ctrl & NAND_CLE) {
+		ioaddr += MEM_STNAND_CMD;
+	} else if (ctrl & NAND_ALE) {
+		ioaddr += MEM_STNAND_ADDR;
+	} else {
+		/* assume we want to r/w real data  by default */
+		ioaddr += MEM_STNAND_DATA;
+	}
+	this->IO_ADDR_R = this->IO_ADDR_W = (void __iomem *)ioaddr;
+	if (cmd != NAND_CMD_NONE) {
+		__raw_writeb(cmd, this->IO_ADDR_W);
+		wmb();
+	}
+}
+
+static int au1550_nand_device_ready(struct mtd_info *mtd)
+{
+	return __raw_readl((void __iomem *)MEM_STSTAT) & 1;
+}
+
+static const char *db1550_part_probes[] = { "cmdlinepart", NULL };
+
+static struct mtd_partition db1550_nand_parts[] = {
+	{
+		.name	= "NAND FS 0",
+		.offset	= 0,
+		.size	= 8 * 1024 * 1024,
+	},
+	{
+		.name	= "NAND FS 1",
+		.offset	= MTDPART_OFS_APPEND,
+		.size	= MTDPART_SIZ_FULL
+	},
+};
+
+struct platform_nand_data db1550_nand_platdata = {
+	.chip = {
+		.nr_chips	= 1,
+		.chip_offset	= 0,
+		.nr_partitions	= ARRAY_SIZE(db1550_nand_parts),
+		.partitions	= db1550_nand_parts,
+		.chip_delay	= 20,
+		.part_probe_types = db1550_part_probes,
+	},
+	.ctrl = {
+		.dev_ready	= au1550_nand_device_ready,
+		.cmd_ctrl	= au1550_nand_cmd_ctrl,
+	},
+};
+
+static struct resource db1550_nand_res[] = {
+	[0] = {
+		.start	= 0x20000000,
+		.end	= 0x200000ff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device db1550_nand_dev = {
+	.name		= "gen_nand",
+	.num_resources	= ARRAY_SIZE(db1550_nand_res),
+	.resource	= db1550_nand_res,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &db1550_nand_platdata,
+	}
+};
+
+/**********************************************************************/
+
+static struct resource au1550_psc0_res[] = {
+	[0] = {
+		.start	= AU1550_PSC0_PHYS_ADDR,
+		.end	= AU1550_PSC0_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC0_INT,
+		.end	= AU1550_PSC0_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC0_TX,
+		.end	= AU1550_DSCR_CMD0_PSC0_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC0_RX,
+		.end	= AU1550_DSCR_CMD0_PSC0_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static void db1550_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
+{
+	if (cs)
+		bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SPISEL);
+	else
+		bcsr_mod(BCSR_BOARD, BCSR_BOARD_SPISEL, 0);
+}
+
+static struct au1550_spi_info db1550_spi_platdata = {
+	.mainclk_hz	= 48000000,	/* PSC0 clock: max. 2.4MHz SPI clk */
+	.num_chipselect = 2,
+	.activate_cs	= db1550_spi_cs_en,
+};
+
+static u64 spi_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device db1550_spi_dev = {
+	.dev	= {
+		.dma_mask		= &spi_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.platform_data		= &db1550_spi_platdata,
+	},
+	.name		= "au1550-spi",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1550_psc0_res),
+	.resource	= au1550_psc0_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1550_psc1_res[] = {
+	[0] = {
+		.start	= AU1550_PSC1_PHYS_ADDR,
+		.end	= AU1550_PSC1_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC1_INT,
+		.end	= AU1550_PSC1_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC1_TX,
+		.end	= AU1550_DSCR_CMD0_PSC1_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC1_RX,
+		.end	= AU1550_DSCR_CMD0_PSC1_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_ac97_dev = {
+	.name		= "au1xpsc_ac97",
+	.id		= 1,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1550_psc1_res),
+	.resource	= au1550_psc1_res,
+};
+
+
+static struct resource au1550_psc2_res[] = {
+	[0] = {
+		.start	= AU1550_PSC2_PHYS_ADDR,
+		.end	= AU1550_PSC2_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC2_INT,
+		.end	= AU1550_PSC2_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC2_TX,
+		.end	= AU1550_DSCR_CMD0_PSC2_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC2_RX,
+		.end	= AU1550_DSCR_CMD0_PSC2_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_i2c_dev = {
+	.name		= "au1xpsc_smbus",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(au1550_psc2_res),
+	.resource	= au1550_psc2_res,
+};
+
+/**********************************************************************/
+
+static struct resource au1550_psc3_res[] = {
+	[0] = {
+		.start	= AU1550_PSC3_PHYS_ADDR,
+		.end	= AU1550_PSC3_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AU1550_PSC3_INT,
+		.end	= AU1550_PSC3_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= AU1550_DSCR_CMD0_PSC3_TX,
+		.end	= AU1550_DSCR_CMD0_PSC3_TX,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= AU1550_DSCR_CMD0_PSC3_RX,
+		.end	= AU1550_DSCR_CMD0_PSC3_RX,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device db1550_i2s_dev = {
+	.name		= "au1xpsc_i2s",
+	.id		= 3,	/* PSC ID */
+	.num_resources	= ARRAY_SIZE(au1550_psc3_res),
+	.resource	= au1550_psc3_res,
+};
+
