[U-Boot] [PATCH 4/5] mx6cuboxi: Differentiate Cubox-i and Hummingboard

[Stefano Babic <sbabic@denx.de>]

Hi Fabio,

On 23/04/2015 05:57, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> Introduce is_hummingboard() function that reads GPIOs that can distinguish
> between Cubox-i and Hummingboard.
> 
> Print the board name accordingly.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>  board/solidrun/mx6cuboxi/mx6cuboxi.c | 41 +++++++++++++++++++++++++++++++++++-
>  1 file changed, 40 insertions(+), 1 deletion(-)
> 
> diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c
> index 1f240ae..83410b2 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;
>  }
>  
> 

Reviewed-by: Stefano Babic <sbabic@denx.de>

Best regards,
Stefano Babic


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