Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for 3.17.  It contains:

   - misc Cavium Octeon, BCM47xx, BCM63xx and Alchemy  updates
   - MIPS ptrace updates and cleanups
   - various fixes that will also go to -stable
   - a number of cleanups and small non-critical fixes.
   - NUMA support for the Loongson 3.
   - more support for MSA
   - support for MAAR
   - various FP enhancements and fixes"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (139 commits)
  MIPS: jz4740: remove unnecessary null test before debugfs_remove
  MIPS: Octeon: remove unnecessary null test before debugfs_remove_recursive
  MIPS: ZBOOT: implement stack protector in compressed boot phase
  MIPS: mipsreg: remove duplicate MIPS_CONF4_FTLBSETS_SHIFT
  MIPS: Bonito64: remove a duplicate define
  MIPS: Malta: initialise MAARs
  MIPS: Initialise MAARs
  MIPS: detect presence of MAARs
  MIPS: define MAAR register accessors & bits
  MIPS: mark MSA experimental
  MIPS: Don't build MSA support unless it can be used
  MIPS: consistently clear MSA flags when starting & copying threads
  MIPS: 16 byte align MSA vector context
  MIPS: disable preemption whilst initialising MSA
  MIPS: ensure MSA gets disabled during boot
  MIPS: fix read_msa_* & write_msa_* functions on non-MSA toolchains
  MIPS: fix MSA context for tasks which don't use FP first
  MIPS: init upper 64b of vector registers when MSA is first used
  MIPS: save/disable MSA in lose_fpu
  MIPS: preserve scalar FP CSR when switching vector context
  ...

11 files changed, 444 insertions, 253 deletions

diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c
index d4add8621944..9fa177206032 100644
--- a/drivers/cpufreq/loongson2_cpufreq.c
+++ b/drivers/cpufreq/loongson2_cpufreq.c
@@ -148,9 +148,9 @@ static void loongson2_cpu_wait(void)
 	u32 cpu_freq;
 
 	spin_lock_irqsave(&loongson2_wait_lock, flags);
-	cpu_freq = LOONGSON_CHIPCFG0;
-	LOONGSON_CHIPCFG0 &= ~0x7;	/* Put CPU into wait mode */
-	LOONGSON_CHIPCFG0 = cpu_freq;	/* Restore CPU state */
+	cpu_freq = LOONGSON_CHIPCFG(0);
+	LOONGSON_CHIPCFG(0) &= ~0x7;	/* Put CPU into wait mode */
+	LOONGSON_CHIPCFG(0) = cpu_freq;	/* Restore CPU state */
 	spin_unlock_irqrestore(&loongson2_wait_lock, flags);
 	local_irq_enable();
 }
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index f5443a6c4915..9c9f6af29251 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -32,6 +32,7 @@
  * (the low to high transition will not occur).
  */
 
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
@@ -90,7 +91,7 @@ struct au1xmmc_host {
 	struct mmc_request *mrq;
 
 	u32 flags;
-	u32 iobase;
+	void __iomem *iobase;
 	u32 clock;
 	u32 bus_width;
 	u32 power_mode;
@@ -118,6 +119,7 @@ struct au1xmmc_host {
 	struct au1xmmc_platform_data *platdata;
 	struct platform_device *pdev;
 	struct resource *ioarea;
+	struct clk *clk;
 };
 
 /* Status flags used by the host structure */
@@ -162,32 +164,33 @@ static inline int has_dbdma(void)
 
 static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
 {
-	u32 val = au_readl(HOST_CONFIG(host));
+	u32 val = __raw_readl(HOST_CONFIG(host));
 	val |= mask;
-	au_writel(val, HOST_CONFIG(host));
-	au_sync();
+	__raw_writel(val, HOST_CONFIG(host));
+	wmb(); /* drain writebuffer */
 }
 
 static inline void FLUSH_FIFO(struct au1xmmc_host *host)
 {
-	u32 val = au_readl(HOST_CONFIG2(host));
+	u32 val = __raw_readl(HOST_CONFIG2(host));
 
-	au_writel(val | SD_CONFIG2_FF, HOST_CONFIG2(host));
-	au_sync_delay(1);
+	__raw_writel(val | SD_CONFIG2_FF, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
+	mdelay(1);
 
 	/* SEND_STOP will turn off clock control - this re-enables it */
 	val &= ~SD_CONFIG2_DF;
 
-	au_writel(val, HOST_CONFIG2(host));
-	au_sync();
+	__raw_writel(val, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 }
 
 static inline void IRQ_OFF(struct au1xmmc_host *host, u32 mask)
 {
-	u32 val = au_readl(HOST_CONFIG(host));
+	u32 val = __raw_readl(HOST_CONFIG(host));
 	val &= ~mask;
-	au_writel(val, HOST_CONFIG(host));
-	au_sync();
+	__raw_writel(val, HOST_CONFIG(host));
+	wmb(); /* drain writebuffer */
 }
 
 static inline void SEND_STOP(struct au1xmmc_host *host)
@@ -197,12 +200,13 @@ static inline void SEND_STOP(struct au1xmmc_host *host)
 	WARN_ON(host->status != HOST_S_DATA);
 	host->status = HOST_S_STOP;
 
-	config2 = au_readl(HOST_CONFIG2(host));
-	au_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host));
-	au_sync();
+	config2 = __raw_readl(HOST_CONFIG2(host));
+	__raw_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 
 	/* Send the stop command */
-	au_writel(STOP_CMD, HOST_CMD(host));
+	__raw_writel(STOP_CMD, HOST_CMD(host));
+	wmb(); /* drain writebuffer */
 }
 
 static void au1xmmc_set_power(struct au1xmmc_host *host, int state)
@@ -296,28 +300,28 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
 		}
 	}
 
-	au_writel(cmd->arg, HOST_CMDARG(host));
-	au_sync();
+	__raw_writel(cmd->arg, HOST_CMDARG(host));
+	wmb(); /* drain writebuffer */
 
 	if (wait)
 		IRQ_OFF(host, SD_CONFIG_CR);
 
-	au_writel((mmccmd | SD_CMD_GO), HOST_CMD(host));
-	au_sync();
+	__raw_writel((mmccmd | SD_CMD_GO), HOST_CMD(host));
+	wmb(); /* drain writebuffer */
 
 	/* Wait for the command to go on the line */
-	while (au_readl(HOST_CMD(host)) & SD_CMD_GO)
+	while (__raw_readl(HOST_CMD(host)) & SD_CMD_GO)
 		/* nop */;
 
 	/* Wait for the command to come back */
 	if (wait) {
-		u32 status = au_readl(HOST_STATUS(host));
+		u32 status = __raw_readl(HOST_STATUS(host));
 
 		while (!(status & SD_STATUS_CR))
-			status = au_readl(HOST_STATUS(host));
+			status = __raw_readl(HOST_STATUS(host));
 
 		/* Clear the CR status */
-		au_writel(SD_STATUS_CR, HOST_STATUS(host));
+		__raw_writel(SD_STATUS_CR, HOST_STATUS(host));
 
 		IRQ_ON(host, SD_CONFIG_CR);
 	}
@@ -339,11 +343,11 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 	data = mrq->cmd->data;
 
 	if (status == 0)
-		status = au_readl(HOST_STATUS(host));
+		status = __raw_readl(HOST_STATUS(host));
 
 	/* The transaction is really over when the SD_STATUS_DB bit is clear */
 	while ((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
-		status = au_readl(HOST_STATUS(host));
+		status = __raw_readl(HOST_STATUS(host));
 
 	data->error = 0;
 	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir);
@@ -357,7 +361,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 		data->error = -EILSEQ;
 
 	/* Clear the CRC bits */
-	au_writel(SD_STATUS_WC | SD_STATUS_RC, HOST_STATUS(host));
+	__raw_writel(SD_STATUS_WC | SD_STATUS_RC, HOST_STATUS(host));
 
 	data->bytes_xfered = 0;
 
@@ -380,7 +384,7 @@ static void au1xmmc_tasklet_data(unsigned long param)
 {
 	struct au1xmmc_host *host = (struct au1xmmc_host *)param;
 