+/**********************************************************************/
+
+static struct platform_device db1550_stac_dev = {
+	.name		= "ac97-codec",
+	.id		= 1,	/* on PSC1 */
+};
+
+static struct platform_device db1550_ac97dma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 1,	/* on PSC3 */
+};
+
+static struct platform_device db1550_i2sdma_dev = {
+	.name		= "au1xpsc-pcm",
+	.id		= 3,	/* on PSC3 */
+};
+
+static struct platform_device db1550_sndac97_dev = {
+	.name		= "db1550-ac97",
+};
+
+static struct platform_device db1550_sndi2s_dev = {
+	.name		= "db1550-i2s",
+};
+
+/**********************************************************************/
+
+static struct platform_device db1550_rtc_dev = {
+	.name	= "rtc-au1xxx",
+	.id	= -1,
+};
+
+/**********************************************************************/
+
+static int db1550_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
+{
+	if ((slot < 11) || (slot > 13) || pin == 0)
+		return -1;
+	if (slot == 11)
+		return (pin == 1) ? AU1550_PCI_INTC : 0xff;
+	if (slot == 12) {
+		switch (pin) {
+		case 1: return AU1550_PCI_INTB;
+		case 2: return AU1550_PCI_INTC;
+		case 3: return AU1550_PCI_INTD;
+		case 4: return AU1550_PCI_INTA;
+		}
+	}
+	if (slot == 13) {
+		switch (pin) {
+		case 1: return AU1550_PCI_INTA;
+		case 2: return AU1550_PCI_INTB;
+		case 3: return AU1550_PCI_INTC;
+		case 4: return AU1550_PCI_INTD;
+		}
+	}
+	return -1;
+}
+
+static struct resource alchemy_pci_host_res[] = {
+	[0] = {
+		.start	= AU1500_PCI_PHYS_ADDR,
+		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct alchemy_pci_platdata db1550_pci_pd = {
+	.board_map_irq	= db1550_map_pci_irq,
+};
+
+static struct platform_device db1550_pci_host_dev = {
+	.dev.platform_data = &db1550_pci_pd,
+	.name		= "alchemy-pci",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
+	.resource	= alchemy_pci_host_res,
+};
+
+/**********************************************************************/
+
+static struct platform_device *db1550_devs[] __initdata = {
+	&db1550_rtc_dev,
+	&db1550_nand_dev,
+	&db1550_i2c_dev,
+	&db1550_ac97_dev,
+	&db1550_spi_dev,
+	&db1550_i2s_dev,
+	&db1550_stac_dev,
+	&db1550_ac97dma_dev,
+	&db1550_i2sdma_dev,
+	&db1550_sndac97_dev,
+	&db1550_sndi2s_dev,
+};
+
+/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
+static int __init db1550_pci_init(void)
+{
+	return platform_device_register(&db1550_pci_host_dev);
+}
+arch_initcall(db1550_pci_init);
+
+static int __init db1550_dev_init(void)
+{
+	int swapped;
+
+	irq_set_irq_type(AU1550_GPIO0_INT, IRQ_TYPE_EDGE_BOTH);  /* CD0# */
+	irq_set_irq_type(AU1550_GPIO1_INT, IRQ_TYPE_EDGE_BOTH);  /* CD1# */
+	irq_set_irq_type(AU1550_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);  /* CARD0# */
+	irq_set_irq_type(AU1550_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);  /* CARD1# */
+	irq_set_irq_type(AU1550_GPIO21_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG0# */
+	irq_set_irq_type(AU1550_GPIO22_INT, IRQ_TYPE_LEVEL_LOW); /* STSCHG1# */
+
+	i2c_register_board_info(0, db1550_i2c_devs,
+				ARRAY_SIZE(db1550_i2c_devs));
+	spi_register_board_info(db1550_spi_devs,
+				ARRAY_SIZE(db1550_i2c_devs));
+
+	/* Audio PSC clock is supplied by codecs (PSC1, 3) FIXME: platdata!! */
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	__raw_writel(PSC_SEL_CLK_SERCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC3_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	/* SPI/I2C use internally supplied 50MHz source */
+	__raw_writel(PSC_SEL_CLK_INTCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC0_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+	__raw_writel(PSC_SEL_CLK_INTCLK,
+	    (void __iomem *)KSEG1ADDR(AU1550_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET);
+	wmb();
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
+		AU1550_GPIO3_INT, AU1550_GPIO0_INT,
+		/*AU1550_GPIO21_INT*/0, 0, 0);
+
+	db1x_register_pcmcia_socket(
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
+		AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
+		AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
+		AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
+		AU1550_GPIO5_INT, AU1550_GPIO1_INT,
+		/*AU1550_GPIO22_INT*/0, 0, 1);
+
+	swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT;
+	db1x_register_norflash(128 << 20, 4, swapped);
+
+	return platform_add_devices(db1550_devs, ARRAY_SIZE(db1550_devs));
+}
+device_initcall(db1550_dev_init);
diff --git a/arch/mips/alchemy/devboards/db1x00/board_setup.c b/arch/mips/alchemy/devboards/db1x00/board_setup.c
index 8a222b3..2dbebcb 100644
--- a/arch/mips/alchemy/devboards/db1x00/board_setup.c
+++ b/arch/mips/alchemy/devboards/db1x00/board_setup.c
@@ -48,11 +48,6 @@ const char *get_system_type(void)
 
