diff --git a/README b/README
index 9ebd4f2345..4cad8f8356 100644
--- a/README
+++ b/README
@@ -2393,14 +2393,6 @@ Low Level (hardware related) configuration options:
 		If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be
 		forced to a value that ensures that CCSR is not relocated.
 
-- CONFIG_IDE_AHB:
-		Most IDE controllers were designed to be connected with PCI
-		interface. Only few of them were designed for AHB interface.
-		When software is doing ATA command and data transfer to
-		IDE devices through IDE-AHB controller, some additional
-		registers accessing to these kind of IDE-AHB controller
-		is required.
-
 - CONFIG_SYS_IMMR:	Physical address of the Internal Memory.
 		DO NOT CHANGE unless you know exactly what you're
 		doing! (11-4) [MPC8xx systems only]
diff --git a/drivers/block/ide.c b/drivers/block/ide.c
index 085aa356fe..63c4cfdc1c 100644
--- a/drivers/block/ide.c
+++ b/drivers/block/ide.c
@@ -676,28 +676,14 @@ __weak void ide_outb(int dev, int port, unsigned char val)
 	debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
 	      dev, port, val, ATA_CURR_BASE(dev) + port);
 
-#if defined(CONFIG_IDE_AHB)
-	if (port) {
-		/* write command */
-		ide_write_register(dev, port, val);
-	} else {
-		/* write data */
-		outb(val, (ATA_CURR_BASE(dev)));
-	}
-#else
 	outb(val, ATA_CURR_BASE(dev) + port);
-#endif
 }
 
 __weak unsigned char ide_inb(int dev, int port)
 {
 	uchar val;
 
-#if defined(CONFIG_IDE_AHB)
-	val = ide_read_register(dev, port);
-#else
 	val = inb(ATA_CURR_BASE(dev) + port);
-#endif
 
 	debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
 	      dev, port, ATA_CURR_BASE(dev) + port, val);
@@ -824,9 +810,6 @@ __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
 
 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
 {
-#if defined(CONFIG_IDE_AHB)
-	ide_write_data(dev, sect_buf, words);
-#else
 	uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
 	ushort *dbuf;
 
@@ -837,14 +820,10 @@ __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
 		EIEIO;
 		outw(cpu_to_le16(*dbuf++), paddr);
 	}
-#endif /* CONFIG_IDE_AHB */
 }
 
 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
 {
-#if defined(CONFIG_IDE_AHB)
-	ide_read_data(dev, sect_buf, words);
-#else
 	uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
 	ushort *dbuf;
 
@@ -858,7 +837,6 @@ __weak void ide_input_data(int dev, ulong *sect_buf, int words)
 		EIEIO;
 		*dbuf++ = le16_to_cpu(inw(paddr));
 	}
-#endif /* CONFIG_IDE_AHB */
 }
 
 #ifdef CONFIG_BLK
diff --git a/include/ide.h b/include/ide.h
index 60739436e9..2994b7a762 100644
--- a/include/ide.h
+++ b/include/ide.h
@@ -41,13 +41,6 @@ int ide_preinit(void);
 int ide_device_present(int dev);
 #endif
 
-#if defined(CONFIG_IDE_AHB)
-unsigned char ide_read_register(int dev, unsigned int port);
-void ide_write_register(int dev, unsigned int port, unsigned char val);
-void ide_read_data(int dev, ulong *sect_buf, int words);
-void ide_write_data(int dev, const ulong *sect_buf, int words);
-#endif
-
 /*
  * I/O function overrides
  */