mx6cuboxi: Differentiate Cubox-i and Hummingboard
Introduce is_hummingboard() function that reads GPIOs that can distinguish
between Cubox-i and Hummingboard.
Print the board name accordingly.
Based on a patch from Rabeeh Khoury.
Signed-off-by: Rabeeh Khoury <rabeeh@solid-run.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c
index 59f322a..9123255 100644
--- a/board/solidrun/mx6cuboxi/mx6cuboxi.c
+++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c
@@ -71,6 +71,12 @@
IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};
+static iomux_v3_cfg_t const hb_cbi_sense[] = {
+ /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
+ IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
+ IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
+};
+
static void setup_iomux_uart(void)
{
SETUP_IOMUX_PADS(uart1_pads);
@@ -167,9 +173,42 @@
return 0;
}
+static bool is_hummingboard(void)
+{
+ int val1, val2;
+
+ SETUP_IOMUX_PADS(hb_cbi_sense);
+
+ gpio_direction_input(IMX_GPIO_NR(4, 9));
+ gpio_direction_input(IMX_GPIO_NR(3, 4));
+
+ val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
+ val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
+
+ /*
+ * Machine selection -
+ * Machine val1, val2
+ * -------------------------
+ * HB rev 3.x x 0
+ * CBi 0 1
+ * HB 1 1
+ */
+
+ if (val2 == 0)
+ return true;
+ else if (val1 == 0)
+ return false;
+ else
+ return true;
+}
+
int checkboard(void)
{
- puts("Board: MX6 Hummingboard\n");
+ if (is_hummingboard())
+ puts("Board: MX6 Hummingboard\n");
+ else
+ puts("Board: MX6 Cubox-i\n");
+
return 0;
}