From: Fabio Estevam Date: Sat, 25 Apr 2015 21:47:19 +0000 (-0300) Subject: mx6cuboxi: Differentiate Cubox-i and Hummingboard X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=feb6cc5cb3bfd2c99e7092ac3ba6adc726ca4100;p=u-boot.git 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 Signed-off-by: Fabio Estevam Reviewed-by: Tom Rini --- diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c index 59f322a990..9123255889 100644 --- a/board/solidrun/mx6cuboxi/mx6cuboxi.c +++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c @@ -71,6 +71,12 @@ static iomux_v3_cfg_t const usdhc2_pads[] = { 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 @@ int board_init(void) 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; }