-	u32 status = au_readl(HOST_STATUS(host));
+	u32 status = __raw_readl(HOST_STATUS(host));
 	au1xmmc_data_complete(host, status);
 }
 
@@ -412,15 +416,15 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 		max = AU1XMMC_MAX_TRANSFER;
 
 	for (count = 0; count < max; count++) {
-		status = au_readl(HOST_STATUS(host));
+		status = __raw_readl(HOST_STATUS(host));
 
 		if (!(status & SD_STATUS_TH))
 			break;
 
 		val = *sg_ptr++;
 
-		au_writel((unsigned long)val, HOST_TXPORT(host));
-		au_sync();
+		__raw_writel((unsigned long)val, HOST_TXPORT(host));
+		wmb(); /* drain writebuffer */
 	}
 
 	host->pio.len -= count;
@@ -472,7 +476,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 		max = AU1XMMC_MAX_TRANSFER;
 
 	for (count = 0; count < max; count++) {
-		status = au_readl(HOST_STATUS(host));
+		status = __raw_readl(HOST_STATUS(host));
 
 		if (!(status & SD_STATUS_NE))
 			break;
@@ -494,7 +498,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 			break;
 		}
 
-		val = au_readl(HOST_RXPORT(host));
+		val = __raw_readl(HOST_RXPORT(host));
 
 		if (sg_ptr)
 			*sg_ptr++ = (unsigned char)(val & 0xFF);
@@ -537,10 +541,10 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 	if (cmd->flags & MMC_RSP_PRESENT) {
 		if (cmd->flags & MMC_RSP_136) {
-			r[0] = au_readl(host->iobase + SD_RESP3);
-			r[1] = au_readl(host->iobase + SD_RESP2);
-			r[2] = au_readl(host->iobase + SD_RESP1);
-			r[3] = au_readl(host->iobase + SD_RESP0);
+			r[0] = __raw_readl(host->iobase + SD_RESP3);
+			r[1] = __raw_readl(host->iobase + SD_RESP2);
+			r[2] = __raw_readl(host->iobase + SD_RESP1);
+			r[3] = __raw_readl(host->iobase + SD_RESP0);
 
 			/* The CRC is omitted from the response, so really
 			 * we only got 120 bytes, but the engine expects
@@ -559,7 +563,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 			 * that means that the OSR data starts at bit 31,
 			 * so we can just read RESP0 and return that.
 			 */
-			cmd->resp[0] = au_readl(host->iobase + SD_RESP0);
+			cmd->resp[0] = __raw_readl(host->iobase + SD_RESP0);
 		}
 	}
 
@@ -586,7 +590,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 			u32 mask = SD_STATUS_DB | SD_STATUS_NE;
 
 			while((status & mask) != mask)
-				status = au_readl(HOST_STATUS(host));
+				status = __raw_readl(HOST_STATUS(host));
 		}
 
 		au1xxx_dbdma_start(channel);
@@ -595,24 +599,17 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
 {
-	unsigned int pbus = get_au1x00_speed();
-	unsigned int divisor;
+	unsigned int pbus = clk_get_rate(host->clk);
+	unsigned int divisor = ((pbus / rate) / 2) - 1;
 	u32 config;
 
-	/* From databook:
-	 * divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
-	 */
-	pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2);
-	pbus /= 2;
-	divisor = ((pbus / rate) / 2) - 1;
-
-	config = au_readl(HOST_CONFIG(host));
+	config = __raw_readl(HOST_CONFIG(host));
 
 	config &= ~(SD_CONFIG_DIV);
 	config |= (divisor & SD_CONFIG_DIV) | SD_CONFIG_DE;
 
-	au_writel(config, HOST_CONFIG(host));
-	au_sync();
+	__raw_writel(config, HOST_CONFIG(host));
+	wmb(); /* drain writebuffer */
 }
 
 static int au1xmmc_prepare_data(struct au1xmmc_host *host,
@@ -636,7 +633,7 @@ static int au1xmmc_prepare_data(struct au1xmmc_host *host,
 	if (host->dma.len == 0)
 		return -ETIMEDOUT;
 
-	au_writel(data->blksz - 1, HOST_BLKSIZE(host));
+	__raw_writel(data->blksz - 1, HOST_BLKSIZE(host));
 
 	if (host->flags & (HOST_F_DMA | HOST_F_DBDMA)) {
 		int i;
@@ -723,31 +720,34 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 {
 	/* Apply the clock */
-	au_writel(SD_ENABLE_CE, HOST_ENABLE(host));
-        au_sync_delay(1);
+	__raw_writel(SD_ENABLE_CE, HOST_ENABLE(host));
+	wmb(); /* drain writebuffer */
+	mdelay(1);
 
-	au_writel(SD_ENABLE_R | SD_ENABLE_CE, HOST_ENABLE(host));
-	au_sync_delay(5);
+	__raw_writel(SD_ENABLE_R | SD_ENABLE_CE, HOST_ENABLE(host));
+	wmb(); /* drain writebuffer */
+	mdelay(5);
 
-	au_writel(~0, HOST_STATUS(host));
-	au_sync();
+	__raw_writel(~0, HOST_STATUS(host));
+	wmb(); /* drain writebuffer */
 
-	au_writel(0, HOST_BLKSIZE(host));
-	au_writel(0x001fffff, HOST_TIMEOUT(host));
-	au_sync();
+	__raw_writel(0, HOST_BLKSIZE(host));
+	__raw_writel(0x001fffff, HOST_TIMEOUT(host));
+	wmb(); /* drain writebuffer */
 
-	au_writel(SD_CONFIG2_EN, HOST_CONFIG2(host));
-        au_sync();
+	__raw_writel(SD_CONFIG2_EN, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 
-	au_writel(SD_CONFIG2_EN | SD_CONFIG2_FF, HOST_CONFIG2(host));
-	au_sync_delay(1);
+	__raw_writel(SD_CONFIG2_EN | SD_CONFIG2_FF, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
+	mdelay(1);
 
-	au_writel(SD_CONFIG2_EN, HOST_CONFIG2(host));
-	au_sync();
+	__raw_writel(SD_CONFIG2_EN, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 
 	/* Configure interrupts */
-	au_writel(AU1XMMC_INTERRUPTS, HOST_CONFIG(host));
-	au_sync();
+	__raw_writel(AU1XMMC_INTERRUPTS, HOST_CONFIG(host));
+	wmb(); /* drain writebuffer */
 }
 
 
@@ -767,7 +767,7 @@ static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		host->clock = ios->clock;
 	}
 
-	config2 = au_readl(HOST_CONFIG2(host));
+	config2 = __raw_readl(HOST_CONFIG2(host));
 	switch (ios->bus_width) {
 	case MMC_BUS_WIDTH_8:
 		config2 |= SD_CONFIG2_BB;
@@ -780,8 +780,8 @@ static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		config2 &= ~(SD_CONFIG2_WB | SD_CONFIG2_BB);
 		break;
 	}
-	au_writel(config2, HOST_CONFIG2(host));
-	au_sync();
+	__raw_writel(config2, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 }
 
 #define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT)
@@ -793,7 +793,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 	struct au1xmmc_host *host = dev_id;
 	u32 status;
 
-	status = au_readl(HOST_STATUS(host));
+	status = __raw_readl(HOST_STATUS(host));
 
 	if (!(status & SD_STATUS_I))
 		return IRQ_NONE;	/* not ours */
@@ -839,8 +839,8 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 				status);
 	}
 
-	au_writel(status, HOST_STATUS(host));
-	au_sync();
+	__raw_writel(status, HOST_STATUS(host));
+	wmb(); /* drain writebuffer */
 
 	return IRQ_HANDLED;
 }
@@ -976,7 +976,7 @@ static int au1xmmc_probe(struct platform_device *pdev)
 		goto out1;
 	}
 
-	host->iobase = (unsigned long)ioremap(r->start, 0x3c);
+	host->iobase = ioremap(r->start, 0x3c);
 	if (!host->iobase) {
 		dev_err(&pdev->dev, "cannot remap mmio\n");
 		goto out2;
@@ -1025,6 +1025,16 @@ static int au1xmmc_probe(struct platform_device *pdev)
 		goto out3;
 	}
 
