diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index dcf21e5..79f2c95 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -410,6 +410,208 @@ static int da850_evm_ui_expander_teardown(struct i2c_client *client,
 	return 0;
 }
 
+/* assign the baseboard expander's GPIOs after the UI board's */
+#define DA850_UI_EXPANDER_N_GPIOS ARRAY_SIZE(ui_expander_names)
+#define DA850_BB_EXPANDER_GPIO_BASE (DAVINCI_N_GPIO + DA850_UI_EXPANDER_N_GPIOS)
+
+static const char const *baseboard_expander_names[] = {
+	"deep_sleep_en", "sw_rst", "tp_23", "tp_22", "tp_21", "user_pb1",
+	"user_led2", "user_led1", "user_sw_1", "user_sw_2", "user_sw_3",
+	"user_sw_4", "user_sw_5", "user_sw_6", "user_sw_7", "user_sw_8"
+};
+
+#define DA850_DEEP_SLEEP_EN_OFFSET		0
+#define DA850_SW_RST_OFFSET			1
+#define DA850_PB1_OFFSET			5
+#define DA850_USER_LED2_OFFSET			6
+#define DA850_USER_SW_1_OFFSET			8
+
+#define DA850_N_USER_SW				8
+#define DA850_N_USER_LED			2
+
+static struct gpio_keys_button user_pb_gpio_key = {
+	.code = KEY_PROG1,
+	.type = EV_KEY,
+	.active_low = 1,
+	.wakeup = 0,
+	.debounce_interval = DA850_PB_DEBOUNCE_MS,
+	.gpio = -1, /* assigned at runtime */
+	.desc = NULL, /* assigned at runtime */
+};
+
+static struct gpio_keys_platform_data user_pb_gpio_key_platform_data = {
+	.buttons = &user_pb_gpio_key,
+	.nbuttons = 1,
+	.rep = 0, /* disable auto-repeat */
+	.poll_interval = DA850_PB_POLL_MS,
+};
+
+static struct platform_device user_pb_gpio_key_device = {
+	.name = "gpio-keys",
+	.id = 1,
+	.dev = {
+		.platform_data = &user_pb_gpio_key_platform_data
+	}
+};
+
+static struct gpio_keys_button user_sw_gpio_keys[DA850_N_USER_SW];
+
+static struct gpio_keys_platform_data user_sw_gpio_key_platform_data = {
+	.buttons = user_sw_gpio_keys,
+	.nbuttons = ARRAY_SIZE(user_sw_gpio_keys),
+	.rep = 0, /* disable auto-repeat */
+	.poll_interval = DA850_SW_POLL_MS,
+};
+
+static struct platform_device user_sw_gpio_key_device = {
+	.name = "gpio-keys",
+	.id = 2,
+	.dev = {
+		.platform_data = &user_sw_gpio_key_platform_data
+	}
+};
+
+static void da850_user_switches_init(unsigned gpio)
+{
+	int i;
+	struct gpio_keys_button *button;
+
+	for (i = 0; i < DA850_N_USER_SW; i++) {
+		button = &user_sw_gpio_keys[i];
+
+		button->code = SW_LID + i;
+		button->type = EV_SW;
+		button->active_low = 1;
+		button->wakeup = 0;
+		button->debounce_interval = DA850_PB_DEBOUNCE_MS;
+		button->desc = (char *)
+			baseboard_expander_names[DA850_USER_SW_1_OFFSET + i];
+
+		button->gpio = gpio + DA850_USER_SW_1_OFFSET + i;
+	}
+}
+
+static struct gpio_led user_leds[DA850_N_USER_LED];
+
+static struct gpio_led_platform_data user_led_gpio_data = {
+	.leds = user_leds,
+	.num_leds = ARRAY_SIZE(user_leds),
+};
+
+static struct platform_device user_leds_gpio_device = {
+	.name		= "leds-gpio",
+	.id		= -1,
+	.dev = {
+		.platform_data = &user_led_gpio_data
+	}
+};
+
+static void da850_user_leds_init(unsigned gpio)
+{
+	int i;
+	struct gpio_led *led;
+
+	for (i = 0; i < DA850_N_USER_LED; i++) {
+		led = &user_leds[i];
+
+		led->active_low = 1;
+		led->gpio = gpio + DA850_USER_LED2_OFFSET + i;
+		led->name =
+			baseboard_expander_names[DA850_USER_LED2_OFFSET + i];
+	}
+}
+
+static int da850_evm_baseboard_expander_setup(struct i2c_client *client,
+						unsigned gpio, unsigned ngpio,
+						void *c)
+{
+	int ret;
+	int deep_sleep_en, sw_rst;
+
+	deep_sleep_en	= gpio + DA850_DEEP_SLEEP_EN_OFFSET;
+	sw_rst		= gpio + DA850_SW_RST_OFFSET;
+