 void __init board_setup(void)
 {
-	unsigned long bcsr1, bcsr2;
-
-	bcsr1 = DB1000_BCSR_PHYS_ADDR;
-	bcsr2 = DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS;
-
 #ifdef CONFIG_MIPS_DB1000
 	printk(KERN_INFO "AMD Alchemy Au1000/Db1000 Board\n");
 #endif
@@ -62,15 +57,9 @@ void __init board_setup(void)
 #ifdef CONFIG_MIPS_DB1100
 	printk(KERN_INFO "AMD Alchemy Au1100/Db1100 Board\n");
 #endif
-#ifdef CONFIG_MIPS_DB1550
-	printk(KERN_INFO "AMD Alchemy Au1550/Db1550 Board\n");
-
-	bcsr1 = DB1550_BCSR_PHYS_ADDR;
-	bcsr2 = DB1550_BCSR_PHYS_ADDR + DB1550_BCSR_HEXLED_OFS;
-#endif
-
 	/* initialize board register space */
-	bcsr_init(bcsr1, bcsr2);
+	bcsr_init(DB1000_BCSR_PHYS_ADDR,
+		  DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS);
 
 #if defined(CONFIG_IRDA) && defined(CONFIG_AU1000_FIR)
 	{
@@ -92,14 +81,7 @@ void __init board_setup(void)
 
