summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/arm/mach-pxa/mainstone.c6
-rw-r--r--include/asm-arm/arch-pxa/pxa-regs.h12
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 07892f4..fe74043 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -407,6 +407,12 @@ static void __init mainstone_init(void)
printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
mst_flash_data[0].name);
+ /* system bus arbiter setting
+ * - Core_Park
+ * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
+ */
+ ARB_CNTRL = ARB_CORE_PARK | 0x234;
+
/*
* On Mainstone, we route AC97_SYSCLK via GPIO45 to
* the audio daughter card
diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h
index a75a247..dae138b 100644
--- a/include/asm-arm/arch-pxa/pxa-regs.h
+++ b/include/asm-arm/arch-pxa/pxa-regs.h
@@ -2042,6 +2042,18 @@
#ifdef CONFIG_PXA27x
+#define ARB_CNTRL __REG(0x48000048) /* Arbiter Control Register */
+
+#define ARB_DMA_SLV_PARK (1<<31) /* Be parked with DMA slave when idle */
+#define ARB_CI_PARK (1<<30) /* Be parked with Camera Interface when idle */
+#define ARB_EX_MEM_PARK (1<<29) /* Be parked with external MEMC when idle */
+#define ARB_INT_MEM_PARK (1<<28) /* Be parked with internal MEMC when idle */
+#define ARB_USB_PARK (1<<27) /* Be parked with USB when idle */
+#define ARB_LCD_PARK (1<<26) /* Be parked with LCD when idle */
+#define ARB_DMA_PARK (1<<25) /* Be parked with DMA when idle */
+#define ARB_CORE_PARK (1<<24) /* Be parked with core when idle */
+#define ARB_LOCK_FLAG (1<<23) /* Only Locking masters gain access to the bus */
+
/*
* Keypad
*/
OpenPOWER on IntegriCloud