--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -586,6 +586,9 @@
 #define TIMER_CTL_MONOTONIC_MASK	(1 << 30)
 #define TIMER_CTL_ENABLE_MASK		(1 << 31)
 
+/* Clock reset control (63268 only) */
+#define TIMER_CLK_RST_CTL_REG		0x2c
+#define CLK_RST_CTL_USB_REF_CLK_EN	(1 << 18)
 
 /*************************************************************************
  * _REG relative to RSET_WDT
@@ -1547,6 +1550,11 @@
 #define STRAPBUS_63268_FCVO_SHIFT	21
 #define STRAPBUS_63268_FCVO_MASK	(0xf << STRAPBUS_63268_FCVO_SHIFT)
 
+#define MISC_IDDQ_CTRL_6328_REG		0x48
+#define MISC_IDDQ_CTRL_63268_REG	0x4c
+
+#define IDDQ_CTRL_63268_USBH		(1 << 4)
+
 #define MISC_STRAPBUS_6328_REG		0x240
 #define STRAPBUS_6328_FCVO_SHIFT	7
 #define STRAPBUS_6328_FCVO_MASK		(0x1f << STRAPBUS_6328_FCVO_SHIFT)
--- a/arch/mips/bcm63xx/clk.c
+++ b/arch/mips/bcm63xx/clk.c
@@ -62,6 +62,26 @@ static void bcm_ub_hwclock_set(u32 mask,
 	bcm_perf_writel(reg, PERF_UB_CKCTL_REG);
 }
 
+static void bcm_misc_iddq_set(u32 mask, int enable)
+{
+	u32 offset;
+	u32 reg;
+
+	if (BCMCPU_IS_6328() || BCMCPU_IS_6362())
+		offset = MISC_IDDQ_CTRL_6328_REG;
+	else if (BCMCPU_IS_63268())
+		offset = MISC_IDDQ_CTRL_63268_REG;
+	else
+		return;
+
+	reg = bcm_misc_readl(offset);
+	if (enable)
+		reg &= ~mask;
+	else
+		reg |= mask;
+	bcm_misc_writel(reg, offset);
+}
+
 /*
  * Ethernet MAC "misc" clock: dma clocks and main clock on 6348
  */
@@ -199,7 +219,17 @@ static void usbh_set(struct clk *clk, in
 	} else if (BCMCPU_IS_6368()) {
 		bcm_hwclock_set(CKCTL_6368_USBH_EN, enable);
 	} else if (BCMCPU_IS_63268()) {
+		u32 reg;
+
 		bcm_hwclock_set(CKCTL_63268_USBH_EN, enable);
+		bcm_misc_iddq_set(IDDQ_CTRL_63268_USBH, enable);
+		bcm63xx_core_set_reset(BCM63XX_RESET_USBH, !enable);
+		reg = bcm_timer_readl(TIMER_CLK_RST_CTL_REG);
+		if (enable)
+			reg |= CLK_RST_CTL_USB_REF_CLK_EN;
+		else
+			reg &= ~CLK_RST_CTL_USB_REF_CLK_EN;
+		bcm_timer_writel(reg, TIMER_CLK_RST_CTL_REG);
 	} else {
 		return;
 	}
