diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index e4ccdcd..a241a0a 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -85,11 +85,26 @@
 	help
 	  BF522 Processor Support.
 
+config BF523
+	bool "BF523"
+	help
+	  BF523 Processor Support.
+
+config BF524
+	bool "BF524"
+	help
+	  BF524 Processor Support.
+
 config BF525
 	bool "BF525"
 	help
 	  BF525 Processor Support.
 
+config BF526
+	bool "BF526"
+	help
+	  BF526 Processor Support.
+
 config BF527
 	bool "BF527"
 	help
@@ -198,7 +213,7 @@
 
 config BF52x
 	bool
-	depends on (BF522 || BF525 || BF527)
+	depends on (BF522 || BF523 || BF524 || BF525 || BF526 || BF527)
 	default y
 
 config BF53x
@@ -371,7 +386,10 @@
 config MAX_VCO_HZ
 	int
 	default 600000000 if BF522
+	default 400000000 if BF523
+	default 400000000 if BF524
 	default 600000000 if BF525
+	default 400000000 if BF526
 	default 600000000 if BF527
 	default 400000000 if BF531
 	default 400000000 if BF532
@@ -383,6 +401,8 @@
 	default 533333333 if BF539
 	default 600000000 if BF542
 	default 533333333 if BF544
+	default 600000000 if BF547
+	default 600000000 if BF548
 	default 533333333 if BF549
 	default 600000000 if BF561
 
@@ -897,8 +917,8 @@
 	depends on PM_WAKEUP_GPIO_BY_SIC_IWR
 	default 0x80000000 if (BF537 || BF536 || BF534)
 	default 0x100000 if (BF533 || BF532 || BF531)
-	default 0x800000 if (BF549 || BF548 || BF547 || BF542)
-	default 0x800000 if (BF527 || BF524 || BF522)
+	default 0x800000 if (BF54x)
+	default 0x800000 if (BF52x)
 
 config PM_WAKEUP_GPIO_NUMBER
 	int "Wakeup GPIO number"
diff --git a/arch/blackfin/Makefile b/arch/blackfin/Makefile
index c47e000..0c9680e 100644
--- a/arch/blackfin/Makefile
+++ b/arch/blackfin/Makefile
@@ -21,7 +21,10 @@
 
 # setup the machine name and the machine dependent settings
 machine-$(CONFIG_BF522) := bf527
+machine-$(CONFIG_BF523) := bf527
+machine-$(CONFIG_BF524) := bf527
 machine-$(CONFIG_BF525) := bf527
+machine-$(CONFIG_BF526) := bf527
 machine-$(CONFIG_BF527) := bf527
 machine-$(CONFIG_BF531) := bf533
 machine-$(CONFIG_BF532) := bf533
@@ -39,7 +42,10 @@
 export MACHINE
 
 cpu-$(CONFIG_BF522) := bf522
+cpu-$(CONFIG_BF523) := bf523
+cpu-$(CONFIG_BF524) := bf524
 cpu-$(CONFIG_BF525) := bf525
+cpu-$(CONFIG_BF526) := bf526
 cpu-$(CONFIG_BF527) := bf527
 cpu-$(CONFIG_BF531) := bf531
 cpu-$(CONFIG_BF532) := bf532
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index ce85d4b..ea13d2a 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -83,6 +83,7 @@
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/err.h>
+#include <linux/proc_fs.h>
 #include <asm/blackfin.h>
 #include <asm/gpio.h>
 #include <asm/portmux.h>
@@ -1194,3 +1195,36 @@
 }
 
 #endif /*BF548_FAMILY */
+
+#if defined(CONFIG_PROC_FS)
+static int gpio_proc_read(char *buf, char **start, off_t offset,
+			  int len, int *unused_i, void *unused_v)
+{
+	int c, outlen = 0;
+
+	for (c = 0; c < MAX_RESOURCES; c++) {
+		if (!check_gpio(c) && (reserved_gpio_map[gpio_bank(c)] & gpio_bit(c)))
+			len = sprintf(buf, "GPIO_%d: %s \tGPIO %s\n", c,
+				 get_label(c), get_gpio_dir(c) ? "OUTPUT" : "INPUT");
+		else if (reserved_peri_map[gpio_bank(c)] & gpio_bit(c))
+			len = sprintf(buf, "GPIO_%d: %s \tPeripheral\n", c, get_label(c));
+		else
+			continue;
+		buf += len;
+		outlen += len;
+	}
+	return outlen;
+}
+
+static __init int gpio_register_proc(void)
+{
+	struct proc_dir_entry *proc_gpio;
+
+	proc_gpio = create_proc_entry("gpio", S_IRUGO, NULL);
+	if (proc_gpio)
+		proc_gpio->read_proc = gpio_proc_read;
+	return proc_gpio != NULL;
+}
+
+__initcall(gpio_register_proc);
+#endif