+	host->clk = clk_get(&pdev->dev, ALCHEMY_PERIPH_CLK);
+	if (IS_ERR(host->clk)) {
+		dev_err(&pdev->dev, "cannot find clock\n");
+		goto out_irq;
+	}
+	if (clk_prepare_enable(host->clk)) {
+		dev_err(&pdev->dev, "cannot enable clock\n");
+		goto out_clk;
+	}
+
 	host->status = HOST_S_IDLE;
 
 	/* board-specific carddetect setup, if any */
@@ -1075,7 +1085,7 @@ static int au1xmmc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, host);
 
-	pr_info(DRIVER_NAME ": MMC Controller %d set up at %8.8X"
+	pr_info(DRIVER_NAME ": MMC Controller %d set up at %p"
 		" (mode=%s)\n", pdev->id, host->iobase,
 		host->flags & HOST_F_DMA ? "dma" : "pio");
 
@@ -1087,10 +1097,10 @@ out6:
 		led_classdev_unregister(host->platdata->led);
 out5:
 #endif
-	au_writel(0, HOST_ENABLE(host));
-	au_writel(0, HOST_CONFIG(host));
-	au_writel(0, HOST_CONFIG2(host));
-	au_sync();
+	__raw_writel(0, HOST_ENABLE(host));
+	__raw_writel(0, HOST_CONFIG(host));
+	__raw_writel(0, HOST_CONFIG2(host));
+	wmb(); /* drain writebuffer */
 
 	if (host->flags & HOST_F_DBDMA)
 		au1xmmc_dbdma_shutdown(host);
@@ -1101,7 +1111,10 @@ out5:
 	if (host->platdata && host->platdata->cd_setup &&
 	    !(mmc->caps & MMC_CAP_NEEDS_POLL))
 		host->platdata->cd_setup(mmc, 0);
-
+out_clk:
+	clk_disable_unprepare(host->clk);
+	clk_put(host->clk);
+out_irq:
 	free_irq(host->irq, host);
 out3:
 	iounmap((void *)host->iobase);
@@ -1130,10 +1143,10 @@ static int au1xmmc_remove(struct platform_device *pdev)
 		    !(host->mmc->caps & MMC_CAP_NEEDS_POLL))
 			host->platdata->cd_setup(host->mmc, 0);
 
-		au_writel(0, HOST_ENABLE(host));
-		au_writel(0, HOST_CONFIG(host));
-		au_writel(0, HOST_CONFIG2(host));
-		au_sync();
+		__raw_writel(0, HOST_ENABLE(host));
+		__raw_writel(0, HOST_CONFIG(host));
+		__raw_writel(0, HOST_CONFIG2(host));
+		wmb(); /* drain writebuffer */
 
 		tasklet_kill(&host->data_task);
 		tasklet_kill(&host->finish_task);
@@ -1143,6 +1156,9 @@ static int au1xmmc_remove(struct platform_device *pdev)
 
 		au1xmmc_set_power(host, 0);
 
+		clk_disable_unprepare(host->clk);
+		clk_put(host->clk);
+
 		free_irq(host->irq, host);
 		iounmap((void *)host->iobase);
 		release_resource(host->ioarea);
@@ -1158,11 +1174,11 @@ static int au1xmmc_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	struct au1xmmc_host *host = platform_get_drvdata(pdev);
 
-	au_writel(0, HOST_CONFIG2(host));
-	au_writel(0, HOST_CONFIG(host));
-	au_writel(0xffffffff, HOST_STATUS(host));
-	au_writel(0, HOST_ENABLE(host));
-	au_sync();
+	__raw_writel(0, HOST_CONFIG2(host));
+	__raw_writel(0, HOST_CONFIG(host));
+	__raw_writel(0xffffffff, HOST_STATUS(host));
+	__raw_writel(0, HOST_ENABLE(host));
+	wmb(); /* drain writebuffer */
 
 	return 0;
 }
diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index bc5c518828d2..77d6c17b38c2 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -41,7 +41,7 @@ static u_char au_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	u_char ret = readb(this->IO_ADDR_R);
-	au_sync();
+	wmb(); /* drain writebuffer */
 	return ret;
 }
 
@@ -56,7 +56,7 @@ static void au_write_byte(struct mtd_info *mtd, u_char byte)
 {
 	struct nand_chip *this = mtd->priv;
 	writeb(byte, this->IO_ADDR_W);
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 /**
@@ -69,7 +69,7 @@ static u_char au_read_byte16(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	u_char ret = (u_char) cpu_to_le16(readw(this->IO_ADDR_R));
-	au_sync();
+	wmb(); /* drain writebuffer */
 	return ret;
 }
 
@@ -84,7 +84,7 @@ static void au_write_byte16(struct mtd_info *mtd, u_char byte)
 {
 	struct nand_chip *this = mtd->priv;
 	writew(le16_to_cpu((u16) byte), this->IO_ADDR_W);
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 /**
@@ -97,7 +97,7 @@ static u16 au_read_word(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	u16 ret = readw(this->IO_ADDR_R);
-	au_sync();
+	wmb(); /* drain writebuffer */
 	return ret;
 }
 
@@ -116,7 +116,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
 
 	for (i = 0; i < len; i++) {
 		writeb(buf[i], this->IO_ADDR_W);
-		au_sync();
+		wmb(); /* drain writebuffer */
 	}
 }
 
@@ -135,7 +135,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 
 	for (i = 0; i < len; i++) {
 		buf[i] = readb(this->IO_ADDR_R);
-		au_sync();
+		wmb(); /* drain writebuffer */
 	}
 }
 
@@ -156,7 +156,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
 
 	for (i = 0; i < len; i++) {
 		writew(p[i], this->IO_ADDR_W);
-		au_sync();
+		wmb(); /* drain writebuffer */
 	}
 
 }
@@ -178,7 +178,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
 
 	for (i = 0; i < len; i++) {
 		p[i] = readw(this->IO_ADDR_R);
-		au_sync();
+		wmb(); /* drain writebuffer */
 	}
 }
 
@@ -223,26 +223,23 @@ static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
 
 	case NAND_CTL_SETNCE:
 		/* assert (force assert) chip enable */
-		au_writel((1 << (4 + ctx->cs)), MEM_STNDCTL);
+		alchemy_wrsmem((1 << (4 + ctx->cs)), AU1000_MEM_STNDCTL);
 		break;
 
 	case NAND_CTL_CLRNCE:
 		/* deassert chip enable */
-		au_writel(0, MEM_STNDCTL);
+		alchemy_wrsmem(0, AU1000_MEM_STNDCTL);
 		break;
 	}
 
 	this->IO_ADDR_R = this->IO_ADDR_W;
 
-	/* Drain the writebuffer */
-	au_sync();
+	wmb(); /* Drain the writebuffer */
 }
 
 int au1550_device_ready(struct mtd_info *mtd)
 {
-	int ret = (au_readl(MEM_STSTAT) & 0x1) ? 1 : 0;
-	au_sync();
-	return ret;
+	return (alchemy_rdsmem(AU1000_MEM_STSTAT) & 0x1) ? 1 : 0;
 }
 