+	/* Do not allow sysfs control of deep_sleep_en */
+	ret = gpio_request(deep_sleep_en,
+			baseboard_expander_names[DA850_DEEP_SLEEP_EN_OFFSET]);
+	if (ret) {
+		pr_warning("Cannot open IO expander pin %d\n", deep_sleep_en);
+		goto io_exp_setup_deep_sleep_en_fail;
+	}
+	/* do not drive a value on deep_sleep_en */
+	gpio_direction_input(deep_sleep_en);
+
+	/* Do not allow sysfs control of sw_rst */
+	ret = gpio_request(sw_rst,
+			baseboard_expander_names[DA850_SW_RST_OFFSET]);
+	if (ret) {
+		pr_warning("Cannot open IO expander pin %d\n", sw_rst);
+		goto io_exp_setup_sw_rst_fail;
+	}
+	/* do not drive a value on sw_rst */
+	gpio_direction_input(sw_rst);
+
+	/* Register user_pb1 as a gpio-keys button */
+	user_pb_gpio_key.desc = (char *)
+			baseboard_expander_names[DA850_PB1_OFFSET];
+	user_pb_gpio_key.gpio = gpio + DA850_PB1_OFFSET;
+	ret = platform_device_register(&user_pb_gpio_key_device);
+	if (ret) {
+		pr_warning("Cannot register user pb: %d\n", ret);
+		goto io_exp_setup_pb_fail;
+	}
+
+	/*
+	 * Register the switches as a separate gpio-keys device so the fast
+	 * polling interval for the pushbuttons is not wasted on switches
+	 */
+	da850_user_switches_init(gpio);
+	ret = platform_device_register(&user_sw_gpio_key_device);
+	if (ret) {
+		pr_warning("Could not register baseboard GPIO expander switches"
+						" device\n");
+		goto io_exp_setup_sw_fail;
+	}
+
+	da850_user_leds_init(gpio);
+	ret = platform_device_register(&user_leds_gpio_device);
+	if (ret) {
+		pr_warning("Could not register baseboard GPIO expander LEDS "
+				"device\n");
+		goto io_exp_setup_leds_fail;
+	}
+
+	return 0;
+
+io_exp_setup_leds_fail:
+	platform_device_unregister(&user_sw_gpio_key_device);
+io_exp_setup_sw_fail:
+	platform_device_unregister(&user_pb_gpio_key_device);
+io_exp_setup_pb_fail:
+	gpio_free(sw_rst);
+io_exp_setup_sw_rst_fail:
+	gpio_free(deep_sleep_en);
+io_exp_setup_deep_sleep_en_fail:
+	return ret;
+}
+
+static int da850_evm_baseboard_expander_teardown(struct i2c_client *client,
+					unsigned gpio, unsigned ngpio, void *c)
+{
+	int deep_sleep_en, sw_rst;
+
+	deep_sleep_en	= gpio + DA850_DEEP_SLEEP_EN_OFFSET;
+	sw_rst		= gpio + DA850_SW_RST_OFFSET;
+
+	platform_device_unregister(&user_leds_gpio_device);
+	platform_device_unregister(&user_sw_gpio_key_device);
+	platform_device_unregister(&user_pb_gpio_key_device);
+	gpio_free(sw_rst);
+	gpio_free(deep_sleep_en);
+
+	return 0;
+}
+
 static struct pca953x_platform_data da850_evm_ui_expander_info = {
 	.gpio_base	= DAVINCI_N_GPIO,
 	.setup		= da850_evm_ui_expander_setup,
@@ -417,6 +619,13 @@ static struct pca953x_platform_data da850_evm_ui_expander_info = {
 	.names		= ui_expander_names,
 };
 
+static struct pca953x_platform_data da850_evm_baseboard_expander_info = {
+	.gpio_base	= DA850_BB_EXPANDER_GPIO_BASE,
+	.setup		= da850_evm_baseboard_expander_setup,
+	.teardown	= da850_evm_baseboard_expander_teardown,
+	.names		= baseboard_expander_names,
+};
+
 static struct i2c_board_info __initdata da850_evm_i2c_devices[] = {
 	{
 		I2C_BOARD_INFO("tlv320aic3x", 0x18),
@@ -424,10 +633,10 @@ static struct i2c_board_info __initdata da850_evm_i2c_devices[] = {
 	{
 		I2C_BOARD_INFO("tca6416", 0x20),
 		.platform_data = &da850_evm_ui_expander_info,
-		/*
-		 * TODO : populate at runtime using
-		 * .irq = gpio_to_irq(GPIO_TO_PIN(2,7)),
-		 */
+	},
+	{
+		I2C_BOARD_INFO("tca6416", 0x21),
+		.platform_data = &da850_evm_baseboard_expander_info,
 	},
 };
 