 static int __init db1x00_init_irq(void)
 {
-#if defined(CONFIG_MIPS_DB1550)
-	irq_set_irq_type(AU1550_GPIO0_INT, IRQF_TRIGGER_LOW);  /* CD0# */
-	irq_set_irq_type(AU1550_GPIO1_INT, IRQF_TRIGGER_LOW);  /* CD1# */
-	irq_set_irq_type(AU1550_GPIO3_INT, IRQF_TRIGGER_LOW);  /* CARD0# */
-	irq_set_irq_type(AU1550_GPIO5_INT, IRQF_TRIGGER_LOW);  /* CARD1# */
-	irq_set_irq_type(AU1550_GPIO21_INT, IRQF_TRIGGER_LOW); /* STSCHG0# */
-	irq_set_irq_type(AU1550_GPIO22_INT, IRQF_TRIGGER_LOW); /* STSCHG1# */
-#elif defined(CONFIG_MIPS_DB1500)
+#if defined(CONFIG_MIPS_DB1500)
 	irq_set_irq_type(AU1500_GPIO0_INT, IRQF_TRIGGER_LOW); /* CD0# */
 	irq_set_irq_type(AU1500_GPIO3_INT, IRQF_TRIGGER_LOW); /* CD1# */
 	irq_set_irq_type(AU1500_GPIO2_INT, IRQF_TRIGGER_LOW); /* CARD0# */
diff --git a/arch/mips/alchemy/devboards/db1x00/platform.c b/arch/mips/alchemy/devboards/db1x00/platform.c
index 677414d..67b36e8 100644
--- a/arch/mips/alchemy/devboards/db1x00/platform.c
+++ b/arch/mips/alchemy/devboards/db1x00/platform.c
@@ -34,7 +34,6 @@ struct pci_dev;
  * CD0/1 	GPIO0/3
  * STSCHG0/1	GPIO1/4
  * CARD0/1	GPIO2/5
- * Db1550:	0/1, 21/22, 3/5
  */
 
 #define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT)
@@ -46,7 +45,6 @@ struct pci_dev;
 #define DB1XXX_PCMCIA_CD1	AU1000_GPIO3_INT
 #define DB1XXX_PCMCIA_STSCHG1	AU1000_GPIO4_INT
 #define DB1XXX_PCMCIA_CARD1	AU1000_GPIO5_INT
-#define BOARD_FLASH_SIZE	0x02000000 /* 32MB */
 #elif defined(CONFIG_MIPS_DB1100)
 #define DB1XXX_PCMCIA_CD0	AU1100_GPIO0_INT
 #define DB1XXX_PCMCIA_STSCHG0	AU1100_GPIO1_INT
@@ -54,7 +52,6 @@ struct pci_dev;
 #define DB1XXX_PCMCIA_CD1	AU1100_GPIO3_INT
 #define DB1XXX_PCMCIA_STSCHG1	AU1100_GPIO4_INT
 #define DB1XXX_PCMCIA_CARD1	AU1100_GPIO5_INT
-#define BOARD_FLASH_SIZE	0x02000000 /* 32MB */
 #elif defined(CONFIG_MIPS_DB1500)
 #define DB1XXX_PCMCIA_CD0	AU1500_GPIO0_INT
 #define DB1XXX_PCMCIA_STSCHG0	AU1500_GPIO1_INT
@@ -62,20 +59,8 @@ struct pci_dev;
 #define DB1XXX_PCMCIA_CD1	AU1500_GPIO3_INT
 #define DB1XXX_PCMCIA_STSCHG1	AU1500_GPIO4_INT
 #define DB1XXX_PCMCIA_CARD1	AU1500_GPIO5_INT
-#define BOARD_FLASH_SIZE	0x02000000 /* 32MB */
-#elif defined(CONFIG_MIPS_DB1550)
-#define DB1XXX_PCMCIA_CD0	AU1550_GPIO0_INT
-#define DB1XXX_PCMCIA_STSCHG0	AU1550_GPIO21_INT
-#define DB1XXX_PCMCIA_CARD0	AU1550_GPIO3_INT
-#define DB1XXX_PCMCIA_CD1	AU1550_GPIO1_INT
-#define DB1XXX_PCMCIA_STSCHG1	AU1550_GPIO22_INT
-#define DB1XXX_PCMCIA_CARD1	AU1550_GPIO5_INT
-#define BOARD_FLASH_SIZE	0x08000000 /* 128MB */
-#endif
 