 /**
diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c
index a78e4c136959..31c48a7ac2b6 100644
--- a/drivers/net/ethernet/amd/au1000_eth.c
+++ b/drivers/net/ethernet/amd/au1000_eth.c
@@ -89,6 +89,124 @@ MODULE_DESCRIPTION(DRV_DESC);
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 
+/* AU1000 MAC registers and bits */
+#define MAC_CONTROL		0x0
+#  define MAC_RX_ENABLE		(1 << 2)
+#  define MAC_TX_ENABLE		(1 << 3)
+#  define MAC_DEF_CHECK		(1 << 5)
+#  define MAC_SET_BL(X)		(((X) & 0x3) << 6)
+#  define MAC_AUTO_PAD		(1 << 8)
+#  define MAC_DISABLE_RETRY	(1 << 10)
+#  define MAC_DISABLE_BCAST	(1 << 11)
+#  define MAC_LATE_COL		(1 << 12)
+#  define MAC_HASH_MODE		(1 << 13)
+#  define MAC_HASH_ONLY		(1 << 15)
+#  define MAC_PASS_ALL		(1 << 16)
+#  define MAC_INVERSE_FILTER	(1 << 17)
+#  define MAC_PROMISCUOUS	(1 << 18)
+#  define MAC_PASS_ALL_MULTI	(1 << 19)
+#  define MAC_FULL_DUPLEX	(1 << 20)
+#  define MAC_NORMAL_MODE	0
+#  define MAC_INT_LOOPBACK	(1 << 21)
+#  define MAC_EXT_LOOPBACK	(1 << 22)
+#  define MAC_DISABLE_RX_OWN	(1 << 23)
+#  define MAC_BIG_ENDIAN	(1 << 30)
+#  define MAC_RX_ALL		(1 << 31)
+#define MAC_ADDRESS_HIGH	0x4
+#define MAC_ADDRESS_LOW		0x8
+#define MAC_MCAST_HIGH		0xC
+#define MAC_MCAST_LOW		0x10
+#define MAC_MII_CNTRL		0x14
+#  define MAC_MII_BUSY		(1 << 0)
+#  define MAC_MII_READ		0
+#  define MAC_MII_WRITE		(1 << 1)
+#  define MAC_SET_MII_SELECT_REG(X) (((X) & 0x1f) << 6)
+#  define MAC_SET_MII_SELECT_PHY(X) (((X) & 0x1f) << 11)
+#define MAC_MII_DATA		0x18
+#define MAC_FLOW_CNTRL		0x1C
+#  define MAC_FLOW_CNTRL_BUSY	(1 << 0)
+#  define MAC_FLOW_CNTRL_ENABLE (1 << 1)
+#  define MAC_PASS_CONTROL	(1 << 2)
+#  define MAC_SET_PAUSE(X)	(((X) & 0xffff) << 16)
+#define MAC_VLAN1_TAG		0x20
+#define MAC_VLAN2_TAG		0x24
+
+/* Ethernet Controller Enable */
+#  define MAC_EN_CLOCK_ENABLE	(1 << 0)
+#  define MAC_EN_RESET0		(1 << 1)
+#  define MAC_EN_TOSS		(0 << 2)
+#  define MAC_EN_CACHEABLE	(1 << 3)
+#  define MAC_EN_RESET1		(1 << 4)
+#  define MAC_EN_RESET2		(1 << 5)
+#  define MAC_DMA_RESET		(1 << 6)
+
+/* Ethernet Controller DMA Channels */
+/* offsets from MAC_TX_RING_ADDR address */
+#define MAC_TX_BUFF0_STATUS	0x0
+#  define TX_FRAME_ABORTED	(1 << 0)
+#  define TX_JAB_TIMEOUT	(1 << 1)
+#  define TX_NO_CARRIER		(1 << 2)
+#  define TX_LOSS_CARRIER	(1 << 3)
+#  define TX_EXC_DEF		(1 << 4)
+#  define TX_LATE_COLL_ABORT	(1 << 5)
+#  define TX_EXC_COLL		(1 << 6)
+#  define TX_UNDERRUN		(1 << 7)
+#  define TX_DEFERRED		(1 << 8)
+#  define TX_LATE_COLL		(1 << 9)
+#  define TX_COLL_CNT_MASK	(0xF << 10)
+#  define TX_PKT_RETRY		(1 << 31)
+#define MAC_TX_BUFF0_ADDR	0x4
+#  define TX_DMA_ENABLE		(1 << 0)
+#  define TX_T_DONE		(1 << 1)
+#  define TX_GET_DMA_BUFFER(X)	(((X) >> 2) & 0x3)
+#define MAC_TX_BUFF0_LEN	0x8
+#define MAC_TX_BUFF1_STATUS	0x10
+#define MAC_TX_BUFF1_ADDR	0x14
+#define MAC_TX_BUFF1_LEN	0x18
+#define MAC_TX_BUFF2_STATUS	0x20
+#define MAC_TX_BUFF2_ADDR	0x24
+#define MAC_TX_BUFF2_LEN	0x28
+#define MAC_TX_BUFF3_STATUS	0x30
+#define MAC_TX_BUFF3_ADDR	0x34
+#define MAC_TX_BUFF3_LEN	0x38
+
+/* offsets from MAC_RX_RING_ADDR */
+#define MAC_RX_BUFF0_STATUS	0x0
+#  define RX_FRAME_LEN_MASK	0x3fff
+#  define RX_WDOG_TIMER		(1 << 14)
+#  define RX_RUNT		(1 << 15)
+#  define RX_OVERLEN		(1 << 16)
+#  define RX_COLL		(1 << 17)
+#  define RX_ETHER		(1 << 18)
+#  define RX_MII_ERROR		(1 << 19)
+#  define RX_DRIBBLING		(1 << 20)
+#  define RX_CRC_ERROR		(1 << 21)
+#  define RX_VLAN1		(1 << 22)
+#  define RX_VLAN2		(1 << 23)
+#  define RX_LEN_ERROR		(1 << 24)
+#  define RX_CNTRL_FRAME	(1 << 25)
+#  define RX_U_CNTRL_FRAME	(1 << 26)
+#  define RX_MCAST_FRAME	(1 << 27)
+#  define RX_BCAST_FRAME	(1 << 28)
+#  define RX_FILTER_FAIL	(1 << 29)
+#  define RX_PACKET_FILTER	(1 << 30)
+#  define RX_MISSED_FRAME	(1 << 31)
+
+#  define RX_ERROR (RX_WDOG_TIMER | RX_RUNT | RX_OVERLEN |  \
+		    RX_COLL | RX_MII_ERROR | RX_CRC_ERROR | \
+		    RX_LEN_ERROR | RX_U_CNTRL_FRAME | RX_MISSED_FRAME)
+#define MAC_RX_BUFF0_ADDR	0x4
+#  define RX_DMA_ENABLE		(1 << 0)
+#  define RX_T_DONE		(1 << 1)
+#  define RX_GET_DMA_BUFFER(X)	(((X) >> 2) & 0x3)
+#  define RX_SET_BUFF_ADDR(X)	((X) & 0xffffffc0)
+#define MAC_RX_BUFF1_STATUS	0x10
+#define MAC_RX_BUFF1_ADDR	0x14
+#define MAC_RX_BUFF2_STATUS	0x20
+#define MAC_RX_BUFF2_ADDR	0x24
+#define MAC_RX_BUFF3_STATUS	0x30
+#define MAC_RX_BUFF3_ADDR	0x34
+
 /*
  * Theory of operation
  *
@@ -152,10 +270,12 @@ static void au1000_enable_mac(struct net_device *dev, int force_reset)
 
 	if (force_reset || (!aup->mac_enabled)) {
 		writel(MAC_EN_CLOCK_ENABLE, aup->enable);
-		au_sync_delay(2);
+		wmb(); /* drain writebuffer */
+		mdelay(2);
 		writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
 				| MAC_EN_CLOCK_ENABLE), aup->enable);
-		au_sync_delay(2);
+		wmb(); /* drain writebuffer */
+		mdelay(2);
 
 		aup->mac_enabled = 1;
 	}
@@ -273,7 +393,8 @@ static void au1000_hard_stop(struct net_device *dev)
 	reg = readl(&aup->mac->control);
 	reg &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
 	writel(reg, &aup->mac->control);
-	au_sync_delay(10);
+	wmb(); /* drain writebuffer */
+	mdelay(10);
 }
 
 static void au1000_enable_rx_tx(struct net_device *dev)
@@ -286,7 +407,8 @@ static void au1000_enable_rx_tx(struct net_device *dev)
 	reg = readl(&aup->mac->control);
 	reg |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
 	writel(reg, &aup->mac->control);
-	au_sync_delay(10);
+	wmb(); /* drain writebuffer */
+	mdelay(10);
 }
 
 static void
@@ -336,7 +458,8 @@ au1000_adjust_link(struct net_device *dev)
 			reg |= MAC_DISABLE_RX_OWN;
 		}
 		writel(reg, &aup->mac->control);
-		au_sync_delay(1);
+		wmb(); /* drain writebuffer */
+		mdelay(1);
 
 		au1000_enable_rx_tx(dev);
 		aup->old_duplex = phydev->duplex;
@@ -500,9 +623,11 @@ static void au1000_reset_mac_unlocked(struct net_device *dev)
 	au1000_hard_stop(dev);
 
 	writel(MAC_EN_CLOCK_ENABLE, aup->enable);
-	au_sync_delay(2);
+	wmb(); /* drain writebuffer */
+	mdelay(2);
 	writel(0, aup->enable);
-	au_sync_delay(2);
+	wmb(); /* drain writebuffer */
+	mdelay(2);
 
 	aup->tx_full = 0;
 	for (i = 0; i < NUM_RX_DMA; i++) {
@@ -652,7 +777,7 @@ static int au1000_init(struct net_device *dev)
 	for (i = 0; i < NUM_RX_DMA; i++)
 		aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE;
 
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	control = MAC_RX_ENABLE | MAC_TX_ENABLE;
 #ifndef CONFIG_CPU_LITTLE_ENDIAN
@@ -669,7 +794,7 @@ static int au1000_init(struct net_device *dev)
 
 	writel(control, &aup->mac->control);
 	writel(0x8100, &aup->mac->vlan1_tag); /* activate vlan support */
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	spin_unlock_irqrestore(&aup->lock, flags);
 	return 0;
@@ -760,7 +885,7 @@ static int au1000_rx(struct net_device *dev)
 		}
 		prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
 		aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
-		au_sync();
+		wmb(); /* drain writebuffer */
 
 		/* next descriptor */
 		prxd = aup->rx_dma_ring[aup->rx_head];
@@ -808,7 +933,7 @@ static void au1000_tx_ack(struct net_device *dev)
 		au1000_update_tx_stats(dev, ptxd->status);
 		ptxd->buff_stat &= ~TX_T_DONE;
 		ptxd->len = 0;
-		au_sync();
+		wmb(); /* drain writebuffer */
 
 		aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
 		ptxd = aup->tx_dma_ring[aup->tx_tail];
@@ -939,7 +1064,7 @@ static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev)
 	ps->tx_bytes += ptxd->len;
 
 	ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	dev_kfree_skb(skb);
 	aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1);
 	return NETDEV_TX_OK;
diff --git a/drivers/net/irda/au1k_ir.c b/drivers/net/irda/au1k_ir.c
index 5f91e3e01c04..aab2cf72d025 100644
--- a/drivers/net/irda/au1k_ir.c
+++ b/drivers/net/irda/au1k_ir.c
@@ -18,6 +18,7 @@
  *  with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/interrupt.h>
@@ -175,6 +176,7 @@ struct au1k_private {
 
 	struct resource *ioarea;
 	struct au1k_irda_platform_data *platdata;
+	struct clk *irda_clk;
 };
 
 static int qos_mtt_bits = 0x07;  /* 1 ms or more */
@@ -514,9 +516,39 @@ static irqreturn_t au1k_irda_interrupt(int dummy, void *dev_id)
 static int au1k_init(struct net_device *dev)
 {
 	struct au1k_private *aup = netdev_priv(dev);
-	u32 enable, ring_address;
+	u32 enable, ring_address, phyck;
+	struct clk *c;
 	int i;
 
+	c = clk_get(NULL, "irda_clk");
+	if (IS_ERR(c))
+		return PTR_ERR(c);
+	i = clk_prepare_enable(c);
+	if (i) {
+		clk_put(c);
+		return i;
+	}
+
+	switch (clk_get_rate(c)) {
+	case 40000000:
+		phyck = IR_PHYCLK_40MHZ;
+		break;
+	case 48000000:
+		phyck = IR_PHYCLK_48MHZ;
+		break;
+	case 56000000:
+		phyck = IR_PHYCLK_56MHZ;
+		break;
+	case 64000000:
+		phyck = IR_PHYCLK_64MHZ;
+		break;
+	default:
+		clk_disable_unprepare(c);
+		clk_put(c);
+		return -EINVAL;
+	}
+	aup->irda_clk = c;
+
 	enable = IR_HC | IR_CE | IR_C;
 #ifndef CONFIG_CPU_LITTLE_ENDIAN
 	enable |= IR_BE;
@@ -545,7 +577,7 @@ static int au1k_init(struct net_device *dev)
 	irda_write(aup, IR_RING_SIZE,
 				(RING_SIZE_64 << 8) | (RING_SIZE_64 << 12));
 
-	irda_write(aup, IR_CONFIG_2, IR_PHYCLK_48MHZ | IR_ONE_PIN);
+	irda_write(aup, IR_CONFIG_2, phyck | IR_ONE_PIN);
 	irda_write(aup, IR_RING_ADDR_CMPR, 0);
 
 	au1k_irda_set_speed(dev, 9600);
@@ -619,6 +651,9 @@ static int au1k_irda_stop(struct net_device *dev)
 	free_irq(aup->irq_tx, dev);
 	free_irq(aup->irq_rx, dev);
 
+	clk_disable_unprepare(aup->irda_clk);
+	clk_put(aup->irda_clk);
+
 	return 0;
 }
 
@@ -853,6 +888,7 @@ static int au1k_irda_probe(struct platform_device *pdev)
 	struct au1k_private *aup;
 	struct net_device *dev;
 	struct resource *r;
+	struct clk *c;
 	int err;
 
 	dev = alloc_irdadev(sizeof(struct au1k_private));
@@ -886,6 +922,14 @@ static int au1k_irda_probe(struct platform_device *pdev)
 	if (!aup->ioarea)
 		goto out;
 
+	/* bail out early if clock doesn't exist */
+	c = clk_get(NULL, "irda_clk");
+	if (IS_ERR(c)) {
+		err = PTR_ERR(c);
+		goto out;
+	}
+	clk_put(c);
+
 	aup->iobase = ioremap_nocache(r->start, resource_size(r));
 	if (!aup->iobase)
 		goto out2;
diff --git a/drivers/rtc/rtc-au1xxx.c b/drivers/rtc/rtc-au1xxx.c
index ed526a192ce0..fd25e2374d4e 100644
--- a/drivers/rtc/rtc-au1xxx.c
+++ b/drivers/rtc/rtc-au1xxx.c
@@ -32,7 +32,7 @@ static int au1xtoy_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
 	unsigned long t;
 
-	t = au_readl(SYS_TOYREAD);
+	t = alchemy_rdsys(AU1000_SYS_TOYREAD);
 
 	rtc_time_to_tm(t, tm);
 
@@ -45,13 +45,12 @@ static int au1xtoy_rtc_set_time(struct device *dev, struct rtc_time *tm)
 
 	rtc_tm_to_time(tm, &t);
 
-	au_writel(t, SYS_TOYWRITE);
-	au_sync();
+	alchemy_wrsys(t, AU1000_SYS_TOYWRITE);
 
 	/* wait for the pending register write to succeed.  This can
 	 * take up to 6 seconds...
 	 */
-	while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S)
+	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_C0S)
 		msleep(1);
 
 	return 0;
@@ -68,7 +67,7 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev)
 	unsigned long t;
 	int ret;
 
-	t = au_readl(SYS_COUNTER_CNTRL);
+	t = alchemy_rdsys(AU1000_SYS_CNTRCTRL);
 	if (!(t & CNTR_OK)) {
 		dev_err(&pdev->dev, "counters not working; aborting.\n");
 		ret = -ENODEV;
@@ -78,10 +77,10 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev)
 	ret = -ETIMEDOUT;
 
 	/* set counter0 tickrate to 1Hz if necessary */
-	if (au_readl(SYS_TOYTRIM) != 32767) {
+	if (alchemy_rdsys(AU1000_SYS_TOYTRIM) != 32767) {
 		/* wait until hardware gives access to TRIM register */
 		t = 0x00100000;
-		while ((au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S) && --t)
+		while ((alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_T0S) && --t)
 			msleep(1);
 
 		if (!t) {
@@ -93,12 +92,11 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev)
 		}
 
 		/* set 1Hz TOY tick rate */
-		au_writel(32767, SYS_TOYTRIM);
-		au_sync();
+		alchemy_wrsys(32767, AU1000_SYS_TOYTRIM);
 	}
 