-#ifdef CONFIG_PCI
-#ifdef CONFIG_MIPS_DB1500
-static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
+static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 {
 	if ((slot < 12) || (slot > 13) || pin == 0)
 		return -1;
@@ -91,34 +76,6 @@ static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 	}
 	return -1;
 }
-#endif
-
-#ifdef CONFIG_MIPS_DB1550
-static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
-{
-	if ((slot < 11) || (slot > 13) || pin == 0)
-		return -1;
-	if (slot == 11)
-		return (pin == 1) ? AU1550_PCI_INTC : 0xff;
-	if (slot == 12) {
-		switch (pin) {
-		case 1: return AU1550_PCI_INTB;
-		case 2: return AU1550_PCI_INTC;
-		case 3: return AU1550_PCI_INTD;
-		case 4: return AU1550_PCI_INTA;
-		}
-	}
-	if (slot == 13) {
-		switch (pin) {
-		case 1: return AU1550_PCI_INTA;
-		case 2: return AU1550_PCI_INTB;
-		case 3: return AU1550_PCI_INTC;
-		case 4: return AU1550_PCI_INTD;
-		}
-	}
-	return -1;
-}
-#endif
 
 static struct resource alchemy_pci_host_res[] = {
 	[0] = {
@@ -128,24 +85,24 @@ static struct resource alchemy_pci_host_res[] = {
 	},
 };
 
-static struct alchemy_pci_platdata db1xxx_pci_pd = {
-	.board_map_irq	= db1xxx_map_pci_irq,
+static struct alchemy_pci_platdata db1500_pci_pd = {
+	.board_map_irq	= db1500_map_pci_irq,
 };
 
-static struct platform_device db1xxx_pci_host_dev = {
-	.dev.platform_data = &db1xxx_pci_pd,
+static struct platform_device db1500_pci_host_dev = {
+	.dev.platform_data = &db1500_pci_pd,
 	.name		= "alchemy-pci",
 	.id		= 0,
 	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
 	.resource	= alchemy_pci_host_res,
 };
 
-static int __init db15x0_pci_init(void)
+static int __init db1500_pci_init(void)
 {
-	return platform_device_register(&db1xxx_pci_host_dev);
+	return platform_device_register(&db1500_pci_host_dev);
 }
 /* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
-arch_initcall(db15x0_pci_init);
+arch_initcall(db1500_pci_init);
 #endif
 
 #ifdef CONFIG_MIPS_DB1100
@@ -244,7 +201,7 @@ static int __init db1xxx_dev_init(void)
 	platform_device_register(&alchemy_ac97c_dev);
 	platform_device_register(&db1x00_audio_dev);
 
-	db1x_register_norflash(BOARD_FLASH_SIZE, 4 /* 32bit */, F_SWAPPED);
+	db1x_register_norflash(0x02000000, 4 /* 32bit */, F_SWAPPED);
 	return 0;
 }
 device_initcall(db1xxx_dev_init);