 	/* wait until the hardware allows writes to the counter reg */
-	while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S)
+	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_C0S)
 		msleep(1);
 
 	rtcdev = devm_rtc_device_register(&pdev->dev, "rtc-au1xxx",
diff --git a/drivers/spi/spi-au1550.c b/drivers/spi/spi-au1550.c
index fb61464348a1..40c3d43c9292 100644
--- a/drivers/spi/spi-au1550.c
+++ b/drivers/spi/spi-au1550.c
@@ -141,13 +141,13 @@ static inline void au1550_spi_mask_ack_all(struct au1550_spi *hw)
 		  PSC_SPIMSK_MM | PSC_SPIMSK_RR | PSC_SPIMSK_RO
 		| PSC_SPIMSK_RU | PSC_SPIMSK_TR | PSC_SPIMSK_TO
 		| PSC_SPIMSK_TU | PSC_SPIMSK_SD | PSC_SPIMSK_MD;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	hw->regs->psc_spievent =
 		  PSC_SPIEVNT_MM | PSC_SPIEVNT_RR | PSC_SPIEVNT_RO
 		| PSC_SPIEVNT_RU | PSC_SPIEVNT_TR | PSC_SPIEVNT_TO
 		| PSC_SPIEVNT_TU | PSC_SPIEVNT_SD | PSC_SPIEVNT_MD;
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 static void au1550_spi_reset_fifos(struct au1550_spi *hw)
@@ -155,10 +155,10 @@ static void au1550_spi_reset_fifos(struct au1550_spi *hw)
 	u32 pcr;
 
 	hw->regs->psc_spipcr = PSC_SPIPCR_RC | PSC_SPIPCR_TC;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	do {
 		pcr = hw->regs->psc_spipcr;
-		au_sync();
+		wmb(); /* drain writebuffer */
 	} while (pcr != 0);
 }
 
@@ -188,9 +188,9 @@ static void au1550_spi_chipsel(struct spi_device *spi, int value)
 		au1550_spi_bits_handlers_set(hw, spi->bits_per_word);
 
 		cfg = hw->regs->psc_spicfg;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		hw->regs->psc_spicfg = cfg & ~PSC_SPICFG_DE_ENABLE;
-		au_sync();
+		wmb(); /* drain writebuffer */
 
 		if (spi->mode & SPI_CPOL)
 			cfg |= PSC_SPICFG_BI;
@@ -218,10 +218,10 @@ static void au1550_spi_chipsel(struct spi_device *spi, int value)
 		cfg |= au1550_spi_baudcfg(hw, spi->max_speed_hz);
 
 		hw->regs->psc_spicfg = cfg | PSC_SPICFG_DE_ENABLE;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		do {
 			stat = hw->regs->psc_spistat;
-			au_sync();
+			wmb(); /* drain writebuffer */
 		} while ((stat & PSC_SPISTAT_DR) == 0);
 
 		if (hw->pdata->activate_cs)
@@ -252,9 +252,9 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
 	au1550_spi_bits_handlers_set(hw, spi->bits_per_word);
 
 	cfg = hw->regs->psc_spicfg;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	hw->regs->psc_spicfg = cfg & ~PSC_SPICFG_DE_ENABLE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	if (hw->usedma && bpw <= 8)
 		cfg &= ~PSC_SPICFG_DD_DISABLE;
@@ -268,12 +268,12 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
 	cfg |= au1550_spi_baudcfg(hw, hz);
 
 	hw->regs->psc_spicfg = cfg;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	if (cfg & PSC_SPICFG_DE_ENABLE) {
 		do {
 			stat = hw->regs->psc_spistat;
-			au_sync();
+			wmb(); /* drain writebuffer */
 		} while ((stat & PSC_SPISTAT_DR) == 0);
 	}
 
@@ -396,11 +396,11 @@ static int au1550_spi_dma_txrxb(struct spi_device *spi, struct spi_transfer *t)
 
 	/* by default enable nearly all events interrupt */
 	hw->regs->psc_spimsk = PSC_SPIMSK_SD;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	/* start the transfer */
 	hw->regs->psc_spipcr = PSC_SPIPCR_MS;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	wait_for_completion(&hw->master_done);
 
@@ -429,7 +429,7 @@ static irqreturn_t au1550_spi_dma_irq_callback(struct au1550_spi *hw)
 
 	stat = hw->regs->psc_spistat;
 	evnt = hw->regs->psc_spievent;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	if ((stat & PSC_SPISTAT_DI) == 0) {
 		dev_err(hw->dev, "Unexpected IRQ!\n");
 		return IRQ_NONE;
@@ -484,7 +484,7 @@ static irqreturn_t au1550_spi_dma_irq_callback(struct au1550_spi *hw)
 static void au1550_spi_rx_word_##size(struct au1550_spi *hw)		\
 {									\
 	u32 fifoword = hw->regs->psc_spitxrx & (u32)(mask);		\
-	au_sync();							\
+	wmb(); /* drain writebuffer */					\
 	if (hw->rx) {							\
 		*(u##size *)hw->rx = (u##size)fifoword;			\
 		hw->rx += (size) / 8;					\
@@ -504,7 +504,7 @@ static void au1550_spi_tx_word_##size(struct au1550_spi *hw)		\
 	if (hw->tx_count >= hw->len)					\
 		fifoword |= PSC_SPITXRX_LC;				\
 	hw->regs->psc_spitxrx = fifoword;				\
-	au_sync();							\
+	wmb(); /* drain writebuffer */					\
 }
 
 AU1550_SPI_RX_WORD(8,0xff)
@@ -539,18 +539,18 @@ static int au1550_spi_pio_txrxb(struct spi_device *spi, struct spi_transfer *t)
 		}
 
 		stat = hw->regs->psc_spistat;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		if (stat & PSC_SPISTAT_TF)
 			break;
 	}
 
 	/* enable event interrupts */
 	hw->regs->psc_spimsk = mask;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	/* start the transfer */
 	hw->regs->psc_spipcr = PSC_SPIPCR_MS;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	wait_for_completion(&hw->master_done);
 
@@ -564,7 +564,7 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 
 	stat = hw->regs->psc_spistat;
 	evnt = hw->regs->psc_spievent;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	if ((stat & PSC_SPISTAT_DI) == 0) {
 		dev_err(hw->dev, "Unexpected IRQ!\n");
 		return IRQ_NONE;
@@ -594,7 +594,7 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 	do {
 		busy = 0;
 		stat = hw->regs->psc_spistat;
-		au_sync();
+		wmb(); /* drain writebuffer */
 
 		/*
 		 * Take care to not let the Rx FIFO overflow.
@@ -615,7 +615,7 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 	} while (busy);
 
 	hw->regs->psc_spievent = PSC_SPIEVNT_RR | PSC_SPIEVNT_TR;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	/*
 	 * Restart the SPI transmission in case of a transmit underflow.
@@ -634,9 +634,9 @@ static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw)
 	 */
 	if (evnt & PSC_SPIEVNT_TU) {
 		hw->regs->psc_spievent = PSC_SPIEVNT_TU | PSC_SPIEVNT_MD;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		hw->regs->psc_spipcr = PSC_SPIPCR_MS;
-		au_sync();
+		wmb(); /* drain writebuffer */
 	}
 
 	if (hw->rx_count >= hw->len) {
@@ -690,19 +690,19 @@ static void au1550_spi_setup_psc_as_spi(struct au1550_spi *hw)
 
 	/* set up the PSC for SPI mode */
 	hw->regs->psc_ctrl = PSC_CTRL_DISABLE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	hw->regs->psc_sel = PSC_SEL_PS_SPIMODE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	hw->regs->psc_spicfg = 0;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	hw->regs->psc_ctrl = PSC_CTRL_ENABLE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	do {
 		stat = hw->regs->psc_spistat;
-		au_sync();
+		wmb(); /* drain writebuffer */
 	} while ((stat & PSC_SPISTAT_SR) == 0);
 
 
@@ -717,16 +717,16 @@ static void au1550_spi_setup_psc_as_spi(struct au1550_spi *hw)
 #endif
 
 	hw->regs->psc_spicfg = cfg;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	au1550_spi_mask_ack_all(hw);
 
 	hw->regs->psc_spicfg |= PSC_SPICFG_DE_ENABLE;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	do {
 		stat = hw->regs->psc_spistat;
-		au_sync();
+		wmb(); /* drain writebuffer */
 	} while ((stat & PSC_SPISTAT_DR) == 0);
 
 	au1550_spi_reset_fifos(hw);
diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c
index 372d4aea9d1c..0676746ec68c 100644
--- a/drivers/video/fbdev/au1100fb.c
+++ b/drivers/video/fbdev/au1100fb.c
@@ -41,6 +41,7 @@
  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -113,7 +114,7 @@ static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
 	case VESA_NO_BLANKING:
 		/* Turn on panel */
 		fbdev->regs->lcd_control |= LCD_CONTROL_GO;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		break;
 
 	case VESA_VSYNC_SUSPEND:
@@ -121,7 +122,7 @@ static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
 	case VESA_POWERDOWN:
 		/* Turn off panel */
 		fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
-		au_sync();
+		wmb(); /* drain writebuffer */
 		break;
 	default:
 		break;
@@ -434,7 +435,7 @@ static int au1100fb_drv_probe(struct platform_device *dev)
 	struct au1100fb_device *fbdev = NULL;
 	struct resource *regs_res;
 	unsigned long page;
-	u32 sys_clksrc;
+	struct clk *c;
 
 	/* Allocate new device private */
 	fbdev = devm_kzalloc(&dev->dev, sizeof(struct au1100fb_device),
@@ -473,6 +474,13 @@ static int au1100fb_drv_probe(struct platform_device *dev)
 	print_dbg("Register memory map at %p", fbdev->regs);
 	print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len);
 
+	c = clk_get(NULL, "lcd_intclk");
+	if (!IS_ERR(c)) {
+		fbdev->lcdclk = c;
+		clk_set_rate(c, 48000000);
+		clk_prepare_enable(c);
+	}
+
 	/* Allocate the framebuffer to the maximum screen size * nbr of video buffers */
 	fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres *
 		  	(fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS;
@@ -506,10 +514,6 @@ static int au1100fb_drv_probe(struct platform_device *dev)
 	print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
 	print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
 
-	/* Setup LCD clock to AUX (48 MHz) */
-	sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL);
-	au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC);
-
 	/* load the panel info into the var struct */
 	au1100fb_var.bits_per_pixel = fbdev->panel->bpp;
 	au1100fb_var.xres = fbdev->panel->xres;
@@ -546,6 +550,10 @@ static int au1100fb_drv_probe(struct platform_device *dev)
 	return 0;
 
 failed:
+	if (fbdev->lcdclk) {
+		clk_disable_unprepare(fbdev->lcdclk);
+		clk_put(fbdev->lcdclk);
+	}
 	if (fbdev->fb_mem) {
 		dma_free_noncoherent(&dev->dev, fbdev->fb_len, fbdev->fb_mem,
 				     fbdev->fb_phys);
@@ -576,11 +584,15 @@ int au1100fb_drv_remove(struct platform_device *dev)
 
 	fb_dealloc_cmap(&fbdev->info.cmap);
 
+	if (fbdev->lcdclk) {
+		clk_disable_unprepare(fbdev->lcdclk);
+		clk_put(fbdev->lcdclk);
+	}
+
 	return 0;
 }
 
 #ifdef CONFIG_PM
-static u32 sys_clksrc;
 static struct au1100fb_regs fbregs;
 
 int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state)
@@ -590,14 +602,11 @@ int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state)
 	if (!fbdev)
 		return 0;
 
-	/* Save the clock source state */
-	sys_clksrc = au_readl(SYS_CLKSRC);
-
 	/* Blank the LCD */
 	au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info);
 
-	/* Stop LCD clocking */
-	au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC);
+	if (fbdev->lcdclk)
+		clk_disable(fbdev->lcdclk);
 
 	memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs));
 
@@ -613,8 +622,8 @@ int au1100fb_drv_resume(struct platform_device *dev)
 
 	memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs));
 
-	/* Restart LCD clocking */
-	au_writel(sys_clksrc, SYS_CLKSRC);
+	if (fbdev->lcdclk)
+		clk_enable(fbdev->lcdclk);
 
 	/* Unblank the LCD */
 	au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info);
diff --git a/drivers/video/fbdev/au1100fb.h b/drivers/video/fbdev/au1100fb.h
index 12d9642d5465..9af19939a9c6 100644
--- a/drivers/video/fbdev/au1100fb.h
+++ b/drivers/video/fbdev/au1100fb.h
@@ -109,6 +109,7 @@ struct au1100fb_device {
 	size_t	      		fb_len;
 	dma_addr_t    		fb_phys;
 	int			panel_idx;
+	struct clk		*lcdclk;
 };
 
 /********************************************************************/
diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c
index 4cfba78a1458..40494dbdf519 100644
--- a/drivers/video/fbdev/au1200fb.c
+++ b/drivers/video/fbdev/au1200fb.c
@@ -30,6 +30,7 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
@@ -330,9 +331,8 @@ struct panel_settings
 	uint32 mode_pwmhi;
 	uint32 mode_outmask;
 	uint32 mode_fifoctrl;
-	uint32 mode_toyclksrc;
 	uint32 mode_backlight;
-	uint32 mode_auxpll;
+	uint32 lcdclk;
 #define Xres min_xres
 #define Yres min_yres
 	u32	min_xres;		/* Minimum horizontal resolution */
@@ -379,9 +379,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		320, 320,
 		240, 240,
 	},
@@ -407,9 +406,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		640, 480,
 		640, 480,
 	},
@@ -435,9 +433,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		800, 800,
 		600, 600,
 	},
@@ -463,9 +460,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 6, /* 72MHz AUXPLL */
+		.lcdclk		= 72,
 		1024, 1024,
 		768, 768,
 	},
@@ -491,9 +487,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 10, /* 120MHz AUXPLL */
+		.lcdclk		= 120,
 		1280, 1280,
 		1024, 1024,
 	},
@@ -519,9 +514,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x03400000, /* SCB 0x0 */
 		.mode_outmask	= 0x00FFFFFF,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		1024, 1024,
 		768, 768,
 	},
@@ -550,9 +544,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x03400000,
 		.mode_outmask	= 0x00fcfcfc,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		640, 480,
 		640, 480,
 	},
@@ -581,9 +574,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x03400000,
 		.mode_outmask	= 0x00fcfcfc,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96, /* 96MHz AUXPLL */
 		320, 320,
 		240, 240,
 	},
@@ -612,9 +604,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x03400000,
 		.mode_outmask	= 0x00fcfcfc,
 		.mode_fifoctrl	= 0x2f2f2f2f,
-		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
 		.mode_backlight	= 0x00000000,
-		.mode_auxpll		= 8, /* 96MHz AUXPLL */
+		.lcdclk		= 96,
 		856, 856,
 		480, 480,
 	},
@@ -646,9 +637,8 @@ static struct panel_settings known_lcd_panels[] =
 		.mode_pwmhi		= 0x00000000,
 		.mode_outmask		= 0x00FFFFFF,
 		.mode_fifoctrl		= 0x2f2f2f2f,
-		.mode_toyclksrc		= 0x00000004, /* AUXPLL directly */
 		.mode_backlight		= 0x00000000,
-		.mode_auxpll		= (48/12) * 2,
+		.lcdclk			= 96,
 		800, 800,
 		480, 480,
 	},
@@ -764,7 +754,7 @@ static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
 
 	/* Disable the window while making changes, then restore WINEN */
 	winenable = lcd->winenable & (1 << plane);
-	au_sync();
+	wmb(); /* drain writebuffer */
 	lcd->winenable &= ~(1 << plane);
 	lcd->window[plane].winctrl0 = winctrl0;
 	lcd->window[plane].winctrl1 = winctrl1;
@@ -772,7 +762,7 @@ static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
 	lcd->window[plane].winbuf1 = fbdev->fb_phys;
 	lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
 	lcd->winenable |= winenable;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	return 0;
 }
@@ -788,22 +778,21 @@ static void au1200_setpanel(struct panel_settings *newpanel,
 	/* Make sure all windows disabled */
 	winenable = lcd->winenable;
 	lcd->winenable = 0;
-	au_sync();
+	wmb(); /* drain writebuffer */
 	/*
 	 * Ensure everything is disabled before reconfiguring
 	 */
 	if (lcd->screen & LCD_SCREEN_SEN) {
 		/* Wait for vertical sync period */
 		lcd->intstatus = LCD_INT_SS;
-		while ((lcd->intstatus & LCD_INT_SS) == 0) {
-			au_sync();
-		}
+		while ((lcd->intstatus & LCD_INT_SS) == 0)
+			;
 
 		lcd->screen &= ~LCD_SCREEN_SEN;	/*disable the controller*/
 
 		do {
 			lcd->intstatus = lcd->intstatus; /*clear interrupts*/
-			au_sync();
+			wmb(); /* drain writebuffer */
 		/*wait for controller to shut down*/
 		} while ((lcd->intstatus & LCD_INT_SD) == 0);
 
@@ -829,11 +818,17 @@ static void au1200_setpanel(struct panel_settings *newpanel,
 	 */
 	if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
 	{
-		uint32 sys_clksrc;
-		au_writel(panel->mode_auxpll, SYS_AUXPLL);
-		sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
-		sys_clksrc |= panel->mode_toyclksrc;
-		au_writel(sys_clksrc, SYS_CLKSRC);
+		struct clk *c = clk_get(NULL, "lcd_intclk");
+		long r, pc = panel->lcdclk * 1000000;
+
+		if (!IS_ERR(c)) {
+			r = clk_round_rate(c, pc);
+			if ((pc - r) < (pc / 10)) {	/* 10% slack */
+				clk_set_rate(c, r);
+				clk_prepare_enable(c);
+			}
+			clk_put(c);
+		}
 	}
 
 	/*
@@ -847,7 +842,7 @@ static void au1200_setpanel(struct panel_settings *newpanel,
 	lcd->pwmhi = panel->mode_pwmhi;
 	lcd->outmask = panel->mode_outmask;
 	lcd->fifoctrl = panel->mode_fifoctrl;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	/* fixme: Check window settings to make sure still valid
 	 * for new geometry */
@@ -863,7 +858,7 @@ static void au1200_setpanel(struct panel_settings *newpanel,
 	 * Re-enable screen now that it is configured
 	 */
 	lcd->screen |= LCD_SCREEN_SEN;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	/* Call init of panel */
 	if (pd->panel_init)
@@ -956,7 +951,7 @@ static void au1200_setmode(struct au1200fb_device *fbdev)
 		| LCD_WINCTRL2_SCY_1
 		) ;
 	lcd->winenable |= win->w[plane].mode_winenable;
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 
@@ -1270,7 +1265,7 @@ static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
 
 	if (pdata->flags & SCREEN_MASK)
 		lcd->colorkeymsk = pdata->mask;
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
@@ -1288,7 +1283,7 @@ static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
 	hi1 = (lcd->pwmhi >> 16) + 1;
 	divider = (lcd->pwmdiv & 0x3FFFF) + 1;
 	pdata->brightness = ((hi1 << 8) / divider) - 1;
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 static void set_window(unsigned int plane,
@@ -1387,7 +1382,7 @@ static void set_window(unsigned int plane,
 		val |= (pdata->enable & 1) << plane;
 		lcd->winenable = val;
 	}
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 static void get_window(unsigned int plane,
@@ -1414,7 +1409,7 @@ static void get_window(unsigned int plane,
 	pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
 
 	pdata->enable = (lcd->winenable >> plane) & 1;
-	au_sync();
+	wmb(); /* drain writebuffer */
 }
 
 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
@@ -1511,7 +1506,7 @@ static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
 {
 	/* Nothing to do for now, just clear any pending interrupt */
 	lcd->intstatus = lcd->intstatus;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	return IRQ_HANDLED;
 }
@@ -1809,7 +1804,7 @@ static int au1200fb_drv_suspend(struct device *dev)
 	au1200_setpanel(NULL, pd);
 
 	lcd->outmask = 0;
-	au_sync();
+	wmb(); /* drain writebuffer */
 
 	return 0;
 }
diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c
index 4baf2d788920..8453531545df 100644
--- a/drivers/watchdog/octeon-wdt-main.c
+++ b/drivers/watchdog/octeon-wdt-main.c
@@ -145,35 +145,39 @@ static void __init octeon_wdt_build_stage1(void)
 
 	uasm_i_mfc0(&p, K0, C0_STATUS);
 #ifdef CONFIG_HOTPLUG_CPU
-	uasm_il_bbit0(&p, &r, K0, ilog2(ST0_NMI), label_enter_bootloader);
+	if (octeon_bootloader_entry_addr)
+		uasm_il_bbit0(&p, &r, K0, ilog2(ST0_NMI),
+			      label_enter_bootloader);
 #endif
 	/* Force 64-bit addressing enabled */
 	uasm_i_ori(&p, K0, K0, ST0_UX | ST0_SX | ST0_KX);
 	uasm_i_mtc0(&p, K0, C0_STATUS);
 
 #ifdef CONFIG_HOTPLUG_CPU
-	uasm_i_mfc0(&p, K0, C0_EBASE);
-	/* Coreid number in K0 */
-	uasm_i_andi(&p, K0, K0, 0xf);
-	/* 8 * coreid in bits 16-31 */
-	uasm_i_dsll_safe(&p, K0, K0, 3 + 16);
-	uasm_i_ori(&p, K0, K0, 0x8001);
-	uasm_i_dsll_safe(&p, K0, K0, 16);
-	uasm_i_ori(&p, K0, K0, 0x0700);
-	uasm_i_drotr_safe(&p, K0, K0, 32);
-	/*
-	 * Should result in: 0x8001,0700,0000,8*coreid which is
-	 * CVMX_CIU_WDOGX(coreid) - 0x0500
-	 *
-	 * Now ld K0, CVMX_CIU_WDOGX(coreid)
-	 */
-	uasm_i_ld(&p, K0, 0x500, K0);
-	/*
-	 * If bit one set handle the NMI as a watchdog event.
-	 * otherwise transfer control to bootloader.
-	 */
-	uasm_il_bbit0(&p, &r, K0, 1, label_enter_bootloader);
-	uasm_i_nop(&p);
+	if (octeon_bootloader_entry_addr) {
+		uasm_i_mfc0(&p, K0, C0_EBASE);
+		/* Coreid number in K0 */
+		uasm_i_andi(&p, K0, K0, 0xf);
+		/* 8 * coreid in bits 16-31 */
+		uasm_i_dsll_safe(&p, K0, K0, 3 + 16);
+		uasm_i_ori(&p, K0, K0, 0x8001);
+		uasm_i_dsll_safe(&p, K0, K0, 16);
+		uasm_i_ori(&p, K0, K0, 0x0700);
+		uasm_i_drotr_safe(&p, K0, K0, 32);
+		/*
+		 * Should result in: 0x8001,0700,0000,8*coreid which is
+		 * CVMX_CIU_WDOGX(coreid) - 0x0500
+		 *
+		 * Now ld K0, CVMX_CIU_WDOGX(coreid)
+		 */
+		uasm_i_ld(&p, K0, 0x500, K0);
+		/*
+		 * If bit one set handle the NMI as a watchdog event.
+		 * otherwise transfer control to bootloader.
+		 */
+		uasm_il_bbit0(&p, &r, K0, 1, label_enter_bootloader);
+		uasm_i_nop(&p);
+	}
 #endif
 
 	/* Clear Dcache so cvmseg works right. */
@@ -194,11 +198,13 @@ static void __init octeon_wdt_build_stage1(void)
 	uasm_i_dmfc0(&p, K0, C0_DESAVE);
 
 #ifdef CONFIG_HOTPLUG_CPU
-	uasm_build_label(&l, p, label_enter_bootloader);
-	/* Jump to the bootloader and restore K0 */
-	UASM_i_LA(&p, K0, (long)octeon_bootloader_entry_addr);
-	uasm_i_jr(&p, K0);
-	uasm_i_dmfc0(&p, K0, C0_DESAVE);
+	if (octeon_bootloader_entry_addr) {
+		uasm_build_label(&l, p, label_enter_bootloader);
+		/* Jump to the bootloader and restore K0 */
+		UASM_i_LA(&p, K0, (long)octeon_bootloader_entry_addr);
+		uasm_i_jr(&p, K0);
+		uasm_i_dmfc0(&p, K0, C0_DESAVE);
+	}
 #endif
 	uasm_resolve_relocs(relocs, labels);